中文摘要：

为精确地测量煤矿探水雷达的发射机与接收机之间同步时钟信号的时间差,设计和实现了基于FPGA的高精度同步时钟信号时间差测量系统.提出了一种利用脉冲计数法和量化延时法相结合的精密测量新方法,最高分辨率为200 ps.测试和实验结果表明,该系统能够精确地测量同步时钟信号的时间差,并能让时间差在LCD上显示,进行存储和在上位机上绘制曲线,该系统对同步时钟信号的时间差进行矫正起了很大的作用,已经用于煤矿探水雷达同步时钟信号的测量中.

英文摘要：

To accurate measuring the clock synchronization signal time difference in coal mine water detecting radar transmitter and receiver,the paper designs and implements a high precision synchronous clock signal time difference measurement system which is based on FPGA.The system uses a new way of employing the D flip-flop and delay unit-lcell in FPGA to measure the synchronous clock signal time difference.The highest resolution is 200 ps.Test and the experimental results show that the system can accurately measure the synchronous clock signal time difference.The time difference are stored and displayed on the LCD,it plays a big role in time difference correction.The system has applied to measurement synchronous clock signal in coal mine water detecting radar.