Analysis of RCS Characteristics in Dynamic Flight of Stealth UAV

Dynamic flight measurement in range is an important method to obtain RCS (Radar Cross Section) data of flying targets under actual conditions such as meteorological environment, flying and tactical action conditions. To solve the lack of relevant standard methods and data processing standards for targets dynamic RCS measurement under the actual condition, the RCS data of a UAV (Unmanned Aerial Vehicle) is measured by a certain type of measuring radar, χ
²
distribution, Rice distribution and lognormal distribution three typical probability statistical models are used to analyze and process in different view of UAV and the RCS data probability distribution curve and statistical characteristic value are obtained. The results show that the χ
²
distribution can better fit the variation characteristics of the RCS of each part during the dynamic flight of the UAV, and support the evaluation of the stealth capability of a certain type of UAV.