4 research outputs found
On Board Accurate Calibration of Dual-Channel Radiometers Using Internal and External References
This paper presents a method for combining internal
noise injection and external reference standard looks to accurately
calibrate an airborne dual-channel radiometer. The method
allows real-time estimation of the correct values of the radiometer
gains and offsets, even for nontemperature-stabilized radiometers
and with minimum loss of measurement time spent in external
load measurement. Crosstalk and leakage introduced by the noise
injection circuitry is also taken into account, thus providing high
gain and offset estimation accuracy. The method was implemented
on a National Oceanic and Atmospheric Administration airborne
instrument, the Polarimetric Scanning Radiometer, which was
used to obtain an extensive set of radiometric measurements over
oceanic convection during CAMEX3 in August–September 1998
On Board Accurate Calibration of Dual-Channel Radiometers Using Internal and External References
This paper presents a method for combining internal
noise injection and external reference standard looks to accurately
calibrate an airborne dual-channel radiometer. The method
allows real-time estimation of the correct values of the radiometer
gains and offsets, even for nontemperature-stabilized radiometers
and with minimum loss of measurement time spent in external
load measurement. Crosstalk and leakage introduced by the noise
injection circuitry is also taken into account, thus providing high
gain and offset estimation accuracy. The method was implemented
on a National Oceanic and Atmospheric Administration airborne
instrument, the Polarimetric Scanning Radiometer, which was
used to obtain an extensive set of radiometric measurements over
oceanic convection during CAMEX3 in August–September 1998