| Two dimension DOA(Direction of Arrival) estimation is a hotspot of research in the recent decades. The MUSIC algorithm has excellent performance on signal distinguish ,commonly used in processing disrelated signals, while ML algorithm used in processing related signals. The system mensioned in the text applicate in estimating two-dimension DOA. For assure its real-time capability directly use MUSIC algorithm to process disrelated signal;use ML algorithm plus AP(Alternating Projection) algorithm to process related signals. In hardware side:applicate high-performance DSP(Digital Signal Processor) processing data to accelerate processing speed. This text introduced space-spectra-estimation's basic theory and its development.Introduced and analysed the MUSIC algorithm,ML algorithm and AP algorithm used in DOA estimation. Introduced the DSP chip used in building the hardware platform,and the debug tools such as Evaluator and EZ-KIT lite ect. Simply introduced the software PROTEL99se used in circuit design.Applicate the design tool designed and achieved the DOA estimation system.In actual circuit design,considered signal's mutual electromagnetic interfere,and try best to reduced its affects in the side of board-layer design, layout ect.. For the convenience of debug,hardware platform use MAX232 to connect to computer,to scout the program's runing and outputs. After the achievement of hardware platform's building,unite debug the platform and software used the emulator and EZKIT lite ect. tools. Detected some hardware and software problems.Through continuous experiment ,solved these problems, Reached the system's technic target. |
