The earth is constantly monitored by several satellites operating in the earth exploration-satellite service (EESS) or space research service (SRS). These artificial satellites have onboard space radio stations from which they gather data. The data is transmitted back to earth via feeder links. This article lists a number of current active Earth observation satellites and their downlink transmission frequencies.
Frequency assignments + This table contains examples of downlink frequency assignments Satellite Frequency Band Terra 8212.5 MHz 8175-8215 MHz METEOROLOGICAL-SATELLITE SERVICEEarth exploration-satellite service Aqua 8160 MHz 8025-8175 MHz Earth exploration-satellite service NOAA 17,18 1707 MHz 1700-1710 MHz Meteorological-satellite service ERS-2 (High rate) 8140 MHz 8025-8175 MHz Earth exploration-satellite service SPOT 4,5 8253 MHz 8215-8400 MHz Earth exploration-satellite service EROS A18150 MHz 8025-8175 MHz Earth exploration-satellite service 8250 MHz 8215-8400 MHz Landsat 5, 7 8212.5 MHz 8175-8215 MHz Earth exploration-satellite service CBERS 2B8103 MHz8025-8175 MHz Earth exploration-satellite service 8212 MHz 8175-8215 MHz METEOROLOGICAL-SATELLITE SERVICEEarth exploration-satellite service 0 8321 MHz 8215-8400 MHz Earth exploration-satellite service SAC-C 0 MHz 0-12 MHz Earth exploration-satellite service
See also List of Earth observation satellites Radio waves Frequency allocation
References
External links Transmission at the S band