| 用于超宽带信号数据采集的高精度可编程定时器研究 |
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| 引用本文： | 苏红旗,杨峰,马凯,康文献.用于超宽带信号数据采集的高精度可编程定时器研究[J].应用地球物理,2005,2(2):127-130,F0003. |
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| 作者姓名： | 苏红旗 杨峰 马凯 康文献 |
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| 作者单位： | [1]中国矿业大学（北京）,100083 [2]豫中地质勘察工程公司郑州基础分公司,450001 |
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| 基金项目： | This research is sponsored by National Natural Science Foundation of China,Special Fund of Scientific Instruments：The study and development of flameproof ground penetrating radar （50127402）. |
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| 摘 要： | 超宽带信号的数字化在很大程度上取决于采样时刻的准确性，因此是否具有高精度的可编程定时器是实现超宽带信号数据采集的关键。本文基于斜波发生器原理实现了高精度可编程定时电路，可编程计数范围为16bit，实际最小定时单位达8ps，折合采样频率高达50GHz，迄今为止尚未有关于同样指标产品的报道。该定时器已应用于作者研制的地质雷达信号数据采集系统中，取得了很好的实际应用效果。
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| 关 键 词： | 斜波发生器 高精度可编程定时电路 地质雷达信号 数据采集系统 数字化 |
| 收稿时间： | 2004-12-03 |
| 修稿时间： | 2004-12-032005-01-04 |
Research on high-accuracy programmable timer used in acquiring UWB signals |
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| Su?Hongqi,Yang?Feng,Ma?Kai,Kang?Wenxian.Research on high-accuracy programmable timer used in acquiring UWB signals[J].Applied Geophysics,2005,2(2):127-130,F0003. |
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| Authors: | Su Hongqi Yang Feng Ma Kai Kang Wenxian |
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| Institution: | (1) China University of Mining Technology, 100083 Beijing, China;(2) Project Company of Henan Yuzhong Geology Explore, 450001 Zhengzhou, China |
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| Abstract: | UWB signal digitization depends, to a large extent, on the accuracy of sampling time. A highaccuracy programmable timer is therefore the key to implementing UWB signal data acquisition. A high-accuracy programmable timer based on the principle of ramp generators is described in this paper. The counting range of the timer is up to 16 bits, the timing precision is 8 ps, and the equivalent sampling rate is up to 50G Hz. No other identical product has been reported so far. This timer was successfully used in the data acquisition system for geological radar signals developed by us. |
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| Keywords: | high-accuracy timing UWB signal data acquisition and ramp generator |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
