Satellite Frequency Bands INTELSAT Argos Platforms Apogee and Perigee Heights Inclined orbit operation of geostationary satellites U.S. Domsats Cospas-Sarsat Universal time Julian dates Sidereal time The orbital plane The geocentric-equatorial coordinate system Earth station referred to the IJK frame The topocentric-horizon coordinate system The subsatellite point Local Mean Solar Time and Sun-Synchronous Orbits Antenna Look Angles The Polar Mount Antenna Limits of Visibility Near Geostationary Orbits Earth Eclipse of Satellite Launching Orbits Atmospheric Losses Ionospheric Effects Rain Attenuation