海洋回波模拟与定标

Simulation and Calibration of Ocean Echo

根据雷达探测的原理 ,利用超声延时线对高频地波雷达射频信号延时一个固定时间的方法 ,实现了对探测目标距离的模拟 .并根据模拟回波信号中包含有相应的多谱勒谱的信息 ,模拟了海流的流速 .该模拟海洋回波信号可以模拟 5 6 .7km距离的雷达回波 ,可以模拟流速为 5 5 ,5 .5 ,2 .75 cm / s的海流 ,解决了高频地波雷达的实验室调测和定标 。

In order to debug and calibrate high frequency ground radar in laboratory, simulation of ocean echo is needed. Base on the principle of radar detection, the distance of detected target can be simulated by using ultrasonic delay line to delay RF signal of high frequency ground radar a special time. According to Doppler theory, simulated echo signal comprise the corresponding Doppler Spectrum, then ocean current velocity can be simulated.