Unambiguous Recovery of Multistatic SAR Datafor Nonzero Cross Track Baseline Case

Journal article (2020)

Authors

O. Dogan Microwave Sensing, Signals & Systems - EEMCS
Faruk Uysal Microwave Sensing, Signals & Systems - EEMCS
Paco López-Dekker Mathematical Geodesy and Positioning - CEG
Research Group
Microwave Sensing, Signals & Systems (EEMCS) (TU Delft)
Copyright: © 2020 O. Dogan, Faruk Uysal, F.J. Lopez Dekker
DOI
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https://doi.org/10.1109/LGRS.2020.3021759
Radar signal processing Bistatic synthetic aperture radar (SAR) Multistatic SAR image processing SAR constellation
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Published Date

2020

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Microwave Sensing, Signals & Systems

Abstract

A wide-swath synthetic aperture radar (SAR) image is known to be achievable by merging multistatic aliased data that is collected with an appropriate along-track displacement. However, in terms of both flexibility requirements like potentiality of both along-track and cross-track (XT) interferometry and design requirements like orbital safety, etc., a XT baseline is not only demanded but also unavoidable. In this work, a method is proposed in order to merge SAR data to recover the Doppler spectrum unambiguously for the nonzero XT baseline case. The algorithm is compared and validated by simulating an azimuth invariant multistatic SAR satellite constellation. The results are promising in terms of dealing with XT baselines.

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