引言微波接收机设计中的一个重要参数是接收机的灵敏度。它有多种定义,最常用的一种是正切灵敏度。正切灵敏度很容易测得,计算也简单。然而,正切灵敏度不能给出有关微波接收机工作灵敏度的足够信息,而工作灵敏度可提供有关探测概率的必要信息并能表示出虚警概率。有数篇文章2～5讨论了雷达接收机的工 Introduction An important parameter in the design of a microwave receiver is the receiver’s sensitivity. It has a variety of definitions, the most common one is the tangential sensitivity. Tangential sensitivity is easy to measure, the calculation is simple. However, the tangential sensitivity does not give enough information about the operating sensitivity of the microwave receiver, and the operational sensitivity provides the necessary information about the probabilities of probing and can indicate the false alarm probability. Several articles 2 to 5 discuss the work of radar receivers