空间群目标ISAR成像与检测方法

doi:10.12305/j.issn.1001-506X.2025.06.13

Abstract

Abstract:

The application of narrowband inverse synthetic aperture radar (ISAR)imaging processing methods contributes to the precise detection of space group target. However, due to variations in the motion states of group target, the imaging results may exhibit significant blurring, thereby limiting the capability to detect targets within the group. To address the above problem, a scenario imaging and target detection method for space group target based on ISAR processing framework is presented. Initially, Chirplet components extracted from different range cells based on motion feature consistency association ensure the correspondence between the target and its components. Subsequently, by establishing a cost function, individual target velocity deblurring is achieved, providing effective estimation of target motion parameters. Finally, experimental results from numerical simulations prove the effectiveness of the proposed method and its enhancement for group target detection performance.

Key words: narrowband inverse synthetic aperture radar (ISAR) imaging, group target detection, Chirplet component correlation, velocity blurring, parameterized motion compensation

CLC Number:

TN95

Junhao JIA, Xuebin CHEN, Zhangfeng LI, Chunmao YE. ISAR imaging and detection method for space group target[J]. Systems Engineering and Electronics, 2025, 47(6): 1843-1854.

Figures/Tables 13

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Table 1

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目标序号	初始距离/km	径向速度/(m/s)	径向加速度/(m/s²)	目标序号	初始距离/km	径向速度/(m/s)	径向加速度/(m/s²)
1	180+0.08	1 800	0	9	180	1 800-11.25	-2
2	180+0.07	1 800+7.5	-16	10	180-0.01	1 800+3.75	2
3	180+0.06	1 800+10	-14	11	180-0.02	1 800-2.25	4
4	180+0.05	1 800-10	-12	12	180-0.03	1 800+6.25	6
5	180+0.04	1 800+5	-10	13	180-0.04	1 800-3.75	8
6	180+0.03	1 800-5	-8	14	180-0.05	1 800+1.25	10
7	180+0.02	1 800-8.75	-6	15	180-0.06	1 800+11.25	12
8	180+0.01	1 800+8.75	-4	16	180-0.07	1 800-1.25	14

脉冲串序号	平均距离误差/m	平均多普勒频率误差/Hz	脉冲串序号	平均距离误差/m	平均多普勒频率误差/Hz
1	2.58	1.52	9	2.54	1.32
2	2.23	1.06	10	2.80	3.62
3	1.93	0.87	11	1.92	1.95
4	1.42	1.11	12	2.63	2.56
5	2.37	1.39	13	2.86	4.99
6	1.61	1.12	14	4.44	2.55
7	1.92	0.94	15	3.57	1.90
8	1.78	1.27	16	5.33	4.31

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ISAR imaging and detection method for space group target

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