Refined Motion Compensation for Highly Squinted Spotlight Synthetic Aperture Radar
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
Nguyen, Minh Phuong (Leibniz Universität Hannover, Germany)
This paper presents a motion compensation algorithm which is capable of dealing with large motion errors for highly squinted spotlight SAR. The approach consists of a phase error compensation, a shift to correct the delay time error and an interpolation/resampling in azimuth. For pulsed SAR with a 30deg squint angle, the proposed algorithm compensates motion errors that are 10 times greater than the resolution cells and obtains nearly the theoretical achievable resolutions of the focused image. The main contribution of this paper is the consideration of the effect of motion errors in the presence of a large squint angle.