Coherent Integration Algorithm for a Maneuvering Target With High-Order Range Migration

被引：144

作者：

Kong, Lingjiang ^{[1
]}

Li, Xiaolong ^{[1
]}

Cui, Guolong ^{[1
]}

Yi, Wei ^{[1
]}

Yang, Yichuan ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Elect Engn, Chengdu 611731, Peoples R China

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2015年 / 63卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Maneuvering target; coherent integration; third-order range migration; generalized keystone transform; range migration correction; RADON-FOURIER TRANSFORM; KEYSTONE TRANSFORM; PARAMETER-ESTIMATION; IMPLEMENTATION;

D O I：

10.1109/TSP.2015.2437844

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper considers the coherent integration problem for a maneuvering target with complex motions, where the velocity, acceleration, and jerk result in respectively the first-order range migration (FRM), second-order range migration (SRM), and third-order range migration (TRM) within the coherent pulse interval. A new coherent integration algorithm based on generalized keystone transform (KT) and second-order dechirp process is proposed, which employs the third-order KT, six-order KT, second-order KT, and fold factor searching to correct the TRM, SRM, and FRM, respectively. The range migration change during each step and computational complexity are also theoretically analyzed. Compared with the generalized Radon Fourier transform (GRFT) algorithm, the presented method can avoid the blind speed sidelobe (BSSL) and acquire close integration performance but with much lower computational cost. Simulations are provided to demonstrate the effectiveness. Finally, a generalized method, named generalized KT and generalized dechirp process (GKTGDP), is also introduced for the maneuvering target with arbitrary high-order range migration.

引用

页码：4474 / 4486

页数：13

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