Temporal Alignment and Doppler Centroid Estimation in Opportunistic Bistatic SAR Systems

Conference: EUSAR 2008 - 7th European Conference on Synthetic Aperture Radar
06/02/2008 - 06/05/2008 at Friedrichshafen, Germany

Proceedings: EUSAR 2008

Pages: 4Language: englishTyp: PDF

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Lopez-Dekker, Paco; Serra-Morales, Pau; Mallorqui, Jordi J. (Remote Sensing Laboratory (RSLab), Universitat Politècnica de Catalunya (UPC), Spain)

This paper discusses temporal alignment of the received data with the satellite’s orbit in opportunistic bistatic SAR systems. Different sources of phase errors are discussed. The limited impact of a misalignment is studied and an algorithm to find the Zero Doppler Time of the receiver using the phase history is proposed and evaluated.