The probability of target detection

The paper deals with the most interesting problem of the probability of radar target detection. In this paper there are derived probability relations of radar target detection in a covered radar zone for a single-frequency and double-frequency radar sensors. The starting point of the analyses is fluctuations of radar cross section. The Swerling theory has been used. In this paper there is an execution and mutual comparison of two types of radar sensors from the point of view of target detection, which confirm advantages of usage of a double-frequency radar sensor. The range detection of double-frequency radar sensor is doubled.