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Efficient Full Aperture Processing of TOPS Mode Data Using the Moving Band Chirp Z -Transform

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2 Author(s)
Engen, G. ; Northern Res. Inst. Tromso (Norut), Tromso, Norway ; Larsen, Y.

The main operational mode of the European Space Agency's upcoming Sentinel-1 operational satellite will be the Terrain Observation by Progressive Scans (TOPS) imaging mode. This paper presents a very efficient wavenumber domain processor for the processing of TOPS mode data. In particular, a novel signal transform, called a 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.

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:49 ,  Issue: 10 )