Research And Implementation Of Signal Processing Algorithm For Missle Digital Array Radar

Digital Array Radar can work in a variety of operating modes including single-issue singlereceipt(SISO),single-shot multi-receive(MISO)and multiple-multiple-receive(MIMO),with the flexibility of its working mode,digital Array radar systems can be combined with phased array technology and MIMO technology,and complement each other's advantages for various complex work scenarios.In recent years,the integrated seeker technology for missile-based multi-target search/tracking/seeking based on all-digital array radar is gradually moving from theoretical research to practical engineering applications.This paper studies the algorithm and implementation of the signal processing algorithm for the missileborne digital array radar.The main work is as follows:1.From the basic working principle of digital array radar technology,the radar target echo model under each working mode is constructed,and the signal processing algorithms under various echo models are realized.Aiming at the sidelobe suppression interference and the towed decoy interference released by the electronic warfare aircraft,the subarray-based anti-primary sidelobe interference technology in phased array mode is studied,and the subsequent missile-borne digital array radar signal processing algorithm is implemented in FPGA.Real-time implementation provides theoretical support.2.Starting from the FPGA development platform,the advanced synthesis technology of FPGA based on System Generator and HLS is studied.Combined with the actual radar system,this technology is used to quickly build and verify the orthogonal digital down conversion,phased array static beamforming,pulse compression,MIMO.Joint processing of beamforming and matched filter banks,LCMV-based adaptive antisidelobe interference,and other real-time signal processing modules for missile-borne digital array radar.3.Combining the missile-mounted digital array antenna,the sub-array-based pattern design is analyzed.The processing flow of the missile-borne digital array radar signal processing in phased array mode and MIMO mode is analyzed.The project based on MALAB GUI is developed.The digital array radar signal processing software(including the host computer)is used to demonstrate and analyze the whole process of signal processing.Finally,an intermediate frequency analog multi-channel digital array radar experimental test platform is built.The multi-channel radar target signal echo simulator is used to generate the test excitation source,and the FPGA+DSP parallel processing architecture hardware platform is experimentally verified to realize the missile multichannel digital Real-time signal processing of array radar systems.