Efficient Full Aperture Processing of TOPS Mode Data

Conference: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
06/07/2010 - 06/10/2010 at Aachen, Germany

Proceedings: EUSAR 2010

Pages: 4Language: englishTyp: PDF

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Engen, Geir; Larsen, Yngvar (Norut Tromsø, Norway)

This paper presents a very efficient wavenumber domain processor for the TOPS (Terrain Observation by Progressive Scans) imaging mode to be implemented on board European Space Agency’s upcoming Sentinel-1 operational satellite. In particular, a novel signal transform, called Moving Band Chirp Z-Transform, is introduced in order to allow the entire azimuth aperture to be focused simultaneously without any need for temporary unaliasing, which requires upsampling, or subaperture processing.