基于FPGA的激光测距回波信号高速采集研究

摘要

In laser ranging, the very weak echo wave detecting is very important and difficult This paper mainly discusses the method of laser ranging receiving system. This ranging method applies to both the measurement of short distances and the long distance measurement At first, the paper introduced of the laser rangefinder principle, on the basis of this principle, highspeed signal processing capabilities with the FPGA, the design of a high-precision laser ranging receiving system, and the echo signal receiving and counting circuit module is designed.%在激光测距系统中,微弱回波信号的检测处理一直是一个难题.本文主要讨论了激光测距接收系统的实现方法,这种测距方法既适用于短距离的测量又适用于长距离的测量.首先介绍了脉冲式激光测距的原理,在此原理的基础上,结合FPGA的高速信号处理能力,设计了高精度激光测距接收系统,并设计了回波信号接收与计数电路模块.