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