基于逆滤波处理的雷达干扰效果在线评估方法

doi:10.12305/j.issn.1001-506X.2023.09.08

摘要/Abstract

摘要：

非合作的干扰效果在线评估是实现自适应干扰及认知电子对抗闭环的关键问题和难点问题。对此, 提出一种基于逆滤波处理的雷达干扰效果在线评估方法, 通过感知得到的雷达系统外部状态, 利用逆滤波处理估计雷达系统内部跟踪误差, 进而实现对应雷达干扰样式的干扰效果在线评估和干扰参数实时优化。首先对逆滤波处理实现雷达跟踪误差估计问题进行建模, 然后针对杂波背景下的雷达滤波算法进行逆滤波处理推导。具体设计了针对拖引欺骗干扰的干扰效果在线评估和干扰参数优化方法, 最后以对抗导引头雷达的距离门拖引干扰为例进行了数字仿真验证, 实验结果验证了所提方法的可行性和有效性。

关键词: 雷达对抗, 在线干扰效果评估, 逆信号处理, 逆概率数据关联滤波, 距离门拖引干扰

Abstract:

Evaluation of the jamming effect under non-cooperative conditions is a key and difficult problem in realizing the closed loop of cognitive electronic countermeasures. Thus, a method that can estimate the internal tracking error of the radar system through inverse filtering processing of the external states of the radar system is proposed. This method can realize the online evaluation of the jamming effectiveness for the current jamming action and optimizes the corresponding jamming parameters. This paper firstly models the inverse filter processing problem to estimate the radar tracking error, and then derives the inverse filter processing algorithm for typical radar filter algorithms. Specifically, the method of online jamming effectiveness evaluation and jamming parameter optimization for range gate pull off (RGPO) jamming is designed. Simulation results with RGPO self-defense jammer against the seeker radar prove the feasibility and effectiveness of the proposed method.

Key words: radar countermeasure, online jamming effectiveness evaluation, inverse signal processing, inverse probabilistic data association (PDA) filter, range gate pull off (RGPO)

中图分类号:

TN974

李瑞, 朱梦韬, 李云杰. 基于逆滤波处理的雷达干扰效果在线评估方法[J]. 系统工程与电子技术, 2023, 45(9): 2706-2717.

Rui LI, Mengtao ZHU, Yunjie LI. Online evaluation method of radar jamming effect based on inverse filtering processing[J]. Systems Engineering and Electronics, 2023, 45(9): 2706-2717.

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突变点检测结果	干扰效果评估		策略调整
突变点检测结果	结果	时刻	过程控制	参数调整
相继检测到起拖和成功突变点	成功	成功突变点时刻	当前策略继续拖引	无
相继检测到起拖和失败突变点	Ⅰ型失败	失败突变点时刻	即刻重启下次拖引	减小拖引速度
拖引期只检测到起拖突变点	Ⅱ型失败	拖引期结束时刻	即刻重启下次拖引	增大拖引速度
拖引期过半未检测到起拖突变点	Ⅲ型失败	拖引期中间时刻	即刻重启下次拖引	减小拖引速度

拖引干扰参数名称	参数设定
停拖期时长/s	1
干扰信号与回波信号幅度比	1.4
拖引期时长/s	8
关闭期时长/s	1
拖引周期/s	10
拖引速度/(m·s^-1)	50~700

拖引速度/(m·s^-1)	评估正确性	评估时延/s	跟踪误差估计 RMSE/m
50	正确	0	4.89
100	正确	0.02	7.25
200	正确	0.02	7.80
300	正确	0.02	7.48
400	正确	0.02	7.07
500	正确	0.02	6.05
700	正确	4	1.28

r_us	评估正确性	评估时延/s	跟踪误差估计 RMSE/m
0	正确	0.02	5.82
1	正确	0.02	9.78
10	正确	0.08	10.96
20	正确	0.85	11.11
30	正确	1.15	11.15
40	正确	1.83	11.17
50	正确	2.02	11.22
100	正确	2.62	11.28

导航比	评估正确性	评估时延/s	跟踪误差估计 RMSE/m
0.1	正确	4.07	11.31
0.5	正确	2.22	11.24
1	正确	0.40	11.00
2	正确	0.04	10.39
3	正确	0.04	9.84
4	正确	0.02	9.38
5	正确	0.02	9.03