A multi-channel SAR deceptive moving target detection method based on angle-velocity manifold orthogonal complement projection

doi:10.7523/j.ucas.2026.036

Abstract

Abstract: Multi-channel synthetic aperture radar (SAR) is capable of moving target detection and is widely used in military reconnaissance and battlefield surveillance. Advanced deceptive jamming techniques, however, severely impact moving target detection. When the radial velocity is unknown, the conventional displaced phase center antenna (DPCA) method struggles to detect deceptive moving targets. To address this issue, this paper proposes an orthogonal complement projection method based on the angle-velocity manifold. After eliminating real stationary targets using DPCA, a manifold subspace parameterized by angle and velocity is constructed. The orthogonal complement projection method is then applied to suppress real moving targets, thereby enabling the detection of deceptive moving targets and the estimation of the jammer’s azimuth position. Simulations with point targets and validation using measured background data demonstrate that the proposed method achieves energy suppression of real moving targets exceeding -60 dB.

Key words: synthetic aperture radar (SAR), displaced phase-center antenna (DPCA), orthogonal complement projection, deceptive moving-target detection

CLC Number:

TN958.98

LI Yipei, ZHAO Fuhai, AI Zhanyang, LYU Zhipeng, ZHENG Mingjie. A multi-channel SAR deceptive moving target detection method based on angle-velocity manifold orthogonal complement projection[J]. Journal of University of Chinese Academy of Sciences, DOI: 10.7523/j.ucas.2026.036.

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