微波数据压缩及定标测试方法的研究OA北大核心CSTPCD

Since the volume of system echo data of space borne synthetic aperture radar(SAR)is too large to meet the transmission rate requirements between satellite-ground links,the threshold of echo data quantization compression is obtained according to max-lloyd quantization method and the concrete implementation method of adaptive quantization coding compression and decompression of space borne SAR data is proposed.The error in data compression and decompression of space borne SAR system is analyzed in detail with the ideal FMCW(frequency-modulated continuous-wave)signal as the transmission calibration signal.Moreover,according to the frame format of the compressed echo data of the radar system in the process of high-speed data transmission,the binary decoding and decompression operation are carried out on the radar echo data to obtain the real size of the data.Finally,by Matlab/GUI programming,a software demonstration system that can analyze,decode and decompress radar echo data is designed.By the design of human-computer interaction,the experimental results in the process of data processing are stored and displayed in the form of dat data,picture data and word document data.