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为实现超高速宽频带信号采样 ,研究了随机采样在宽频带雷达、数字存储示波器、频谱分析仪等现代仪器设计领域的应用方法。首次明确给出了等价采样与随机采样的定义 ,提出了随机采样原理应用于远程超宽带雷达信号采样系统的新思想 ,探索远程超宽带雷达的大时宽带宽积信号的一种新处理方法 ,在信息传送数据量允许的情况下 ,较传统的脉冲数据压缩方法简单且可靠。提出的原理实际应用于高速数字存储示波器系统设计中 ,以 2× 10 8s- 1 的 A - D转换器HI12 76达成了 2× 10 1 0 s- 1 的等价采样速率。
In order to realize ultra-high speed broadband signal sampling, the application of random sampling in the field of modern instrument design, such as wideband radar, digital storage oscilloscope and spectrum analyzer, is studied. For the first time, the definitions of equivalent sampling and random sampling are given clearly. A new idea of applying random sampling principle to long-range ultra-wideband radar signal sampling system is proposed. A new processing method for large-time and wide-bandwidth signal of long- , In the case of the amount of information transmission data permit, the more traditional pulse data compression method is simple and reliable. The proposed principle is actually applied to the design of high speed digital storage oscilloscope system. The equivalent sampling rate of 2 × 10 1 s -1 is reached with 2 × 10 8 s -1 A / D converter HI12 76.