GEOPoint is an easy to use satellite antenna pointing calculator, for geostationary communications satellites. It calculates the azimuth and elevation pointing angles from a given location on the earth towards a specified geostationary satellite. The program also calculates polarisation tilt angles, estimates dates and times of annual sun-outage events, calculates antenna G/T, EIRP and frequency stability, and estimates path-loss and rain-attenuation based on ITU-R climate models. As used by Hausfeld Consulting for satellite communications planning.
Anyone may download and install GEOPoint to access the basic Lite features free of charge.
Lite Features (Free):
an easy to use dialog-style user interface for data entry and calculation;
entry of earth station location coordinates directly, or by clicking on a world map;
select earth station location from a built-in list of world major cities;
display of satellite azimuth and elevation contours on the world map to aid in site selection;
entry of latitude and longitude coordinates in d,m,s format, or as decimal degrees;
entry of coordinates in Australian AMG coordinates and automatic conversion to latitude, longitude;
calculation of pointing angles to a specified satellite for common types of antenna mount;
display of azimuth pointing angles relative to True North, and relative to local magnetic north;
estimation of antenna movement limits for inclined orbit satellites;
calculation of polarisation tilt angle, loop-back path delay, and required antenna tracking speeds;
estimation of the peak dates and times for sun-interference on the receive link.
Output of a summary report in PDF or HTML format.
Pro Features (requires Registration):
ability to zoom the world map one level for more accurate site selection;
ability to save the current map image to file.
ability to save azimuth and elevation contours to a KML file for viewing in Google Earth.
estimation of site altitude from ITU-R world topography model;
select earth station location from a user supplied file containing a list of sites;
view and save a diagram of the GEO Arc visible from the site;
labelling of individual satellites and plotting local horizon and antenna movement limits;
plotting of satellite locations from Norad two-line element or Intelsat ephemeris format orbit data;
display of ITU-R Climate Model data for the specified earth station location;
estimate antenna G/T from user inputs of antenna parameters and frequency;
calculate path loss between the earth station and satellite at a specified frequency using ITU-R propagation models;
estimate the impact of satellite motion on EIRP and frequency stability;
output a batch report of pointing angles from the site, for a list of user selected satellites;
output a detailed report of sun interference dates and times for given receive antenna parameters;
output a detailed report of rain attenuation loss for a range of frequencies and link availability;
output a batch summary report for a list of earth station sites.
|Installation||Instal And Uninstall|
|Keywords||antenna pointing calculator, geostationary communication, antenna calculator, satellite, antenna, calculate|
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