超高速采样技术及其在远程超宽带雷达信号处理中的应用研究  

Research on Applications of High-Speed Sampling Technology and Its Remote UWB Radar Signals Processing

作　　者：李宛州[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《电子学报》2001年第7期940-942,共3页Acta Electronica Sinica

基　　金：国家自然科学基金 (No .60 0 82 0 0 1 )

摘　　要：为解决远程超宽带雷达信号直接采样问题 ,提出了 1Gsps超高速实时采样设计方案 ,采用全新的数据降频设计思想实现 1ns写入的并行存储器系统结构 .在考虑改善因子对A D动态范围要求时 ,论述了随机采样原理结合 ps级时间轴展宽技术实现 12位 5Gsps等价采样系统的设计方法 ,对宽频带雷达信号处理、数字存储示波器、频谱分析仪等领域有重要应用价值 ,提出的原理实际应用于高速数字存储示波器系统设计中 .In order to solve the problem of sampling remote UWB radar signals, a real-time sampling design plan based on 1Gsps ultra-speed sequences is proposed, which uses a new method for reducing the frequencies in all databases with the input of 1ns in a dual-memory system structure. When demanding for improvement factor on an A-D dynamic range has come out, the principle of random sampling with combination of ps timing on the time axis is exposed to increase the realization of technology in 12 units of 5Gsps design methods for sampling systems. This method gives a very high practical value to the UWB radar signals processing, digital oscilloscopes, frequency spectrum analyzers, etc, that exists among the theory and applications of high-speed digital oscilloscopes system designs.

关 键 词：雷达 信号处理 采样 随机采样 远程超宽带雷达 

分 类 号：TN957.51[电子电信—信号与信息处理]