The Advanced Microwave Sounding Unit (AMSU-A2) consists of the lowest frequencies of the AMSU-A system (K band channel 1 and Ka band channel 2), and the associated scanning, calibration, processing, and power control hardware and circuitry.
At each channel frequency, the antenna beamwidth is a constant 3.33° ± 10% (circular, at half power point). Thirty contiguous resolution scenes are sampled in a stepped-scan fashion every eight seconds.
AMSU-A2 radiometer characteristics are illustrated in the table below:
|Centre frequency (MHz)||Bandwidth (MHz)||Centre frequency stability (MHz)|
|Calibration Accuracy (K)||Polarization||-3 dB Stop Band (SB) fc ± SB (MHz)|
V : Polarization vector is parallel to scan plane at nadir
Last update: 28 June 2006