| 摘要: |
| 作为一种特殊的有源干扰样式，高重频脉冲可有效压制宽带接收机，实现对反辐射武器的干扰以保护雷达的安全。除了对导引头前端的信号处理过程产生干扰，高重频干扰同时会降低分选参数测量精度使反辐射武器无法锁定雷达辐射源。为明确其干扰机理，首先分析高重频脉冲信号特征，接着针对被动导引头分选参数测量过程研究了高重频脉冲的干扰机理，并结合导引头工作过程建立了干扰效能与脉冲参数之间的理论关系，最终进行了仿真分析。结果表明，高重频脉冲的频域特性及进入导引头后产生的类噪声效应是干扰作用的重要原因，加大干扰功率、提高重频是强化干扰效果的有效方法。 |
| 关键词: 被动导引头 高重频信号 信号分选 干扰机理 超外差接收机 比幅测向 |
| DOI：DOI:10.3969/j.issn.1672-2337.2020.01.017 |
| 分类号:TN973 |
| 基金项目: |
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| Research on Interference Mechanism of High PRF Pulses to Parameter Sorting of Seeker |
|
NAN Hao，PENG Shirui，WANG Guangxue，WANG Xiaoyan
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Air Force Early Warning Academy，Wuhan 430019，China
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| Abstract: |
| As a special active interference pattern，high pulse repetition frequency (PRF) pulses can suppress wide band receivers to achieve interference with anti radiation weapons. In addition to interfering with the signal processing of the front end，the high PRF pulses can also affect parameters，so that the passive seeker cannot lock target. To clarify the interference mechanism，on the basis of the analysis of the characteristics of high PRF signals，the interference mechanism of high PRF pulses is studied based on the measuring process of passive seeker sorting parameters. The theoretical relationship between the interference performance and pulse parameters is established and the simulation results are validated. The results show that the frequency domain characteristics of interference pulses and the noise like effect generated after entering the seeker are the important reasons for which the interference can work. Increasing interference power and PRF will strengthen the interference effect. |
| Key words: passive seeker high PRF signal signal sorting interference mechanism superheterodyne receiver amplitude comparison direction finding |
