3 . make a study on multi-parameter sorting method for radar signal, which uses the parameter including pri, pw, rf and doa . discuss the method ’ s flow, thought, arithmetic and simulation . make an emphasis on improving fast pri sorting arithmetic which can satisfy the real time requirement 3.对雷达多参数联合分选方法进行了详细的研究,详细的讨论了分选的流程,思想,算法,和仿真实现,并提出了一种改进的雷达主分选算法,大大缩短了分选的时间,基本能够满足实时的分选要求。