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| Título: | Calibration and Estimation of Attitude Errors for a Rotating Fan-Beam Scatterometer Using Calibration Ground Stations |
Autor: | Zhu, Jintai; Dong, Xiao-long; Lin, Wenming CSIC ORCID; Xu, Xing-ou | Palabras clave: | Calibration ground station Rotating Fan-Beam Scatterometer Calibration Attitude errors RFSCAT CGS |
Fecha de publicación: | ene-2015 | Editor: | Institute of Electrical and Electronics Engineers | Citación: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 8(1): 171-179 (2015) | Resumen: | The 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 | Descripción: | 9 pages, 9 figures, 1 table.-- © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works | Versión del editor: | https://doi.org/10.1109/JSTARS.2014.2323993 | URI: | http://hdl.handle.net/10261/117523 | DOI: | 10.1109/JSTARS.2014.2323993 | Identificadores: | issn: 1939-1404 |
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