Modified Range Migration Algorithm in GEO SAR system
Konferenz: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
07.06.2010 - 10.06.2010 in Aachen, Germany
Tagungsband: EUSAR 2010
Seiten: 4Sprache: EnglischTyp: PDF
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Autoren:
Yang, Wenfu; Liu, Feifeng; Hu, Cheng; Ding, Zegang (Department of EE, Beijing Institute of Technology, 100081, PR China)
Zhu, Yu (Chinese Academy of Space Technology, 100094, PR China)
Inhalt:
The key problem of the imaging processing in geosynchronous earth orbit (GEO) SAR is the space-variance of the Doppler parameters, which will result in the defocusing with classical imaging algorithm. In this paper, a Modified Range Migration Algorithm (RMA) is proposed to overcome the space-variance of Doppler parameters by compensating the velocity change along the scene range direction. Furthermore the simulation results fully verify the effectiveness of derived algorithm after velocity compensation.