Maneuvering Target Coherent Integration and Detection in PRI-Staggered Radar Systems

被引：2
作者：
Ma, Jingtao [1 ,2 ,3 ]
Yu, Jinpei [1 ,2 ,4 ]
Liang, Guang [3 ,5 ]
Sun, Siyue [3 ,5 ]
Jiang, Xinglong [3 ,5 ]
Huang, Penghui [6 ]
机构：
[1] Innovat Acad Microsatellites CAS, Shanghai 201203, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Shanghai Engn Ctr Microsatellites, Shanghai 201203, Peoples R China
[4] ShanghaiTech Univ, Shanghai 201210, Peoples R China
[5] Chinese Acad Sci, Innovat Acad Microsatellites, Shanghai 201203, Peoples R China
[6] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Shanghai 200240, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2022年 / 19卷
关键词：
Radar; Doppler effect; Interpolation; Doppler radar; Radar detection; Transforms; Small satellites; Maneuvering target; motion parameter estimation; nonuniform signal sampling; FOURIER TRANSFORM;
D O I：
10.1109/LGRS.2021.3105904
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
As for a new-style radar, the random pulse repetition interval (PRI) pulse waveform may be transmitted, and then the target Doppler parameter estimation precision and detection ability by using the conventional techniques may be invalid due to the irregular signal sampling. To solve these problems, this letter proposes a simple, yet effective and quasi-optimal coherent integration method with random pulse resampling. The proposed method first reconstructs the nonuniformly sampled signal into a uniform grid in the range frequency domain based on the modified sinc interpolation theory. Then, a matched filtering function related to the target chirp parameter is constructed in order to eliminate the residual coupling between range and azimuth. Finally, a moving target can be well imaged after performing the target motion compensation.
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页数：5
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