推荐星级:
  • 1
  • 2
  • 3
  • 4
  • 5

基于FPGA与GPS的时间测量电路设计与实现

更新时间:2020-10-27 17:57:07 大小:1011K 上传用户:zhengdai查看TA发布的资源 标签:fpgagps 下载积分:1分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

资料介绍

为宇宙射线缪子(μ子)测量实验设计了基于FPGA的高精度时间-数字转换器(TDC),结合TDC测量值与GPS提供的标准时间(UTC)精确记录了粒子事件的时间信息。TDC采用粗计数+细时间测量相结合的方式,用计数器实现动态范围大于1s的粗时间测量;使用FPGA加法进位延时链构建时间内插完成了细时间测量,并借助Wave-Union与bin-by-bin方法提高时间分辨并改善非线性。实验室测试双边沿TDC的时间分辨为16.68ps,时间测量精度(RMS)好于45ps。测量结果表明,该TDC满足脉冲前沿时间甄别要求。

A time-to-digital convertor (TDC) based on field programmable gate array (FPGA) was designed for the cosmic ray μ measurement experiment. The high-precision time provided by TDC and a coordinated universal time (UTC) timestamp from GPS were used to make an accurate record of particle event. The method combining a coarse counter with a dynamic range larger than 1 s and a fine time interpolation based on FPGA carry-in delay chain was adopted in the TDC. The Wave-Union method and bin-by-bin method were used to improve the time resolution and linearity. The measurement results show that the time resolution of a double-edge TDC is 16.68 ps, the time measurement accuracy (RMS) is better than 45 ps, and TDC is sufficient for the pulse leading edge time discrimination.

部分文件列表

文件名 大小
基于FPGA与GPS的时间测量电路设计与实现.pdf 1011K

全部评论(0)

暂无评论

上传资源 上传优质资源有赏金

  • 打赏
  • 30日榜单

推荐下载