本文介绍了一种适用于舰船航行速度测试的微波多普勒雷达方案。本方案采用连续波发射,零中频接收,使得组件前端电路简易,信号处理简单,并且采用IQ正交双通道接收机方式保留了目标运动方向信息。另外,利用加速度测量芯片跟踪舰船由于海浪起伏引起的天线角度变化,从而可以精确测量舰船的即时水平行进速度。 This paper presents a microwave Doppler radar scheme suitable for ship sailing speed testing. The program uses continuous wave transmission, zero IF receiver, making the front-end components of the circuit simple, simple signal processing, and the use of IQ quadrature dual-channel receiver retains the target direction of motion information. In addition, the use of acceleration measurement chip to track the ship due to fluctuations in the antenna angle changes, which can accurately measure the ship’s instantaneous horizontal speed.