微波数据压缩及定标测试方法的研究  

Research on method for microwave data compression and calibration test

作　　者：邵泽龙 SHAO Zelong(Shanghai Institute of Special Equipment Inspection and Technical Research,Shanghai 200062,China;Shanghai Engineering Research Center of Pressure Pipeline Intelligent Inspection,Shanghai 200062,China)

机构地区：[1]上海市特种设备监督检验技术研究院,上海200062 [2]上海压力管道智能检测工程技术研究中心,上海200062

出　　处：《现代电子技术》2024年第9期11-15,共5页Modern Electronics Technique

基　　金：上海市特种设备监督检验技术研究院一般项目(2024⁃04Y)。

摘　　要：针对星载合成孔径雷达系统回波数据容量大、难以满足星地链路间传输速率要求的问题,根据max⁃lloyd量化方法获得了回波数据量化压缩的门限,提出星载SAR数据自适应量化编码压缩和解压缩的具体实现方法。同时,以理想调频连续波信号为发射定标信号,对星载合成孔径雷达系统数据压缩及解压缩过程中的误差进行了详细的分析,并且根据雷达系统压缩后的回波数据在数据高速传输过程中的帧格式,对雷达回波数据进行了二进制的解码及解压缩操作,获得了数据的真实大小。最后,通过Matlab/GUI编程设计了能够对雷达回波数据进行定标分析、解码及解压缩的软件演示系统。通过人机交互的设计,将数据处理过程中的实验结果以dat数据、图片数据和word文档数据等形式进行了存储和显示。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.

关 键 词：星载数据 合成孔径雷达 分块自适应量化 数据压缩 定标分析 软件设计 

分 类 号：TN919-34[电子电信—通信与信息系统]