摘要
介绍一种２５０ＭＳＰＳ数据采集存储卡及其与计算机接口电路的工作原理、设计思想，以及在雷达回波信号采集系统中的应用．系统采用了多路合成方案，以实现多路低速Ａ／Ｄ合成一路高速Ａ／Ｄ，从而减小了电路实现难度，提高了系统工作的可靠性．通过采用内存直接映射的接口方案，实现了采集扩展存储器在高速数据采集卡和计算机间的共享，从而完成高速采样数据向计算机的传输．
The performing principle and implementation of a 250MSPS acquisition system and its application in Radar signal data acquisition is analyzed. The system adopts the scheme of multi channal synthesis reducing the difficulty of the circuit implementation and increases the stability of system. The interface method of direct memory map is also applied for purposes of realizing the sharing of the extended acquisition data memory between high speed data acquisition card and computer. The system performance and its adjustment are analyzed theoretically.
出处
《华中理工大学学报》
CSCD
北大核心
1999年第3期69-71,94,共4页
Journal of Huazhong University of Science and Technology
基金
中国航天工业总公司资助
