Analysis and Modeling of Baseline Errors of Airborne ATI-SAR
Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany
Proceedings: EUSAR 2012
Pages: 4Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Wang, Xin (Key Lab of Tech. in Geo-spatial Info. Processing & App. System, Inst. of Electronics, Chinese Acad. of Sci., China)
Hong, Jun; Hu, Jiwei; Ming, Feng (National Key Lab of Microwave Imaging Technology, Institute of Electronics, Chinese Academy of Sciences, China)
Along-track interferometric synthetic aperture radar (ATI-SAR) is used in ground-moving targets indication (GMTI) and in speed and position acquirement. Errors of interferometric parameters largely affect the precision of measuring speed; therefore, analyzing these errors is helpful for the study of calibration techniques. In this paper, by analyzing the sensitivity of speed to parameters, we firstly reach the conclusion that the speed is very sensitive to baseline vectors so that it needs to be considered in the interferometric calibration. Then mathematical models are established for baseline error sources. At last, we come to a series of beneficial conclusions.