Based On Sigma-delta-of Stap Clutter Adaptive Suppression Techniques And Parallel Dsp Research

This dissertation develops research work for some fields in which ground cluttersuppression algorithm may be used for airborne phased-array fire-control radar,software design of PC-Σ△-STAP algorithm based on Σ△-STAP algorithm iscompleted for clutter suppression realtime processing system based on ADSP21160chip. The main work in this dissertation can be summarized as follows:1. Analyzes the the distribution characteristics of ground clutter returns in airborne phased-array fire-control radar, and constructs the airborne phased-array fire-control radar main-lobe returns model .2. Summarizes the main methods of airborne radar clutter suppression , analyzes their performance and characteristics and does much simulating.3. Summarizes two Σ△-STAP methods of airborne radar clutter suppression , analyzes their performance and characteristics and does much simulating.4. Chooses PC-Σ△-STAP method as the study object for airborne phased-array fire-control realtime processing radar system with these methods'characteristics.5. Researches the parallel arithmetic of mass DSPs, researches and chooses a method for the inverse of low class and high density matrix, and researches the characteristics of two core processing of ADSP21160.The PC-Σ△-STAP algorithm is realized in realtime processing system of a board mainly comprising of 4 ADSP21160 DSP chips, with well effect, by designing high efficient parallel procession algorithm , reasonable program structure and program timing, using just method for inverse matrix, and bringing the two core to bear.6. Researches ADSP-TS101'realtime processing performance for PC-Σ△-STAP, and analyzes ADSP-TS201'realtime processing performance for PC-Σ△-STAP.