| 高精度激光脉冲测距双阈过零时刻甄别技术研究 |
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| 引用本文： | 黄民双,任晓东,唐建.高精度激光脉冲测距双阈过零时刻甄别技术研究[J].北京石油化工学院学报,2009,17(3):39-42. |
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| 作者姓名： | 黄民双 任晓东 唐建 |
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| 作者单位： | 北京石油化工学院,光机电装备技术北京市重点实验室,北京,102617;北京石油化工学院,光机电装备技术北京市重点实验室,北京,102617;北京化工大学,北京,100029 |
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| 基金项目： | 光机电装备技术北京市重点实验室开放课题资助项目;项目号:KF2007-02 |
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| 摘 要： | 在高精度激光脉冲测距中，为了消除激光回波信号幅度变化带来的定时误差，提出了采用双阈过零时刻甄别技术。分析了准高斯激光脉冲通过有源CR微分电路成形为双极性脉冲后，微分过零点与激光脉冲的峰位之间的对应关系。设计了由带锁定功能的高速比较器AD96687等芯片组成的高精度双阈过零甄别电路，对电路进行了误差分析，给出了提高精度的措施。实验结果表明：定时精度优于67ps。
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| 关 键 词： | 激光脉冲测距 准高斯脉冲 有源CR微分 过零时刻甄别 |
Research of Double Threshold Zero-crossing Time Discriminating Technology in High Precision Laser Pulsed Ranging |
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| Huang Minshuang,Ren Xiaodong,Tang Jian.Research of Double Threshold Zero-crossing Time Discriminating Technology in High Precision Laser Pulsed Ranging[J].Journal of Beijing Institute of Petro-Chemical Technology,2009,17(3):39-42. |
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| Authors: | Huang Minshuang Ren Xiaodong Tang Jian |
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| Affiliation: | Huang Minshuang1 Ren Xiaodong1,2 Tang Jian1(1.Opto-mechatronic Equipment Technology Beijing Area Major Laboratory,Beijing Institute of Petro-chemical Technology,Beijing 102617,China,2.Beijing University of Chemical Technology,Beijing 100029,China) |
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| Abstract: | In high precision laser pulsed ranging,the double threshold zero-crossing discriminating circuit is proposed in order to eliminate the timing error caused by the amplitude change of the echo signal.In this article we analyzed the corresponding relationships between the differential zero-crossing and the peak position of laser pulse after the quasi-gaussian laser pulses passing the active CR differential circuits.The high precision double threshold zero-crossing discriminating circuits composed of some chips... |
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| Keywords: | laser pulses ranging quasi-gaussian pulse active CR differential zero-crossing time discriminating |
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