对瞬时测频干扰机理的研究  

Research on Jamming Mechanism of Instantaneous Frequency Measurement

作　　者：王磊[1] 王洪雷 王洪迅[1] 林鑫淼 熊梓翔 WANG Lei;WANG Honglei;WANG Hongxun;LIN Xinmiao;XIONG Zixiang(Aero&Astronautics Engineering School,AFEU,Xi′an 710038,China;PLA 93149 Troops,Jiuquan 735000,China)

机构地区：[1]空军工程大学航空工程学院,陕西西安710038 [2]中国人民解放军93149部队,甘肃酒泉735000

出　　处：《现代防御技术》2024年第3期128-136,共9页Modern Defence Technology

基　　金：国家青年科学基金项目(62006245)。

摘　　要：瞬时测频(instantaneous frequency measurement,IFM)接收机是电子侦察中非常重要的测频资源,其结构简单、灵敏度高、侦察频带宽、分辨率高,可以快速测定被测信号的频率,在现代电子战中得到广泛应用。基于IFM微波鉴相器在某一瞬间只能响应一个信号的特性,结合IFM工作原理,研究了一种新的(超过2个信号)对IFM干扰策略,并分析了干扰机理,通过模拟仿真对IFM的干扰效果进行了评估。仿真结果表明:多信号交叠可以对IFM系统产生明显的干扰效果,可以使得其无法测得正确频率,并错误地输出同时到达信号指示。IFM(instantaneous frequency measurement)system is an important reconnaissance resource in electronic reconnaissance.It can quickly determine the frequency of the signal to be measured,has good real-time performance,wide frequency range and high frequency resolution,and can also indicate the signals of simultaneous arrival in the case of multiple signals.It's very widely used.Based on the characteristic that IFM microwave phase discriminator can only respond to one signal at a certain instant,combining with the working principle of IFM,a new(more than 2 signals)interference strategy to IFM is investigated and the interference mechanism is analyzed,and the interference effect of IFM is evaluated through analog simulation.The simulation results show that the overlapping of multiple signals can produce obvious jamming effect on the IFM system,which can make it unable to measure the correct frequency,and the wrong output reaches the signal indication at the same time.

关 键 词：瞬时测频 同时到达信号 相位编码 干扰机理 反电子侦察 

分 类 号：TN973[电子电信—信号与信息处理] TP391.9[电子电信—信息与通信工程] TJ0[自动化与计算机技术—计算机应用技术]