Simulation Of Environment Of Airborne Radar And Moving Target Detecting

Airborne radar with the feature of high height and far seeing plays an important role in modern warfare. The computer simulation of environment of airborne radar and moving target detecting are important questions in modern radar field.This thesis is based on the simulation of signal source for a radar signal processing machine the author participated in. Adopting PC machine as the hardware platform and MATLAB as the software platform, the environmental model of airborne radar is established firstly, including target echo,clutter and noise model. As emphasis, clutter model based on the simulation method of correlated video signal is introduced,and its simulated process is discussed in detail. The ground clutter for general pulse transmitted signal is produced, and it analyzes the characteristic of ground clutter by simulation.Clutter suppression is critical to airborne radar. This thesis begins with the detecting method presented in the project, several basic moving target detecting methods for airborne radar are introduced. For the sake of requirement of research on theory ulteriorly, the method of Space Time Adaptive Processing(STAP) is discussed. In the end, according as the characteristic of ground clutter of airborne radar, it adopts two kinds of the fixed reduced-rank methods of space time two-dimensional processing, detecting toward the data formated including clutter and target is processed. By simulation and comparison with the analysis on theory, the conclusion is that the methods are effective, and the analysis of detecting performance is done subsequently.