Based On Short-range Target Detection Radar Technology

Active defense system is important in military. Near range target detection radar is the key technology of active defense system. To find the best waveform of the near range target detection radar and to suppress glint, improve angle measuring accuracy and improve guidance radar's tracking and guiding accuracy, is the main problem to solve in this paper. The theory and some applicational technologies about near range target detection radar, including kinds of waveform designing, glint simulation, glint suppressing, target tracking with glint, are discussed in detail. The main work is outlined as follows:Firstly, the background, significance, history and status in short-range active defense system and the main work of this paper are introduced. As followed, the waveform design of near range target detection radar are studied in detail. Computer simulation verifies the performance of Golay code is the best. And then, the glint simulation is studied. the feasibility simulation using multiple scattering centers target model and statistical model is studied in detail. Finally, the method of glint suppressing is discussed. In one side, the theories and technologies of suppressing glint measuring accuracy for frequency agility radar are studied. Frequency agility technique can get rid of the relativity between border upon echo pulses, and angle glint is suppressed effectively. Then, a study on glint suppressing algorithm is performed based on amplitude weighting. Performance comparison under different amplitude weighting is made and the optimization of square amplitude weighting is proved. Another side, the study is performed on the application of particle filter and EKF for tracking with glint noise. The simulation result shows that the particle filter algorithm can suppress glint and solve non-Gaussian maneuver targeting tracking problem primely.