Target Recognition System In The Dsp-based Millimeter-wave Radiation

This thesis takes the application of microwave radiator in military as research background. At the beginning, the detecting theory of microwave radiator and the mathematical construction approach for output signal are studied, taking fuzzy set theory into consideration, the feature extraction method which is adapt to microwave radiator is developed. Then the double scanning recognition sketch based on the one dimensional wave in time field is determined for the concrete system. Moreover the output signal of the microwave array detecting system is also analyzed. Finally the application of data fusion theory based on D-S case theory in microwave array detecting system target recognition is roughly discussed.Corresponding to the concrete engineering application, Based on DSP, a high-speed signal processing system, which is developed with purpose of the real-time of signal processing is presented in this paper. In the hardware circuit, sequential communication circuit between DSP and PC, A/D data extracting circuit, the electrical source, clock, reset circuit of DSP, and the FLASH, JTAG circuit, etc. are integrated. As for the software its major function is to recognize the detecting target, thus the extracted signal will be firstly preprocessed, then the primary feature value of the signal will be computed out, and at last the template matching algorithm will be used to identify and recognize the target. In conclusion, there are two dominant advantages of this system, one is real-time, which is assured by the high executing speed of the hardware and the algorithm code optimization of the software, the other advantage is its high integration, small volume, and low energy consume, which are realized by the integration of the signal extracting circuit, the sequential communication circuit and the DSP circuit in the system.