Non-overlapping trajectory Multistatic SAR Coherent Change Detection

Date

2022-04-21

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IET

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Conference paper

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Citation

Hagelberg A, Andre D, Finnis M. (2022) Non-overlapping trajectory Multistatic SAR Coherent Change Detection. In: IET Radar 2022: International Conference on Radar Systems, 24-27 October 2022, Edinburgh, Scotland

Abstract

Synthetic Aperture Radar (SAR) Coherent Change Detection (CCD) allows the detection of very small scene changes but is typically reliant on a high degree of similarity in the radar trajectories, with a small baseline. In the case of multistatic SAR imagery, such as those formed by a constellation of SAR satellites, the radar trajectories may have a greater baseline than those collected by a monostatic system such as an aircraft. This paper investigates the effects of multistatic trajectories on the measured coherence between imagery, and how this relates to the spatial frequency (K-space). In particular, the case where radar platform trajectories are greatly dissimilar, but where the K-space image supports still contains a high degree of overlap, is investigated. This paper uses multistatic SAR collections measured at the Ground Based SAR Laboratory at Cranfield University.

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Keywords

synthetic aperture radar (SAR), K-space, fourier domain, coherent change detection (CCD), multistatic

Rights

Attribution-NonCommercial 4.0 International

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