空时耦合项对空时自适应处理的影响

doi:10.3969/j.issn.1001-2400.2012.02.034

J4 ›› 2012, Vol. 39 ›› Issue (2): 207-212.doi: 10.3969/j.issn.1001-2400.2012.02.034

• Original Articles • Previous Articles

Influence of the space-time coupling term on STAP

LV Wei ^,2;WANG Zhijie¹;LI Jianchen^1,2;WANG Mingzhou^1,2;YANG Baomin^1,2;HU Qiao^1,2

(1. The 705th Research Inst., China Shipbuilding Industry Corp., Xi'an 710075， China;
2. Sci. and Tech. on Underwater Info. and Control Lab., Xi'an 710075， China)

Received:2011-12-06 Online:2012-04-20 Published:2012-05-21
Contact: LV Wei E-mail:lv020002@163.com

Abstract

Abstract:

In order to use the power spectrum propagation characteristics and adopt the theory of STAP for reverberation suppression and moving object detection, an improved method of STAP for sonar is proposed. Firstly, the principle of STAP is analyzed according to the echo model of radar. Secondly, comparing the echo models of sonar and radar, this method of STAP is presented and the Space-time coupling steering vector is used in space time processing. Finally, the proposed method of STAP is applied in space time processing and object detection. Simulation results illustrate that the modified method of STAP is beneficial to underwater object detection, and that applying the space-time coupling steering vector can increase the accuracy of the direction estimation of targets.

Key words: reverberation, space time adaptive processing, echo signal model, space-time coupling term

CLC Number:

LV Wei;WANG Zhijie;LI Jianchen;WANG Mingzhou;YANG Baomin;HU Qiao. Influence of the space-time coupling term on STAP[J].J4, 2012, 39(2): 207-212.

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[1]	LI Cai-cai;LIAO Gui-sheng;ZHU Sheng-qi;YUAN Xiao-yi. Study of a post-Doppler processing STAP method [J]. J4, 2009, 36(2): 240-244.
[2]	WANG Wan-lin;LIAO Gui-sheng;ZHANG Guang-bin. Improvement on the performance of the auxiliary channel STAP in the non-homogeneous environment [J]. J4, 2004, 31(5): 761-764.

Influence of the space-time coupling term on STAP

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