为实现某多通道雷达接收机,设计了一种带数据预处理功能的八通道数据采集系统,其具备LINK口和CPCI总线两种高速输出接口,单通道最高采样频率为125 MHz,分辨率14 bit.讨论了系统硬件解决方案和软件逻辑实现,实测结果表明该系统有效位数高达9.9 bit,通道延时差为40 ps,已成功运用于某雷达接收机.

An eight-channel data acquisition system with data preprocessing function is designed for a multi-channel radar receiver. There are two kinds of high-speed output interface which are LINK port and CPCI bus. Sampling rate of its single channel is up to 125 MHz and the resolution is 14 bits. Hardware and software implementation is discussed in detail. Experiment results show that the effective number of bits is up to 9.9 bits and time delay difference is 40 ps. It has already been used in a certain radar rece...

TP274.2