Ambiguities in High Squint Mode SAR
Konferenz: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
23.04.2012 - 26.04.2012 in Nuremberg, Germany
Tagungsband: EUSAR 2012
Seiten: 4Sprache: EnglischTyp: PDFPersönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Dong, Xichao; Wang, Jianping (Department of EE, Beijing Institute of Technology, China)
Ambiguities is a key performance in Synthetic Aperture Radar (SAR) images, which should be suppressed to a low level in an SAR system design. However, the Ambiguities do not lie in the two main lobes of the antenna in high squint mode SAR. Consequently, traditional Ambiguity analysis method becomes inaccurate. This paper firstly analyzes the non-coincidence between the azimuth (range) Ambiguities locations and the two main lobes of antenna. Then, accurate Ambiguities performance for high squint mode space-borne SAR is deviated based on vector analysis, considering earth rotation and elliptical orbit effects. The cross-term Ambiguities deteriorate sharply.