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Calibration and Estimation of Attitude Errors for a Rotating Fan-Beam Scatterometer Using Calibration Ground Stations

AutorZhu, Jintai; Dong, Xiao-long; Lin, Wenming ; Xu, Xing-ou
Palabras claveCalibration ground station
Rotating Fan-Beam Scatterometer
Attitude errors
Fecha de publicaciónene-2015
EditorInstitute of Electrical and Electronics Engineers
CitaciónIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 8(1): 171-179 (2015)
ResumenThe rotating fan-beam scatterometer (RFSCAT) onboard Chinese-French Oceanic SATellite (CFOSAT) due to launch in 2018 is a new type of radar scatterometer system for ocean surface wind vector measurement. It can give observations with more azimuth and incidence angles for a single wind vector cell (WVC) than other available scatterometers. This has been proved effective in bettering the retrieved wind quality by the simulation approach. However, its innovative observing geometry is challenging for the coming in-orbit external calibration. In this paper, CFOSAT attitude errors are estimated, and its antenna gain pattern is monitored and verified based on the external calibration strategy of a Ku-band scatterometer employing calibration ground stations (CGSs). The effects of satellite attitude errors on the measurements are also analyzed, together with simulation results for the external calibration. It is shown that a gain pattern with accuracy of 0.08 dB and attitude errors within 0.025° are achieved. © 2008-2012 IEEE
Descripción9 pages, 9 figures, 1 table
Versión del editorhttp://dx.doi.org/10.1109/JSTARS.2014.2323993
Identificadoresdoi: 10.1109/JSTARS.2014.2323993
issn: 1939-1404
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