A modified OMP method for multi-orbit three dimensional ISAR imaging of the space target

doi:10.23919/JSEE.2023.000066

Journal of Systems Engineering and Electronics ›› 2023, Vol. 34 ›› Issue (4): 879-893.doi: 10.23919/JSEE.2023.000066

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles

A modified OMP method for multi-orbit three dimensional ISAR imaging of the space target

Libing JIANG¹(), Shuyu ZHENG¹^,*(), Qingwei YANG¹, Peng YANG²(), Zhuang WANG¹()

¹ Science and Technology on Automatic Target Recognition, National University of Defense Technology, Changsha, 410073, China
² Xi’an Satellite Measurement and Control Center, Xi’an 710600, China

Received:2021-05-25 Online:2023-08-18 Published:2023-08-28
Contact: Shuyu ZHENG E-mail:jianglibing@nudt.edu.cn;1846372244@qq.com;liuzhang881@126.com;zhuang_wang@sina.com
About author:
JIANG Libing was born in 1982. He received his Ph.D. degree in information and communication engineering from National University of Defense Technology,Changsha, China, in 2014. He is currently a vice professor in the School of Electronics Science and Engineering, National University of Defense Technology, Changsha, China. His current research interests include electromagnetic scattering modeling, microwave imaging and radar image interpretation. E-mail: jianglibing@nudt.edu.cn

ZHENG Shuyu was born in 1996. He received his B.S. degree in fire control and command and the M.S. degree in electronic science and technology from Air Force Engineering University, Xi’an, China, in 2014 and 2020, respectively. Now he is a currently working toward to the Ph.D. degree in the Science and Technology on Automatic Target Recognition, National University of Defense Technology, Changsha, China.His current research interests include radar signal processing and three dimensional imaging of space targets. E-mail: 1846372244@qq.com

YANG Qingwei was born in 1994. He received his M.S. degree in information and communication engineering from National University of Defense Technology,Changsha, China, in 2020. Now he is currently working toward to the Ph.D. degree in the Science and Technology on Automatic Target Recognition, National University of Defense Technology, Changsha, China.His current research interests includespace targets’surveillance and radar resource scheduling and allocation

Peng Yang was born in 1992. He received his master degree in information and communication engineering from National University of Denfense Technology, Changsha,China,in 2016. He is currently an engineer at the Xi’an Satellite Measurement and Control Center,specializing in the field of radar imaging. E-mail: yp19921008@163.com

WANG Zhuang was born in 1974. He received his Ph.D. degree in information and communication engineering from National University of Defense Technology,Changsha, China, in 2001. He is currently a professor in the School of Electronics Science and Engineering, National University of Defense Technology, Changsha, China. His current research interests include radar signal processing, space targets’ surveillance and target recognition. E-mail: zhuang_wang@sina.com

Abstract

Abstract:

The conventional two dimensional (2D) inverse synthetic aperture radar (ISAR) imaging fails to provide the targets’ three dimensional (3D) information. In this paper, a 3D ISAR imaging method for the space target is proposed based on mutli-orbit observation data and an improved orthogonal matching pursuit (OMP) algorithm. Firstly, the 3D scattered field data is converted into a set of 2D matrix by stacking slices of the 3D data along the elevation direction dimension. Then, an improved OMP algorithm is applied to recover the space target’s amplitude information via the 2D matrix data. Finally, scattering centers can be reconstructed with specific three dimensional locations. Numerical simulations are provided to demonstrate the effectiveness and superiority of the proposed 3D imaging method.

Key words: three dimensional inverse synthetic aperture radar (3D ISAR) imaging, space target, improved orthogonal matching pursuit (OMP) algorithm, scattering centers

Libing JIANG, Shuyu ZHENG, Qingwei YANG, Peng YANG, Zhuang WANG. A modified OMP method for multi-orbit three dimensional ISAR imaging of the space target[J]. Journal of Systems Engineering and Electronics, 2023, 34(4): 879-893.

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References 29

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Parameter	value
Carrier frequency ${f_0} $ /GHz	16.67
Signal bandwidth B/GHz	2
Pulse duration T_rs/μs	400
Observation time T_r/s	1.3963
Number of azimuth angle	280
Pulse repetition frequency (PRF)/Hz	200
Azimuth angle/(°)	0−4
Observation distance R_k/km	20

Algorithm	Imaging entropy
Algorithm	Four orbits	Seven orbits	11 orbits	20 orbits
OMP algorithm	9.2385	9.2180	8.3779	7.6213
Improved OMP algorithm	8.0766	8.0662	7.9958	7.3242

Algorithm	Running time
Algorithm	Four orbits	Seven orbits	11 orbits	20 orbits
3D-FFT algorithm	5.850087	7.403087	8.401756	9.056088
BP algorithm	651.823212	776.154612	860.884807	925.623634
OMP algorithm	32.501502	80.764210	157.998510	261.189289
STOMP algorithm	13.707404	24.910388	34.674106	55.044340
Improved OMP algorithm	30.216193	36.545747	38.207677	54.325617

A modified OMP method for multi-orbit three dimensional ISAR imaging of the space target

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