分布式间歇采样转发信号对机载干涉仪参数测量影响分析

王英甫; 殷加鹏; 卢中昊; 庞晨; 胡卫东

doi:10.12000/JR24090

分布式间歇采样转发信号对机载干涉仪参数测量影响分析

DOI: 10.12000/JR24090 CSTR: 32380.14.JR24090

1.
国防科技大学电子信息系统复杂电磁环境效应国家重点实验室长沙 410073
2.
国防科技大学自动目标识别国家重点实验室长沙 410073

基金项目: 国家部委基金

详细信息

作者简介:
王英甫，硕士生，主要研究方向为波形对抗技术

殷加鹏，博士，副研究员，硕士生导师，主要研究方向为极化雷达信号处理、波形对抗技术

卢中昊，博士，副教授，硕士生导师，主要研究方向为天线及微波器件设计、电磁兼容与电磁防护

庞　晨，博士，副研究员，硕士生导师，主要研究方向为极化信息处理、雷达目标分辨与识别技术

胡卫东，博士，教授，博士生导师，主要研究方向为雷达信息处理与目标识别、多源信息融合

通讯作者:
殷加鹏 yinjiapeng@nudt.edu.cn

责任主编：崔国龙 Corresponding Editor: CUI Guolong
中图分类号: TN972
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出版历程
- 收稿日期: 2024-05-16
- 修回日期: 2024-06-20
- 网络出版日期: 2024-07-05
- 刊出日期: 2024-09-28

Analysis of the Influence of Distributed Interrupted-sampling Repeating Signals on Airborne Interferometer Parameter Measurements

1.
State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, National University of Defense Technology, Changsha 410073, China
2.
State Key Laboratory of Automatic Target Recognition, National University of Defense Technology, Changsha 410073, China

Funds: The National Ministries Foundation

More Information

Corresponding author: YIN Jiapeng, yinjiapeng@nudt.edu.cn

摘要

摘要: 针对反机载干涉仪侦察场景，该文提出一种基于间歇采样转发技术生成分布式信号对干涉仪参数测量施加干扰的方法。辐射源与转发干扰机分布部署构成干扰系统，转发干扰机对辐射源脉冲信号进行间歇采样并向干涉仪转发，转发信号与辐射源信号准同步到达干涉仪，实现对干涉仪空域参数和时域参数的同时干扰。对于机载干涉仪运动过程中与干扰系统发生的位置关系变化，给出信号准同步约束并构建分布式信号叠加模型。然后针对干涉仪体制对脉冲空域和时域参数的测量机理，分析分布式信号实施干扰的原理，并分析信号参数对干扰效果的影响，进而提出分布式信号设计原则。仿真实验和暗室实验结果表明，该文所提出分布式波形可有效扰乱干涉仪对信号到达方位角、脉宽和脉冲重复周期等空时域参数的正确测量。
- 间歇采样转发干扰 /
- 准同步信号 /
- 机载干涉仪 /
- 分布式信号 /
- 空域-时域联合干扰
Abstract: In the context of counter-reconnaissance against airborne interferometers, this study proposes a jamming method designed to disrupt the parameter measurement capabilities of interferometers by generating distributed signals based on an interrupted-sampling repeating technique. An emitter and a transmitting jammer are combined to form a distributed jamming system. The transmitting jammer samples the emitter signal and transmits the repeating signal to an interferometer. A quasi-synchronization constraint is established according to the change in the positional relation between the airborne interferometer and the jamming system. Additionally, a model for the superposition of distributed signals is provided. Then, the mathematical principle underlying distributed signal jamming is expounded according to the pulse spatial and temporal parameter measurement using the interferometer system. Moreover, the influence of various signal parameters on the jamming effect is analyzed to propose a principle for distributed signal design. Simulation and darkroom experiments show that the proposed method can effectively disrupt the accurate measurement of the pulse spatial domain and time domain parameters, such as azimuth-of-arrival, pulse width, and repetition interval.
- Interrupted-Sampling Repeater Jamming (ISRJ) /
- Quasi-synchronization signal /
- Airborne interferometer /
- Distributed signal /
- Joint spatial-temporal interference

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图 1 干涉仪运动过程中辐射源和转发干扰机信号传播路径变化

Figure 1. Changes of the signal propagation path of radiation source and jammer during interferometer movement

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图 2 不同转发样式原理示意图

Figure 2. Schematic diagram of different repeater styles

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图 3 间歇采样重复转发示意图

Figure 3. Schematic of interrupted-sampling repetitive repeater jamming

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图 4 分布式信号叠加示意图

Figure 4. Schematic diagram of distributed signals superposition

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图 5 信号相位差、功率比对角度测量影响分析

Figure 5. Analysis of phase difference and SIR between two signals

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图 6 信号夹角对角度测量影响分析

Figure 6. Analysis of included angle between two signals

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图 7 仿真实验场景图

Figure 7. Simulation experiment scene

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图 8 分布式波形特性

Figure 8. Properties of distributed signals

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图 9 空域参数干扰仿真

Figure 9. Simulation of spatial domain parameter interference

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图 10 间歇采样转发对测脉宽干扰

Figure 10. Interference of ISRJ on pulse width measurement

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图 11 测量脉宽统计直方图

Figure 11. Histogram of pulse width measurement

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图 12 测量脉冲PRI直方图

Figure 12. Difference histogram for PRI measurement

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图 13 暗室实验场景设置

Figure 13. Darkroom experiment scene setting

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表 1 辐射源参数

Table 1. Parameters of the radiation source

参数	数值
发射功率(kW)	200
工作频率(GHz)	10
码片宽度(μs)	0.1
码片个数	64
脉宽(μs)	6.4
重复周期(μs)	32

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表 2 转发干扰机参数

Table 2. Parameters of the transmitter

参数	数值
发射功率(kW)	150
采样长度(μs)	0.8
重复转发次数	2
采样次数	4

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表 3 干涉仪对不同信号测量结果

Table 3. Results of different signals measured by the interferometer

信号	幅度(dBm)		到达方位角(°)		脉宽(μs)
信号	单脉冲	统计值	单脉冲	统计值	单脉冲	统计值
仅辐射源信号	–76.4600	–75.7	39.5862	39.5	4.94691	5.0
	–76.0225		39.9849		4.94691
	–75.7725		39.8660		4.94691
	–75.7725		39.4743		5.06692
	–75.7725		39.2365		5.01358
仅转发信号	–72.4600	–72.5	–22.5355	–22.5	9.96050	10.0
	–72.6475		–22.6194		10.02720
	–72.4600		–22.5985		10.01380
	–72.3350		–23.0321		9.97383
	–72.3350		–22.6684		10.00050
合成信号1	–68.6475	–68.7	29.1440	29.0	10.3472	10.0
	–68.6475		29.2559		10.2805
	–68.7725		29.2419		10.3205
	–68.6475		29.5427		10.2538
	–68.8350		29.3608		10.0672
合成信号2	–70.3975	–70.0	27.4095	27.0	10.4139	10.0
	–70.3350		26.3464		10.1472
	–70.2100		27.1926		10.1338
	–70.3350		26.8919		10.0538
	–69.9600		27.1507		10.0938

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