一种用于MTD雷达的自适应定频设计方法

Design Method of Self-adaptive Fixed-frequency Used for MTD Radar

根据MTD雷达特点,设计了基于中频采样、可用于MTD雷达的自适应定频实现方法。该方法通过频谱分析,找出了宽带干扰频谱的凹点和凹区,然后控制雷达以最佳或准最佳的频率工作,达到抗广谱有源干扰的目的。描述了自适应定频基本原理,详细介绍了数据采集、频谱分析、频点选择和信息流程。该方法利用自身电路特点实现了自适应定频,不需要增加设备硬件,也不浪费时间资源,方法简单、实用。试验结果验证了设计的有效性。

According to the characteritics of MTD radar,a method to realize the self-adaptive fixed-frequency used for MTD radar based on the intermediate-frequency sampling was designed.The pit and concavity in wide-band disturbance frequency spectrum is found out with the method by spectrum analysis,and then the radar is controlled to work at optimal or quasi-optimal frequency to realize anti-interference.The basic principle of the self-adaptive fixed-frequency is described.The data acquisition,spectrum analysis,frequency selection and information procedure are introduced.The self-adaptive fixed-frequency is realized by using the available hardware.It doesn′t need to add equipment hardware and waste time of scanning,it′s simple and practical.The result of the experiment validates the efficiency of the design.