半主动导引头快速数字化雷达误差提取方法

A Fast Method for Semi-active Radar Seeker to Extract the Angle Errors

伴随着数字化导引头技术的发展,传统的模拟半主动雷达导引头逐渐被淘汰,取而代之的是数字化半主动雷达导引头,然而传统的数字化半主动雷达导引头,在进行比幅和差单脉冲测角时,需要对和差差三通道中频信号进行FFT处理和恒虚警处理,占用的处理时间较长,应用需求较高。本文提出的方法,参考模拟导引头的雷达误差提取方式,通过数字化的方法,对和差差三通道数据进行幅度和相位的提取,实现雷达误差的快速提取,可以应用于对实时性要求高、照射频次快的间断照射半主动雷达导引头。

The digital semi-active seeker has replaced the traditional analog semi-active seeker with the development of the technology of digital seeker.It will cost a long time when the traditional digital semi-active seeker extracts angle errors by using the sum-difference amplitude-comparison monopulse angle measurement,because of that the three way intermediate frequency signals must be handled with FFT and CFAR processing.A fast calculation method for digital semi-active radar seeker to reduce the processing time of angle errors extracted is presented,which refers to the analog system.So it can be applied for the semi-active seeker which is working with a fast irradiation.