MARTINDALE'S CALCULATORS ON-LINE CENTER PART I: I-N NAVIGATION - GPS (Calculators, Applets, Spreadsheets, and where Applicable includes: Courses, Manuals, Handbooks, Simulations, Animations, Videos, etc.)

US/Pacific: Friday, May 9, 2008 Sydney, Australia: Saturday, May 10, 2008 File Download Time Calculator Author, E-Mail, Privacy Policy & Disclaimer Currently the Calculators On-Line Center contains over "23,490" Calculators

NAVIGATION - GPS Cartography, Mapping & GIS ~ Distance & Location ~ Doppler Shift ~ GPS Magnetic ~ Mercator ~ Ocean/Sea Navigation ~ Radar, AIS, EW & Lighthouses Satellites & Space ~ TV Dish, Internet, etc. to Satellite Maritime Center Calculators On-Line Center Part I:I-N Calculators On-Line Center Home Page

Cartography, Mapping, GIS FOR DATABASES, COURSES & SIMULATIONS SEE THE GEOSCIENCE CENTER GEOGRAPHICAL NAMES, GEOGRAPHICAL COORDINATES, ETC. World Wide ALEXANDRIA DIGITAL LIBRARY GAZETTEER SERVER - Alexandria Digitial Library Project (ADL), University of California, Santa Barbara VERY VERY VERY...EXTENSIVE. For more information see Research or the Alexandria Digitial Library Project (ADL) GETTY THESAURUS OF GEOGRAPHIC NAMES ON LINE - The J. Paul Getty Trust VERY VERY VERY...EXTENSIVE. For more information see the Conducting Research; Research at Getty or The Getty Australia AUSTRALIA GEOGRAPHIC PLACE NAMES (GAZETEER) - Environment Australia, Department of the Environment & Heritage, Sydney, Australia VERY VERY VERY...EXTENSIVE. For more information see GIS Tools; Australian Maps & Databases or Department of the Environment & Heritage U.S. GEOGRAPHIC NAMES INFORMATION SYSTEMS (GNIS) - U.S. Geological Survery (USGS), Department of the Interior VERY VERY VERY...EXTENSIVE. Geographic Names Information Systems (GNIS) "...Applying the latest technology, the Board on Geographic Names continues its mission. It serves the Federal Government and the public as a central authority to which name problems, name inquiries, name changes, and new name proposals can be directed. In partnership with Federal, State, and local agencies, the Board provides a conduit through which uniform geographic name usage is applied and current names data is promulgated..." For more information see the U.S. Geological Survery GIS CALCULATORS & APPLETS GEOGRAPHIC INFORMATION SYSTEM CALCULATORS & APPLETS GIS TOOLS - CALCULATORS - Bureau of Economic Geology, University of Texas VERY EXTENSIVE. GIS Calculators include: "...Length Conversion Calculator; Area Conversion Calculator; DegMinSec to DecDeg Calculator; DecDeg to DegMinSec Calculator; Scale Calculator Calculator; Degrees to Radians Calculator; Time to GPS Seconds Calculator..." For more information see the Bureau of Economic Geology Some examples from over "7" GIS Calculators include Degrees-Radians/Degrees-Radians Calculator Regular Time to GPS Time Calculator GIS TOOLS - CALCULATORS - Environment Australia, Department of the Environment & Heritage, Sydney, Australia VERY VERY EXTENSIVE. GIS Calculators include: "...Degrees, Minutes and Seconds to Decimal Degrees Calculator; Decimal Degrees to Degrees, Minutes and Seconds Calculator; AMG Coordinates to Geographic Calculator; Geographic Coordinates to AMG Calculator; etc..." For more information see Australian Maps & Databases or Department of the Environment & Heritage Some examples from over "10" GIS Calculators include Albers Coordinates to Geographicals Calculator Geographic Coordinates to Lambert Calculator NGS GEODETIC ONLINE TOOLS - National Geodetic Survey, NOAA VERY VERY VERY...EXTENSIVE. For more information see National Geodetic Survey Some examples from over "23" NGS Geodetic Calculators include Inverse/Forward/Invers3D/Forwrd3D Calculators Inverse/Forward/Invers3D/Forwrd3D Calculators include INVERSE "...is the tool for computing the geodetic azimuth and ellipsoidal distance between two points given their latitudes and longitudes..." FORWARD "...is the tool for computing the geodetic position (latitude and longitude in degrees, minutes, and seconds) of a point given the geodetic position of a beginning point and..." INVERS3D "...is the three dimensional version of program INVERSE, and is..." etc. State Plane Coordinates Calculator State Plane Coordinates Calculator "...provides coordinates on a flat grid for easy computation while maintaining a difference between geodetic and grid distance of one part in 10,000 or better..." Surface Gravity Prediction Calculator in the Conterminous USA Surface Gravity Prediction Calculator in the Conterminous USA "...is designed to predict surface gravity at specified geographic position and topographic height..." Tidal and Orthometric Elevations Calculator: CO-OPS/NGS Elevation Data Tidal and Orthometric Elevations Calculator: CO-OPS/NGS Elevation Data "...tidal information and orthometric elevations of a specific survey control mark can be viewed graphically..." DEGREES <> DECIMAL CALCULATORS & APPLETS CONVERT DECIMAL DEGREES TO DEGREES, MINUTES AND SECONDS AND VICE VERSA - North Carolina Geological Survey (NCGS), Division of Land Resources, North Carolina For more information see Geographic Information Systems (GIS) at the NCGS or the North Carolina Geological Survey (NCGS) MAP SCALE CALCULATORS & APPLETS MAP SCALE CALCULATOR - Bureau of Economic Geology, University of Texas "...Enter the representative fraction of your map..." For more information see GIS Tools Online; Bureau of Economic Geology

MAPS CALCULATORS & APPLETS MAPPING CALCULATORS & APPLETS PLANIGLOBE - M. Weinelt, S. Körsgen & R. Kantz, kk+w - digitale kartografie GmbH, Bundesrepublik Deutschland (Germany) VERY VERY VERY...EXTENSIVE & VERY FAST. With Planiglobe "...you may generate maps interactively at planiglobe. Zoom in and out, search for places and add your own locations to a map...These formats are vector based graphic formats which overcome resolution limitations usually found with JPEG or GIF formats. You can select and edit single objects or groups of lines, points or polygons and change graphic attributes such as size and color..." GAZZA'S INTERACTIVE MAPS - G. Nicholson, New Zealand VERY VERY VERY...EXTENSIVE. For more information see Gary Nicholson's Home Page Some examples of Interactive Maps include The World: World Journey Planner Mediterranean Sea Planner Map New Zealand Journey Planner Map DESIGN YOUR OWN MAP (MAP MAKER) - Map Maker Ltd., Developed by: Tony Steinke, Argyll, Scotland VERY VERY EXTENSIVE. Design Your Own Map - MAP MAKER "...The foundation of the system is the free GIS, Map Maker Gratis. If your mapping needs are basic simply use Map Maker Gratis for free. Map Maker Gratis and Map Maker Pro are in one program, so at any time you can unlock the power of Map Maker Pro by buying and entering a licence number..." GMT-3: THE GENERIC MAPPING TOOLS - Developed and Maintained by: P. Wessel & W.H.F. Smith, Department of Geology and Geophysics, School of Ocean and Earth Science and Technology (SOEST), University of Hawai'i at Manoa VERY VERY VERY...EXTENSIVE & VERY FAST. Generic Mapping Tools (GMT) "...is an open source collection of ~60 tools for manipulating geographic and Cartesian data sets (including filtering, trend fitting, gridding, projecting, etc.) and producing Encapsulated PostScript File (EPS) illustrations ranging from simple x-y plots via contour maps to artificially illuminated surfaces and 3-D perspective views. GMT supports ~30 map projections and transformations and comes with support data such as GSHHS coastlines, rivers, and political boundaries..." For more information see Pål (Paul) Wessel's Home Page Distance & Location GEOGRAPHICAL LOCATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS COORDINATE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS DISTANCE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS LOCATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS GREAT CIRCLE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS GEOGRAPHIC MIDPOINT CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS GEOGRAPHIC MIDPOINT CALCULATOR WITH MAPS - Dean Schmidt VERY VERY VERY...EXTENSIVE. Available in English & Spanish/Español. Geographic Midpoint Calculator "...The geographic midpoint for any two cities is located halfway along the great circle route, which is the shortest route that runs between both cities..." Geographic Midpoint Calculator with Maps "...allows you to find the geographic midpoint (geographic center or average location) for two or more places..." "...The calculator provides you over 3000 world cities to choose from...or as an alternative you can specify a latitude and longitude for any location..." RANDOM POINT GENERATOR WITH MAPS - Dean Schmidt VERY VERY VERY...EXTENSIVE. Available in English & Spanish/Español. Random Point Generator With Maps "...generates one or more points at random locations on the surface of the earth. The points can be viewed on a Google map..." Random Point Generator With Maps is "...a fast, easy to use GIS tool, ideal for generating random points for random sampling within circular or rectangular regions. There are many applications that use random sampling: zoology, forestry, geology, soils, agriculture, remote sensing, meteorology, demography and surveys just to name a few. The generated random points can be copied and pasted into a spreadsheet or other application..." For more information see GeoMidpoint CALCULATOR FOR DISTANCES BETWEEN GEOGRAPHICAL LOCATIONS - L. Bogan, Department of Physics, Arcadia University, Nova Scotia, Canada VERY VERY EXTENSIVE. Distance between Geographical Locations Calculators include: Distances between Three Locations Calculator "...Enter the Latitudes and Longitudes of the three points in degrees, minutes and seconds of arc..." Location from Distance and Bearing Calculator "...Enter the Latitude and Longitude of the starting point, the distance (km) and bearing (degrees E of North) to another point..." For more information see Larry Bogan's Home Page DISTANCE AND AZIMUTHS BETWEEN 2 SETS OF COORDINATES CALCULATOR - D. Bickel, Audio Services Division, Mass Media Bureau, Federal Communications Commission (FCC) VERY EXTENSIVE. Distance and Azimuths Between 2 Sets of Coordinates Calculator "...will calculate the distance and azimuth (referenced to True North) between two sets of coordinates on the earth. Bearings or azimuths start with 0 degrees toward true north, 90 degrees east, 180 degrees south, and 270 degrees west (clockwise rotation)..." For more information see Radio Tools or the Audio Services Division GAZZA'S INTERSECTIONS CALCULATOR FOR GREAT CIRCLE ROUTES - G. Nicholson, New Zealand VERY VERY EXTENSIVE. Great Circle Routs Calculator "...Calculate the distance and bearing between any two points given their latitude and longitude, or calculate the position of a second point given the range and bearing from the first. Also allows you to calculate the intersection point of two lines. This calculator assumes that the earth is a spheroid (round) and that 1 degree of arc is equal to 60 nautical miles..." For more information see Calculators or Gary Nicholson's Home Page GREAT CIRCLE MAPPER - K.L. Swartz VERY VERY EXTENSIVE. Great Circle Mapper "...displays a map depicting the great circle path between locations and computes the distance along that path. It can also display the area which is within a given range of a location....A great circle path is the shortest path on the surface of a sphere between two points on that sphere. Technically, the term geodesic path should be used in this page since Earth is not a true sphere, but the great circle terminology is common usage...." For more information see Karl Swartz's Home Page GREAT CIRCLE DISTANCE CALCULATOR AND SWELL ARRIVAL CALCULATOR - StormSurf VERY VERY EXTENSIVE. Great Circle Distance Calculator & Swell Arrival Calculator "...calculates the Great Circle distance between any two points on the planet (in nautical miles) or determine how long it will take a swell to travel to your beach..." For more information see Surf Forecast Tutorials or StormSurf GREAT CIRCLE DISTANCE CALCULATOR - J. Owen, Wirral Peninsula, County of Merseyside, U.K.. VERY EXTENSIVE. For more information see the Amateur Radio & Audio JavaScript Collection; Amateur Radio & Electronics or John Owen's Home Page GREAT CIRCLE CALCULATOR - E. Williams VERY EXTENSIVE. Great Circle Calculator "...computes true course and distance between points..." For more information see Ed Williams Airport Page GREAT CIRCLE DISTANCES (JAVA APPLET) - P. Kirby VERY EXTENSIVE. For more information see Vector Land HOW FAR IS IT? - Darrel Kindred How Far is It? "...This service uses the University of Michigan Geographic Name Server to find the latitude and longitude of two places, and then calculates the distance between them (as the crow flies). It also provides a map showing the two places, using the Xerox PARC Map Server..." SHORTEST DISTANCE BETWEEN TWO POINTS ON EARTH - H. Ronsmans, Belgium Shortest distance between two points on Earth Calculator "...computes and describes the shortest distance between any two points on this ellipsoid of revolution..." For more information see Herwig Ronsmans' Home Page TIME AND DISTANCE CALCULATOR - AR Group, Inc. Time and Distance Calculator "...The information received is only the great circle distance and should only be used as a guide..." For more information see Air Routing International or AR Group, Inc.

GRID CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS FIND OUT WHERE YOU ARE! - Alun Jones, Institute of Biological Sciences, University of Wales, U.K. VERY EXTENSIVE. Find out where you are! "...Just fill in the form with your location. You can fill this in using lat/long, NGR or QRA locator and it will convert between them. I t's reasonably clever at spotting just what you typed in..." For more information see Da Penguin's Radio Page GRID SQUARE CALCULATOR - American Radio Relay League, Inc., Newington, CT VERY EXTENSIVE. Grid Square Calculator "...enter those values into the "degrees" fields and leave the "minutes" and "seconds" fields blank. If you know your latitude and longitude in degrees, minutes and seconds, enter the values into the appropriate fields. (Don't enter both decimal degrees and minutes/seconds!)..." For more information see Grid Info; ARRL Web Location Services or the American Radio Relay League (ARRL) Examples or other ARRL Calculators include ARRL Locator: Location by City and State ARRL Locator: Location by City and State "...This form lets you find the county, ARRL section, ARRL division, grid square and latitude/longitude of a location (city and state) in the US..." ASIA-PACIFIC DISTANCE CALCULATORS & APPLETS ASIA-PACIFIC DISTANCE CALCULATOR - School of Hawaiian, Asian and Pacific Studies, University of Hawaii VERY EXTENSIVE. For more information see the School of Hawaiian, Asian and Pacific Studies MEXICO DISTANCE CALCULATORS & APPLETS DRIVING DISTANCES IN MEXICO: INTERACTIVE - Virtual Mexico.com VERY EXTENSIVE. Driving Distance in Mexico "...Click on any two city names with red dots to see the driving distance between the two cities..." For more information see Virtual Mexico U.S. DISTANCE CALCULATORS & APPLETS CITY DISTANCE CALCULATOR: U.S. - Geobytes VERY EXTENSIVE. City Distance Calculator "...service is provided for FREE by Geobytes, inc to assist you in determining the distance between two cities..." For more information see Geobytes RAILROAD MILEAGE CALCULATOR: U.S. - Union Pacific VERY EXTENSIVE. For more information see Union Pacific Doppler Shift DOPPLER SHIFT CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS DOPPLER SHIFT CALCULATOR (JAVA APPLET) - PEW's Corner, Denmarki Doppler Shift Calculator INPUT Values include: "...Transducer Velocity; Receiver Velocity; Wave Velocity..." For more information see PEW's Corner RELATIVISTIC DOPPLER EFFECT CALCULATOR - C.R. Nave, Department of Physics & Astronomy, College of Arts & Sciences, Georgia State University VERY EXTENSIVE. Relativistic Doppler Effect Calculator INPUT Values include: "...Relative VelocitySource; Relative VelocityObserved; etc..." For more information see Relativistic Doppler Effect; HyperPhysics; Carl Rod Nave's Home Page; Department of Physics & Astronomy or Georgia State University DOPPLER EFFECT (JAVA APPLET) - J.M. Pearce & W. Christian, Department of Physics, Davidson College, North Carolina For more information see For more information see Physlets; WebPhysics or the Department of Physics

GPS Navigation GPS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS NGS GEODETIC ONLINE TOOLS - National Geodetic Survey, NOAA VERY VERY VERY...EXTENSIVE. For more information see National Geodetic Survey Some examples from over "23" NGS Geodetic Calculators include Inverse/Forward/Invers3D/Forwrd3D Calculators Inverse/Forward/Invers3D/Forwrd3D Calculators include INVERSE "...is the tool for computing the geodetic azimuth and ellipsoidal distance between two points given their latitudes and longitudes..." FORWARD "...is the tool for computing the geodetic position (latitude and longitude in degrees, minutes, and seconds) of a point given the geodetic position of a beginning point and..." INVERS3D "...is the three dimensional version of program INVERSE, and is..." etc. State Plane Coordinates Calculator State Plane Coordinates Calculator "...provides coordinates on a flat grid for easy computation while maintaining a difference between geodetic and grid distance of one part in 10,000 or better..." Surface Gravity Prediction Calculator in the Conterminous USA Surface Gravity Prediction Calculator in the Conterminous USA "...is designed to predict surface gravity at specified geographic position and topographic height..." Tidal and Orthometric Elevations Calculator: CO-OPS/NGS Elevation Data Tidal and Orthometric Elevations Calculator: CO-OPS/NGS Elevation Data "...tidal information and orthometric elevations of a specific survey control mark can be viewed graphically..." Magnetic MAGNETIC FIELD CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS GEOMAGNETIC CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS COMPUTE VALUES OF EARTH'S MAGNETIC FIELD - National Geophysical Data Center (NGDC), NOAA VERY VERY VERY...EXTENSIVE. Earth's Magnetic Field Values Calculators include: "...Estimated Value of Magnetic Declination Calculator; Magnetic Field Calculator (Geomagnetic Online Calculator); U.S. Historic Declination Calculator; Estimated Values of Magnetic Field Properties Calculator..." For more information see Geomagnetism or the National Geophysical Data Center (NGDC) CORRECTED GEOMAGNETIC COORDINATES - Space Physics Data Facility (SPDF), Goddard Space Flight Center, NASA VERY VERY EXTENSIVE. IGRF/DGRF Model Parameters and Corrected Geomagnetic Coordinates Calculator "...enables computation of a set of the main geomagnetic field model parameters and transformation from the GEOcentric spherical (geographic) coordinates to the Corrected GeoMagnetic (CGM) coordinates and vice versa..." For more information see Space Physics Data Facility (SPDF) or the Goddard Space Flight Center GEOMAGNETISM REAL-TIME DATA - Geology Division, United States Geological Survey (USGS) Multimedia Geomagnetism Database (Text & Images). VERY VERY VERY...EXTENSIVE. Geomagnetism Real-Time Data "...plots for today and the previous seven days are available..." For more information see the Geology Divisions or the United States Geological Survey GEOMAGNETIC FIELD CALCULATOR - E. Williams VERY EXTENSIVE. Geomagnetic Field Calculator "...computes the earth's magnetic field based on various standard spherical harmonic fits..." For more information see Ed Williams Airport Page MAGNETIC FIELD CALCULATOR - L. Newitt, Canadian National Geomagnetism Program, Geological Survey of Canada, Ottawa, Ontario, Canada VERY VERY EXTENSIVE. Magnetic Field Calculator "...may be used to calculate values of all seven magnetic components: D, I, H, Z, F, X, Y. The Canadian Geomagnetic Reference Field is used to compute values within Canada and adjacent area...Magnetic reference field models give results that are typically accurate to about 150 nT, but the difference between the model value and the true value of the magnetic field at a given location is dependent on a number of factors..." For more information see Canadian National Geomagnetism Program MAGNETIC FIELD CALCULATOR (JAVA APPLET) - Enertech Consultants VERY EXTENSIVE. Magnetic Field Calculator "...calculates lateral profiles of the magnetic field for a system of user-defined conductors. The program is based on Ampere's Law and assumes straight conductors parallel to a flat earth..." For more information see Enertech Consultants THE IGRF APPLET - K. Korhonen, Finnish Meteorological Institute, Helsinki, Finland VERY EXTENSIVE. IGRF Applet "...contains a graphical user interface (GUI) that enables the user to select the desired parameters for map plotting and geomagnetic field calculation..." For more information see Geomagnetism; FMI/geomagnetism or the Finnish Meteorological Institute LINEAR INVERSION CALCULATORS & APPLETS LINEAR INVERSION (JAVA APPLET) - Geophysical Inversion Facility, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, B.C., Canada VERY EXTENSIVE. Geophysical inversion "...can been described as a process used to find a distribution of a physical property that caused a set of physical measurements recorded in a field survey..." Linear Inversion Calculator INPUT Values include: "...Enter values for Kernels, Noise & Alpha; Click on either L-curve, Chifact, GCV or Beta..." For more information see Seeing the Earth's Subsurface or the Geophysical Inversion Facility MAGNETIC DECLINATION CALCULATORS & APPLETS MAGNETIC DECLINATION CALCULATOR (MIRP) - L. Newitt, Canadian National Geomagnetism Program, Geological Survey of Canada, Ottawa, Ontario, Canada VERY VERY EXTENSIVE. The Magnetic Information Retrieval Program (MIRP) "...uses the CGRF to calculate values of magnetic declination..." For more information see Canadian National Geomagnetism Program MAGNETIC DIPOLE CALCULATORS & APPLETS MAGNETIC DIPOLE MODELLING APPLET - Geophysical Inversion Facility, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, B.C., Canada Magnetic Dipole Modeling Applet's "...objective is to learn about the magnetic field observed at the ground's surface, caused by a small buried dipolar magnet. In geophysics, this simulates the observed anomaly over a buried susceptible sphere that is magnetized by the Earth's magnetic field..." For more information see Seeing the Earth's Subsurface or the Geophysical Inversion Facility Mercator MERCATOR CALCULATORS & APPLETS GAZZA'S GEODETICS CALCULATOR FOR TRANSVERSE MERCATOR PROJECTIONS - G. Nicholson, New Zealand VERY VERY EXTENSIVE. Geodetics Calculator For Transverse Mercator Projections "...Calculate the distance and bearing between two points on ellipsoid; Calculate the coordinates of a point on the ellipsoid given the distance and bearing from a known point; Calculate the distance and bearing between two points the plane; Calculate the coordinates of a point on the plane given the distance and bearing from a known point; Convert between Latitude and Longitude and any Transverse Mercator projection; etc..." For more information see Calculators or Gary Nicholson'sHome Page TRANSVERSE MERCATOR CALCULATOR - A. Morton, Blackthorn Cottage, Berkshire, U.K. VERY EXTENSIVE. Transverse Mercator Calculator converts "...latitude/longitude co-ordinates to co-ordinates in metres on a Transverse Mercator projection..." "...An Excel Workbook is also available on this page to carry out bulk conversions..." For more information see DMAP UNIVERSAL TRANSVERSE MERCATOR COORDINATES - National Geodetic Survey, NOAA VERY VERY EXTENSIVE. Universal Transverse Mercator Coordinate (UTM) system "...provides coordinates on a world wide flat grid for easy computation...divides the World into 60 zones, each being 6 degrees longitude wide..." For more information see Tools or the National Geodetic Survey

Marine Navigation, Ocean Navigation, Sea Navigation MARINE NAVIGATION RELATED CENTERS FOR NAVIGATION BY THE STARS IN REAL-TIME SEE ASTROPHYSICS: SKY CHARTS IN REAL TIME NAVIGATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS MARINE NAVIGATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS OCEAN NAVIGATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SEA NAVIGATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS DATALOY DISTANCE TABLE: PORTS DISTANCE & VOYAGE TIME CALCULATOR - Datalay VERY VERY VERY...EXTENSIVE. Dataloy Distance Table: Ports Distance & Voyage Time Calculator includes "...5300 Ports/Maritime Locations; 23000 Waypoints; 150000 Logical Relations Between Waypoints; 11000 Geographical References including: Capes, Lighthouses, Reefs, Islands, etc..." GAZZA'S NAVIGATION CALCULATORS - G. Nicholson, New Zealand VERY VERY VERY...EXTENSIVE. For more information see Gary Nicholson's Home Page Some examples from over "5" Navigation Calculators include Datum Shift Calculator For Transverse Mercator Projections Datum Shift Calculator For Transverse Mercator Projections "...Perform three or seven parameter Datum Shifts using either rotation model. Also includes conversions to Transverse Mercator Projections to make it easier when input and output coordinates are in Northings and Eastingsd..." Geodetics Calculator For Transverse Mercator Projections Geodetics Calculator For Transverse Mercator Projections "...Calculate the distance and bearing between two points on ellipsoid; Calculate the coordinates of a point on the ellipsoid given the distance and bearing from a known point; Calculate the distance and bearing between two points the plane; Calculate the coordinates of a point on the plane given the distance and bearing from a known point; Convert between Latitude and Longitude and any Transverse Mercator projection; etc..." MERIDONAL PARTS CALCULATOR (JAVASCRIPT) - J. Wong, Marine Officer, Marine Department, Hong Kong For more information see Calculators; Jacky Wong's Home Page or the Marine Department Examples of other Navigation Calculators include Mercator Sailing Problem - Calculator Great Circle Sailing Problem - Calculator General Sight Reduction - Calculator Sun's Information and Sight Reduction - Calculator MARINER MATH: NAVIGATION MATH FOR MARINERS - Dan Ritchie VERY VERY VERY...EXTENSIVE. Navigation Calculators provide "...automated solutions to some common navigation problems that mariners deal with when cruising and in pre-cruise planning. Solving these problems normally requires the use of a calculator, maneuvering board, parallel rules, drafting compass,..." Examples of Navigation Calculator Subject Categories & Calculators include Convert Bearings Calculators "...Convert Relative Bearing to True or Magnetic Calculator; True-Magnetic-Compass Calculator..." Fuel Planning Calculator; Current Sailing Calculators "...Solve for SOA and Track Calculator; Solve for Drift and Set Calculator; Solve for STW and Course Calculator; etc..." Vertical Clearance Calculators "...Bridge Clearance Calculator - Overhead Clearance Calculator; Depth Calculator; Scope and Rode Calculator..." Radar Solution Calculator; etc, MARINE NAVIGATION CALCULATORS - Maritime Safety Information, National Geospatial Intelligence Agency VERY VERY VERY...EXTENSIVE. Marine Navigation Calculators include: Celestial Navigation Calculators Altitude Correction for Atmospheric Pressure Calculator; Altitude Factors & Change of Altitude Calculator; Compass Error from Amplitudes Observed on the Celestial Horizon Calculator; Latitude and Longitude Factors Calculator; etc. Distance Calculators Distance of an Object by Two Bearings Calculator; Dip of Sea Short of the Horizon Calculator; Meridional Parts Calculator; Length of a Degree of Latitude and Longitude Calculator; etc. Weather Data Calculators Correction of Barometer Reading for Temperature Calculator; Barometer Measurement Conversions Calculator; Direction and Speed of True Wind Calculator; Relative Humidity and Dew Point Calculator; Correction of Barometer Reading for Gravity Calculator; etc. For more information see the National Geospatial Intelligence Agency Some examples from over "40" Navigation Calculators include Log and Trig Calculator Log and Trig Calculator "...will calculate logarithms, trigonometric functions, and the logarithms of trigonometric functions..." Meridional Parts Calculator Meridional Parts Calculator "...allows calculation of the meridional parts used in the construction of Mercator charts and in Mercator sailing for each minute of latitude from the equator to the poles..." Traverse Table Calculator Traverse Table Calculator "...allows calculation of the data in the Traverse table. Enter known data in the appropriate fields..." PHYSICAL OCEANOGRAPHIC REAL-TIME SYSTEMS FOR PORTS PHYSICAL OCEANOGRAPHIC REAL-TIME SYSTEMS - Center for Operational Oceanographic Products and Services, National Ocean Service, NOAA VERY VERY VERY...EXTENSIVE. The Physical Oceanographic Real-Time System "...is a decision support tool that improves the safety and efficiency of maritime commerce and coastal resource management through the integration of real-time environmental observations, forecasts and other geospatial information. PORTS measures and disseminates observations and predictions of water levels, currents, salinity, and meteorological parameters (e.g., winds, atmospheric pressure, air and water temperatures) that mariners need to navigate safely..." "...Measures and disseminates observations and predictions of Water Levels, Currents, Salinity, and Meteorological Parameters (Winds, Atmospheric Pressure, Air and Water Temperatures) that mariners need to navigate safely..." For more information see Products; Center for Operational Oceanographic Products and Services or the NOAA'S National Ocean Service Examples include Chesapeake Bay Chesapeake Bay includes Northern Chesapeake Bay "...Annapolis; Baltimore; Chesapeake Bay Bridge; Potomac River Mid-channel; Solomons Island; Washington DC; etc..." Southern Chesapeake Bay "...Cape Henry; Chesapeake Light Tower; Dominion Terminal; Naval Station Norfolk; Newport News Channel; etc..." Delaware River and Bay Delaware River and Bay includes "...Brown Shoal; Cape May; Delaware City; Philadelphia; etc..." Houston/Galveston Houston & Galveston include: "...Morgans Point; Eagle Point; Pier 21; etc..." Los Angeles & Long Beach Los Angeles & Long Beach include "...Angels Gate; Berth 161; Los Angeles-Berth 60; Pier 400; etc..." New York & New Jersey New York & New Jersey include "...Bayonne Bridge; Bergen Point; Kings Point; etc..." Port of Anchorage Port of Anchorage includes "...Anchorage & Nikiski..." San Francisco Bay San Francisco Bay includes "...Alameda; Benicia Bridge; Oakland; Redwood City; Richmond; etc..." Soo Locks Soo Locks include "...Detour Village; Little Rapids; Lookout 4; Point Iroquois; Rock Cut; SouthWest Pier/Upper; etc..."

Electronic Warfare, Radar & AIS Systems

Lighthouses ~ Automatic Identification System Electronic Warfare & Radar Systems Courses, Glossaries, etc. with Calculators & Applets Airborne Radar Courses & Teaching Modules with Calculators & Applets Radar Antennas ~ Radar Beamwidth ~ Radar Boundary-Relative Speed Radar 'Free-Space Range' ~ Radar Horizon ~ Radar Probability of Intercept Radar Targets & Ship Movements

Radar, Lighthouses, EW & AIS Systems LIGHTHOUSE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS LIGHTHOUSE CALCULATOR - Sailing U.S.A., Sailingusa.info Lighthouse Calculator "...The lantern's light, even if constant, may flash on and off as the sailboat rises and descends upon the waves. The point where the lantern's light is first observed, or it is observed flashing, is used to determine the boat's position..." Lighthouse Calculator INPUT Values include: "...Height in feet above tide level of the lighthouse; Observer's eye level in height in feet above the water..." For more information see the Sailing U.S.A. THE LIGHTHOUSE DIRECTORY - R. Rowlett, Center for Mathematics and Science Education, University of North Carolina, Chapel Hill, NC VERY VERY VERY...EXTENSIVE. Lighthouse Directory "...is a tool for research and study concerning lighthouses and efforts to preserve those lighthouses...provides information and links for more than 9400 of the world's lighthouses..." For more information see Russ Rowlett's Home Page or the Center for Mathematics and Science Education AUTOMATIC IDENTIFICATION SYSTEM CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS AIS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS AUTOMATIC IDENTIFICATION SYSTEM (AIS) CALCALC TO DETERMINE THE MESSAGE CAPACITY OF AN AIS BASESTATION - I. Harre, Bremen, Germany VERY VERY EXTENSIVE. Automatic Identification System "...how many mobile and stationary AIS systems can be received by a single shore-based 'physical AIS base station'. AIS CapCalc will provide the answer for user-defined traffic scenarios..." Automatic Identification System Calculator INPUT Values include: "...Basestation(s); Ship at anchor or moored and not moving faster than 3 knots; Ship at anchor or moored and moving faster than 3 knots; Ship 0-14 knots; Ship 0-14 knots and changing course; Ship 14-23 knots; Ship 14-23 knots and changing course; etc..." For more information see AIS (Automatic Identification System) or Ingo Harre's Home Page ELECTRONIC WARFARE CALCULATORS & APPLETS ELECTRONIC WARFARE & RADAR SYSTEMS COURSES, GLOSSARIES SPACE & ELECTRONIC WARFARE GLOSSARY - Joe Cyr VERY VERY EXTENSIVE. Space & Electronic Warfare contains Acronyms, Abbreviations and Terms relating to the Military; Space & Electronic Combat; Electronic Warfare; Command & Control; Weaponry; General Warfare; Information Warfare; Special Operations; Non-lethal Weapons; Computers; Homeland Security..." For more information see Space & Electronic Warfare Lexicon ELECTRONIC WARFARE ONLINE INTERACTIVE CALCULATORS - Directorate of Science & Technology, Green Bay Professional Packet Radio (GBPPR) VERY VERY EXTENSIVE. For more information see Homebrew Military & Espionage Electronics or the Green Bay Professional Packet Radio (GBPPR) Some examples from over "7" Electronic Warfare Calculators include Minimum Jammer Power Calculator Minimum Jammer Power Calculator INPUT Values include: "...Power Output of the Enemy Transmitter; Elevation of the Enemy Transmitter Location; Enemy Transmitter Location-to-Target Receiver Location Distance Elevation of the Jammer Transmitter Location; Jammer Location-to-Target Receiver Location Distance; Terrain and Ground Conductivity Factor..." Urban Area Path Loss Calculator Urban Area Path Loss Calculator INPUT Values include: "...Frequency of the Transmitter; Power Output of the Transmitter; Height of the Transmitter Location; Height of the Receive Transmitter Location; Distance Between the Transmitter & Receiver Locations; Environment Type..." AIRBORNE RADAR COURSES & TEACHING MODULES WITH CALCULATORS & APPLETS RADAR CALCULATOR - RADAR CALCULATORS INTRODUCTION TO AIRBORNE RADAR: RADAR PROBLEMS, SOLUTIONS AND PROGRAMS - Authors: P. Wittenberg, T. Jeffrey, P. Lacomme, J. Jie, Z. Shengyun, Y. Zhang, W. Zhiyou & W. Xianhui Multimedia Introduction to Airborne Radar Textbook (Text, Images & Calculators). VERY VERY VERY...EXTENSIVE. Introduction to Airborne Radar Textbook Chapters include: "...Radio Waves and Alternating Current Signals; The Ubiquitous Decibel; Choice of Radio Frequency; Pulsed Operation; The Radar Range Equation; Pulse Compression; The Doppler Effect; Sources & Spectra of Ground Return; etc..." Radar Calculators include: "...Antenna Arrays Calculator INPUT Values include: "...Phase shift (degrees) between elements; Number of elements; Antenna output (dB) relative to peak..." Array Pointing Calculator INPUT Values include: "...Radio frequency; Wavelength; Element spacing; Angle off antenna normal to target; Phase shift (degrees) between elements; Number of elements; etc..." Antenna Patterns Calculator INPUT Values include: "...Radio frequency; Wavelength; Element spacing; Start angle for plot; End angle for plot; etc..." Radar Range, Time, Frequency Calculator INPUT Values include: "...Target Range, Unambiguous Range or Range Bin Width; Pulse Width, Target Two Way Travel Time or Pulse Repetition Frequency; etc..." Phasor Addition Calculator; dB Calculator; Horizon Calculator; etc..." RADAR ANTENNA CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS RADAR ANTENNA CALCULATOR (ANTCALC) - I. Harre, Bremen, Germany VERY EXTENSIVE. Radar Antenna Calculator "..."How does a particular radar antenna perform"? The Radar Antenna Calculator provided on this page helps to find answers..." Radar Antenna Calculator INPUT Values include: "...Radar Frequency; Antenna Width; Horizontal Beamwidth; Vertical Beamwidth; Antenna Gain; etc..." Also includes a table that "...shows some data representative for radar antennas used aboard ships or ashore..." For more information see Radar or Ingo Harre's Home Page RADAR BEAMWIDTH CALCULATORS & APPLETS RADAR BEAM PROPERTY CALCULATOR & APPLETS BEAMWIDTH CALCULATOR - BEAM PROPERTY CALCULATOR - Warning Decision Training Branch (WDTB), National Weather Service (NWS), NOAA VERY EXTENSIVE. Beamwidth Calculator "...When analyzing radar data, it is often helpful to know the height of the radar volume...This applet provides a simpler way to get this information. In addition to providing the user the beam center height, it also provides the beam top height, beam bottom height, and the beam width..." Beamwidth Calculator (Beam Property Calculator) INPUT Values include: "...Elevation Angle; Range; Units (English or Metric)..." For more information see Resources or the Warning Decision Training Branch RADAR BOUNDARY-RELATIVE SPEED CALCULATORS & APPLETS BOUNDARY-RELATIVE SPEED CALCULATOR - Warning Decision Training Branch (WDTB), National Weather Service (NWS), NOAA VERY EXTENSIVE. Boundary-Relative Speed Calculator "...was created to give forecasters an easy way to use the proposed schematic diagram in an operational environment..." Boundary-Relative Speed Calculator "...uses three input variables (cell speed, cell direction, and boundary speed; all speeds in m s-1) to compute the boundary-relative velocity at points all along the circular boundary..." For more information see Resources or the Warning Decision Training Branch RADAR 'FREE-SPACE RANGE' CALCULATORS & SPREADSHEETS (XLS) RADAR FREE-SPACE RANGE CALCULATOR (SPREADSHEET OPENS ONLINE WITH EXCEL, iWORK-NUMBERS, IBM LOTUS SYMPHONY, NEOOFFICE, OPENOFFICE CALC, ETC.) - I. Harre, Bremen, Germany VERY VERY EXTENSIVE. Radar Free-Space Range Calculator "...The free-space range of a radar system is the maximum range determined from the parameters of a radar system (antenna and transmitter/receiver combination)..." Radar Free-Space Range Calculator INPUT Values include: Radar Antenna "...Beamwidth (Azimuth & Elevation); Polarisation; Gain; RPM; etc..." Radar Transmitter/Receiver "...Frequency; Wavelength; Peak Power; Pulse Width; etc..." Target "...Radar Cross Section; False Alarm Rate Exponent; etc..." Also includes "...Radar Cross Section (Ship RCS Tables, IALA RCS Tables, etc.); NAVGEN Algorithm to determine 2D Position Fixing Errors; etc..." For more information see Radar or Ingo Harre's Home Page RADAR HORIZON CALCULATORS & APPLETS RADAR HORIZON CALCULATOR (HORCALC) - I. Harre, Bremen, Germany VERY EXTENSIVE. Radar Horizon Calculator is "...a calculator to determine the radar horizon and the target visibility range..." Radar Horizon Calculator INPUT Values include: "...Height of radar antenna; Target height..." For more information see Radar or Ingo Harre's Home Page RADAR PROBABILITY OF INTERCEPT CALCULATORS & APPLETS RADAR PROBABILITY OF INTERCEPT (JAVA APPLET) - V. Clarkson, School of Information Technology & Electrical Engineering, University of Queensland, Queensland, Australia VERY EXTENSIVE. Radar Probability of Intercept "...The plot shows probability of intercept (PoI) between a radar scan pattern and a receiver search sequence..." For more information see Vaughan Clarkson's Home Page or the School of Information Technology & Electrical Engineering RADAR TARGETS AND SHIP MOVEMENTS CALCULATORS & APPLETS RADAR (JAVA APPLET) - C.G. Crawford, Mathematics Department, United States Naval Academy (USNA) VERY EXTENSIVE. Radar Calculator "...Suppose a target is moving back and forth, toward and away from your radar unit. The given function represents the distance as a function of time as measured by your radar..." For more information see Web Based Calculus Applications; Mathematics Department or the United States Naval Academy RELATED RATES (JAVA APPLET) - C.G. Crawford, Mathematics Department, United States Naval Academy (USNA) VERY EXTENSIVE. Related Rates Calculator "...simulates the movement of two ships, one East/West and the other North/South. A separate graph keeps track of the distance between them as a function of time..." For more information see Web Based Calculus Applications; Mathematics Department or the United States Naval Academy

Satellite & Space Navigation SATELLITE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SPACECRAFT TRACKING CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SPACE NAVIGATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS NASA REAL TIME ORBITAL TRACKING DATA - NASA VERY VERY VERY...EXTENSIVE. Tracking Applications include Live 2D Java Satellite Tracking Maps "...is a great way to locate Hubble Space Telescope, Chandra X-Ray Observatory or any of your favorite satellites other than International Space Station or Space Shuttle..." Human Space Flight's Tracking Map is "...a part of the Human Space Flight web site, shows the position of the International Space Station and, when it is flying, the Space Shuttle..." Live 3D Java Tracking Display "...Did you know there are over eight thousand artificial objects orbiting Earth? Over 2,500 are satellites, operative and inoperative. The remaining objects are orbital debris: parts such as nosecone shrouds, lens, hatch covers, rocket bodies, payloads that have disintegrated or exploded, and even objects that "escape" from manned spacecraft during operations..." Predictions for Viewing Space Station, or Other Satellites; etc..." For more information see NASA SATELLITE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS - ALL INCLUSIVE ONLINE SATELLITE CALCULATIONS - J.T. Satre VERY VERY VERY...EXTENSIVE. Some examples from over "30" Satellite Calculators include Noise Figure - Temperature Calculator Noise Figure - Temperature Calculator INPUT Values include: Enter either "...Noise Figure or Noise Temperature..." DVB Downlink Budget Calculator DVB Downlink Budget Calculator INPUT Values include: "...Satellite; Satellite Position; Uplink Carrier to noise; Satellite txp. Carrier to co-channel interference; Location; etc..." IF Frequency Calculator IF Frequency Calculator INPUT Values include: "...RX Frequency; Reciver Minimum Frequency; Reciver Maximum Frequency..." Sun Position Autoupdate Calculator Sun Position Autoupdate Calculator INPUT Values include: "...Site Location; Site Latitude; Site Longitude; etc..." ANTENNA POINTING CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS ANTENNA POINTING CALCULATOR - Spacecom Systems VERY EXTENSIVE. Antenna Pointing Calculator INPUT Values include: "...Select a Satellite; Select a City closest to your location..." For more information see Dish Alignment; Customer Tools or Spacecom Systems CIRCULAR ORBIT CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS CIRCULAR ORBIT SATELLITE DATA CALCULATOR - J. Owen, Wirral Peninsula, County of Merseyside, U.K. Circular Orbit Satellite INPUT Values include: "...Height..." Circular Orbit Satellite OUTPUT values include: "...Period (The time taken by the satellite to complete one orbit); Half-angle of Visibility; Maximum Slant Height; Maximum Slant Range; Satellite Velocity; etc...." For more information see the Amateur Radio & Audio JavaScript Collection; Amateur Radio & Electronics or John Owen's Home Page DVB BITRATE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS TOOLS: DVB BITRATE CALCULATOR - Satcom Resources DVB Bitrate Calculator INPUT Values include: "...Occupied Satellite Bandwidth; 3dB Satellite Bandwidth; Allocated Satellite Bandwidth; etc..." For more information see Tools or Satcom Resources FREE SPACE LOSS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS FREE SPACE LOSS CALCULATOR - Comsearch, an Allen Telecom Company Free Space Loss Calculator INPUT Values include: "...Frequency; Distance..." For more information see Comsearch LINK BUDGET CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS LINK BUDGET CALCULATORS - Tracking and Data Relay Satellite System (TDRSS), NASA VERY VERY VERY...EXTENSIVE. For more information see Tracking and Data Relay Satellite System (TDRSS) On-line Information Center Some examples of Link Budget Calculators include Forward Service Link Budget Calculator Forward Service Link Budget Calculator INPUT Values include: TDRS Information "...TDRS Service Type; TDRS Location..." Customer Information "...Frequency; Command Data Rate; Antenna Gain; Passive Loss; User Noise Sensitivity; User Transponder Loss; Polarization Loss; Pointing Loss; Orbital Altitude; etc..." Ground Network Link Budget Calculator Ground Network Link Budget Calculator INPUT Values include: User Spacecraft "...Transmitter Power; Antenna Gain; Passive Loss; etc..." Space Ground Link "...Elevation Angle; Atmospheric Attenuation; Rain Attenuation; Polarization Loss; etc..." Ground Equipment Ground Antenna Size; Efficiency; LNA Gain; etc..." Carrier Channel; Video Channel; Data Channel Latitude/Longitude to IIRV(XYZ) Converter/Coordinate Calculator Latitude/Longitude to IIRV(XYZ) Converter/Coordinate Calculator INPUT Values include: "...Latitude; Longitude; Altitude; Earth Ellipsoidal Reference..." SATELLITE LINK BUDGET CALCULATOR - E. Johnston, Satellite Signals Ltd., Chelmsford, Essex, U.K. VERY EXTENSIVE. Satellite Link Budget Calculator INPUT Values include: "...Uplink Frequency; Uplink Antenna Eiameter; Uplink Antenna Aperture Efficiency; Uplink Antenna, Power at the Feed; Range; Bandwidth; Satellite Uplink G/T dB/K..." For more information see Satellite Signals Ltd. LOOK ANGLE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS LOOK ANGLE CALCULATOR - SES Americom For more information see SES Americom SATELLITE AZIMUTH CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SATELLITE ELEVATION CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SATELLITE FINDER WITH MAGNETIC NORTH, AZIMUTH & ELEVATION CALCULATOR - E. Johnston, Satellite Signals Ltd., Chelmsford, Essex, U.K. VERY EXTENSIVE. Satellite Finder with Bagnetic North, Azimuth & Elevation Calculator will "...help you with installing and aligning of satellite TV, DirecTV, DirecWay, and VSAT etc. Dish mounting installation and azimuth, elevation and polarisation alignment should be done carefully - don't fall off the roof! I wish you success with your satellite dish antenna install and beam pointing..." Satellite Finder with Bagnetic North, Azimuth & Elevation Calculator INPUT Values include: "...Satellite Orbit; Site Latitude; Site Longitude..." For more information see Satellite Signals Ltd. SATELLITE DESIGN CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SATELLITE DESIGN - Comsearch, an Allen Telecom Company VERY EXTENSIVE. For more information see Comsearch Examples of Satellite Calculators include Satellite Look Angle Calculator Satellite Look Angle Calculator INPUT Values include: "...Earth Station Latitude; Earth Station Longitude; Longitude of Eastern Satellite Arc; etc..." FREE SPACE LOSS CALCULATOR - Comsearch, an Allen Telecom Company Free Space Loss Calculator INPUT Values include: "...Frequency; Distance..." For more information see Comsearch TV Dish, Internet, etc. to Satellite TV DISH CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS INSTALLATION & ALIGHNMENT CALCULATORS & APPLETS ANTENNA POINTING, ANTENNA EFFECIENCY, SYSTEM G/T, ETC. CALCULATORS - Satcom Resources VERY VERY EXTENSIVE. Includes over "9" Calculators. For more information see Satcom Resources SATELLITE FINDER WITH MAGNETIC NORTH, AZIMUTH & ELEVATION CALCULATOR - E. Johnston, Satellite Signals Ltd., Chelmsford, Essex, U.K. VERY EXTENSIVE. Satellite Finder with Bagnetic North, Azimuth & Elevation Calculator INPUT Values include: "...Satellite Orbit; Site Latitude; Site Longitude..." For more information see Satellite Signals Ltd. FREE SPACE LOSS CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS FREE SPACE LOSS CALCULATOR - Comsearch, an Allen Telecom Company Free Space Loss Calculator INPUT Values include: "...Frequency; Distance..." For more information see Comsearch SATELLITE LOOK ANGLE CALCULATORS, APPLETS, ANIMATIONS & SIMULATIONS SATELLITE LOOK ANGLE CALCULATOR - SES Americom For more information see SES Americom SATELLITE LOOK ANGLE CALCULATOR - Comsearch, an Allen Telecom Company Satellite Look Angle Calculator INPUT Values include: "...Earth Station Latitude; Earth Station Longitude; Longitude of Eastern Satellite Arc; etc..." For more information see Comsearch SATELLITE LOOK ANGLE CALCULATOR - VSAT Systems Look Angle Calculator INPUT Values include: "...Code..." For more information see the VSAT Systems

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