Ground Moving Target Detection and Estimation for Airborne Multichannel Radar Based on Coherent Difference Processing

Chong Song; Bingnan Wang; Maosheng Xiang; Weidi Xu; Zhongbin Wang; Yachao Wang; Xiaofan Sun

doi:10.3390/rs14143325

Remote Sensing (Jul 2022)

Ground Moving Target Detection and Estimation for Airborne Multichannel Radar Based on Coherent Difference Processing

Chong Song,
Bingnan Wang,
Maosheng Xiang,
Weidi Xu,
Zhongbin Wang,
Yachao Wang,
Xiaofan Sun

Affiliations

Chong Song: National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
Bingnan Wang: National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
Maosheng Xiang: National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
Weidi Xu: National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
Zhongbin Wang: National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
Yachao Wang: National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China
Xiaofan Sun: Beijing Institute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, China

DOI: https://doi.org/10.3390/rs14143325
Journal volume & issue: Vol. 14, no. 14
p. 3325

Abstract

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Ground moving targets with slow velocity and low radar cross-section (RCS) are usually embedded in the clutter Doppler spectrum. To achieve the detection and estimation of such targets, a novel method operating in the range-Doppler domain is developed for airborne multichannel radar systems. The interferometric phases that are sensitive to moving targets are obtained by coherent difference processing (CDP) for target detection. Moreover, the amplitude is utilized as complementary information to improve the detection performance. Then, a matched filter bank is designed and applied to the CDP processed data to complete the parameter estimation. The proposed method provides the benefits of high efficiency and robustness, since it does not involve matrix inversion, and it does not require homogeneous clutter assumption unlike adaptive algorithms. Experiments on real data acquired by an airborne X-band four-channel radar system demonstrate its effectiveness.

Published in Remote Sensing

ISSN: 2072-4292 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science
Website: http://www.mdpi.com/journal/remotesensing/

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