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2013-05-26
A Novel Compressed Sensing Based Method for Space Time Signal Processing for Airborne Radars
By
Progress In Electromagnetics Research B, Vol. 52, 139-163, 2013
Abstract
Space time adaptive processing (STAP) is a signal processing technique for detecting slowly moving targets using airborne radars. The traditional STAP algorithm uses a lot of training cells to estimate the space-time covariance matrix, which occupies large computer memory and is time-consuming. Recently, a number of compressed sensing based STAP algorithms are proposed to detect moving target in strong clutter situation. However, the coherence of the sensing matrix is not low due to the high resolution of the DOA (direction of arrival)-Doppler plane, which does not guarantee a good reconstruction of the sparse vector with large probability. Consequently, the direct estimation of the target amplitude may be unreliable using sparse representation when locating a moving target from the surrounding strong clutter. In this study, a novel method named similar sensing matrix pursuit is proposed to reconstruct the sparse radar scene directly based on the test cell, which reduces the computing complexity efficiently. The proposed method can efficiently cope with the deterministic sensing matrix with high coherence. The proposed method can estimate the weak elements (targets) as well as the prominent elements (clutter) in the DOA-Doppler plane accurately, and distinguish the targets from clutter successfully.
Citation
Jing Liu, Chong Zhao Han, Xiang Hua Yao, and Feng Lian, "A Novel Compressed Sensing Based Method for Space Time Signal Processing for Airborne Radars," Progress In Electromagnetics Research B, Vol. 52, 139-163, 2013.
doi:10.2528/PIERB13033105
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