为解决航海雷达运用多卜勒技术所负担的高造价的问题,提出了一种新的测速方法,这种方法基于多卜勒效应的利用,其核心是捕获多卜勒频率.该方法利用了功率谱密度和频率的对应关系,同时也利用了现有航海雷达信号检测已较为成熟之处.并设计了系统框图,分析了这种新方法的方便性和优越性.最后对该方法进行了验证计算,从中可看出,此种方法是一种简单可行的方法. In order to solve the problem of high cost borne by Doppler radar, a new speed measurement method based on the use of Doppler effect and its core is to capture the Doppler frequency, Power spectral density and frequency of the corresponding relationship, but also to take advantage of the existing navigation radar signal detection has matured. And the design of the system block diagram, analysis of the convenience and superiority of this new method.Finally, the method was carried out Verification calculation, from which we can see that this method is a simple and feasible method.