AMSU-B is a 5 channel cross-track, continuous line scanning,total power
microwave radiometer. The instrument has an instantaneous field-of-view of
1.1°. Spatial resolution at nadir is nominally 16 km (9.94 mi). The
antenna provides a cross-track scan, scanning ±48.95° from nadir with a
total of 90 Earth fields-of-view per scan line. This instrument completes
one scan every 8/3 seconds. The two channels are centered nominally at 89
GHz and 150 GHz, and the other three centered around the 183.31 GHz water
vapor line with double-sideband centers located at 183.31±1, ±3, and ±7
GHz, respectively. AMSU-B has a FOV of 1.1 degrees ±10%.
