杂波背景下机载雷达信号参数的射频隐身优化

doi:10.12305/j.issn.1001-506X.2021.11.19

系统工程与电子技术 ›› 2021, Vol. 43 ›› Issue (11): 3194-3201.doi: 10.12305/j.issn.1001-506X.2021.11.19

杂波背景下机载雷达信号参数的射频隐身优化

于伟强¹, 汪飞^1,*, 孙萍¹, 周建江¹, 陈军²

1. 南京航空航天大学雷达成像与微波光子教育部重点实验室, 江苏南京 211106
2. 南京信息工程大学电子与信息工程学院, 江苏南京 210044

收稿日期:2020-08-22 出版日期:2021-11-01 发布日期:2021-11-12
通讯作者: 汪飞
作者简介:于伟强(1996—), 男, 硕士研究生, 主要研究方向为飞机射频隐身技术与目标检测|汪飞(1976—), 男, 副教授, 博士, 主要研究方向为飞机射频隐身技术与微弱信号检测|孙萍(1997—), 女, 硕士研究生, 主要研究方向为飞机射频隐身技术与目标识别|周建江(1962—), 男, 教授, 博士, 主要研究方向为机载电子信息系统与雷达目标识别|陈军(1988—), 男, 讲师, 博士, 主要研究方向为飞机射频隐身技术与目标跟踪
基金资助:
国家自然科学基金(61801212);江苏省自然科学基金(BK20190772);航空科学基金(2017ZC52036)

RF stealth optimization of airborne radar signal parametersunder clutter background

Weiqiang YU¹, Fei WANG^1,*, Ping SUN¹, Jianjiang ZHOU¹, Jun CHEN²

1. Key Laboratory of Radar Imaging and Microwave Photonics Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
2. School of Electronics and Information Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China

Received:2020-08-22 Online:2021-11-01 Published:2021-11-12
Contact: Fei WANG

摘要/Abstract

摘要：

面对对方先进的无源探测系统, 射频(radio frequency, RF)隐身是机载雷达抗干扰的一种重要手段。本文首先分析了杂波条件下机载雷达目标探测的RF隐身目标模型, 然后分别针对地杂波与海杂波背景, 以截获因子作为RF隐身性能评估指标, 分析了基于脉冲对消滤波与恒虚警(constant false alarm rate，CFAR)检测技术的机载雷达RF隐身设计方法, 并建立了相应的机载雷达信号参数RF隐身优化模型。仿真利用遗传算法对模型中的辐射功率、驻留时间与脉冲累积个数等机载雷达信号的关键参数进行求解, 仿真结果表明, 两种杂波背景下的信号参数优化模型均能有效地改善机载雷达的RF隐身性能。

关键词: 射频隐身, 地杂波, 海杂波, 脉冲对消, 恒虚警检测

Abstract:

In the face of the opponent's advanced passive detection system, radio frequency (RF) stealth is an important means of anti-jamming for airborne radar. This paper first analyzes the RF stealth target model for airborne radar target detection under clutter conditions.Then, under the background of ground clutter and sea clutter, the RF stealth parameter design method of airborne radar based on the technologies of pulse cancellation filtering and constant false alarm rate (CFAR) detection is analyzed with intercept factor as the performance evaluation index of RF stealth, and the corresponding RF stealth optimization model of airborne radar signal parameters is established.The simulation uses genetic algorithm to solve the key parameters of the airborne radar signal such as radiation power, dwell time and cumulative number of pulses in the model. The simulation results show that the signal parameter optimization model under the two kinds of clutter background can effectively improve the RF stealth performance of airborne radar.

Key words: radio frequency (RF) stealth, ground clutter, sea clutter, pulse cancellation, constant false alarm rate (CFAR) detection

中图分类号:

TN957.51

于伟强, 汪飞, 孙萍, 周建江, 陈军. 杂波背景下机载雷达信号参数的射频隐身优化[J]. 系统工程与电子技术, 2021, 43(11): 3194-3201.

Weiqiang YU, Fei WANG, Ping SUN, Jianjiang ZHOU, Jun CHEN. RF stealth optimization of airborne radar signal parametersunder clutter background[J]. Systems Engineering and Electronics, 2021, 43(11): 3194-3201.

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参考文献 26

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参数	取值范围
P_T/dBw	0~37
τ/μs	1~100
N	1~1 000
G_T/dB	0~35
τ_b/μs	0.01~1

参数	取值范围
R_Dmin/km	41~150
T_dmax/s	0~4
σ⁰/dB	-31~-16
σ_t/m²	0.1~50

参数	取值范围
R_Dmin/km	41~180
T_dmin/s	0~4
σ⁰/dB	-35~-22
σ_t/m²	1 000~10 000

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杂波背景下机载雷达信号参数的射频隐身优化

RF stealth optimization of airborne radar signal parametersunder clutter background

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