Operator: National Oceanic and Atmospheric Administration (NOAA)
Launch date: 05/1998 (NOAA 15), 09/2000 (NOAA 16), 06/2002 (NOAA 17), 05/2005 (NOAA 18)
Type of orbit: sun-synchronous, i.e. the satellite crosses a certain point always at the same time of the day.
elevation: 850 km
Inclination of the orbit: 98 degrees compared to the equatorial plan.
Period of revolution: 102 minutes, 14 orbits are achieved per day on ascending and descending passes. The period of revolution is the time taken for the satellite to complete a full rotation of the Earth. The 2 satellites are out of phase; a same area is flown over at least 4 times per day with an interval of approximately 6 hours.
AVHRR (Advanced Very High Resolution Radiometer) is a radiometer which enables a very high resolution.
This instrument scans a roughly 3000 km wide swath. (1,1 km to the vertical of the satellite).
|channel||Wavelength (µm)||Typical use|
|1||0.58 - 0.68||Daytime cloud and surface mapping|
|2||0.725 - 1.00||Land-water boundaries|
|3A||1.58 - 1.64||Snow and ice detection|
|3B||3.55 - 3.93||Night cloud mapping, sea surface temperature|
|4||10.30 - 11.30||Night cloud mapping, sea surface temperature|
|5||11.50 - 12.50||Sea surface temperature|