Abstract: For improving the radar performance of various modern radars, such as ground-based radar, ship-borne radar, airborne radar and satellite-borne radar, the rates of signal processing and data processing should be greatly improved. Currently, the massive COTS parallel processors are adopted at home and abroad. Among these processors, MP-2 developed by USA is emphatically presented in this paper, because of its successful application in GBR of US THAAD and NMD. The application and development of parallel processors in airborne and satellite-borne radars both at home and abroad are also introuduced.