介绍了一种利用信号自相关处理进行快速测频的方法，可以提高数字接收机的测频速度。文中对该方法测频原理进行了理论分析，并对其作了仿真，证明该方法是简单可行，文中还对该方法的性能进行了分析，表明其运算量少，运算速度快，这对数字接收机测频部分设计有一定的理论和实际意义。

A method which makes use of autorelation signal processing to realize fast frequency measurement is given, it can improve frequency measurement speed of digital receivers. Theoretical analyses on the principle and simulation results are also given. The results prove that the method is feasible. At the same time, performance of the method is analyzed in this article. As a result, the method has very little quantity of operation and high operation speed. It will be helpful to the design of frequency measurement devices of digital receivers and on both respects of theory and practice.

TN85