| 用时间比例放大技术提高脉冲激光测距的精度 |
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| 引用本文： | 殷聪,韩绍坤,刘巽亮,张化朋,赵跃进.用时间比例放大技术提高脉冲激光测距的精度[J].北京理工大学学报(英文版),2002,11(3):259-262. |
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| 作者姓名： | 殷聪 韩绍坤 刘巽亮 张化朋 赵跃进 |
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| 作者单位： | 北京理工大学,光电工程系,北京,100081 |
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| 摘 要： | 介绍了利用时间比例放大技术以低成本把脉冲激光测距精度提高到±1 m的方法.利用时间比例放大法可以把激光脉冲往返于测程之间的时间按比例放大1 000倍,放大后的结果用于计算被测距离.这种方法把测距系统的计时精度从纳秒级降低到微秒级,从而降低了对系统时钟分辨率的要求.采用时间比例放大技术可以有效地提高激光脉冲测距的精度,而且使测距系统成本低,工艺简单.
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| 关 键 词： | 时间比例放大 测距 电容 充放电 |
| 收稿时间： | 2001/12/7 0:00:00 |
To Improve the Accuracy of Laser Pulse Range Finding by Time Scale-Up |
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| YIN Cong,HAN Shao kun,LIU Xun liang,ZHANG Hua peng and ZHAO Yue jin.To Improve the Accuracy of Laser Pulse Range Finding by Time Scale-Up[J].Journal of Beijing Institute of Technology,2002,11(3):259-262. |
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| Authors: | YIN Cong HAN Shao kun LIU Xun liang ZHANG Hua peng and ZHAO Yue jin |
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| Affiliation: | Department of Optical Engineering, Beijing Institute of Technology, Beijing100081, China;Department of Optical Engineering, Beijing Institute of Technology, Beijing100081, China;Department of Optical Engineering, Beijing Institute of Technology, Beijing100081, China;Department of Optical Engineering, Beijing Institute of Technology, Beijing100081, China;Department of Optical Engineering, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | A method of improving the accuracy of laser pulse range finding from ±10 m to ±1 m inexpensively by means of time scale up is described. Time scale up can stretch the entire flight time by a factor of 1 000 and then the stretched result is counted to calculate the distance. The use of this technique decreases the resolution of counting from nanosecond to microsecond, therefore a separate counting oscillator followed by an interpolation operation is unnecessary. This technique can improve the accuracy of laser pulse range finding inexpensively and effectively. |
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| Keywords: | time scale up range finding capacitor charging and discharging |
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