| 激光陀螺测角仪中指零仪的光路设计与误差分析 |
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| 引用本文： | 黄水花,金洵,沈志,杨卫新.激光陀螺测角仪中指零仪的光路设计与误差分析[J].应用光学,2010,31(2). |
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| 作者姓名： | 黄水花 金洵 沈志 杨卫新 |
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| 作者单位： | 1. 国防科技大学,理学院,湖南,长沙,410073
2. 国防科技大学,光电科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 在激光陀螺测角仪的测量过程中,为了建立一个可靠精确的零点,提出一种特殊的瞄准指示装置--指零仪光路部分的设计方案.介绍了自准直指零仪和干涉指零仪的光路结构及工作原理,针对2种指零仪输出脉冲特性,利用电波探测系统相关理论建立了误差方程,并通过脉宽的计算及之前建立的误差方程得出两者典型的误差值.结果表明干涉指零仪的精度达到了0.05″,自准直指零仪达到了0.23″,干涉指零仪基本可以满足测角仪的精度要求.
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| 关 键 词： | 激光陀螺 动态测角 指零仪 |
Optical design and error analysis of NI in DLG |
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| HUANG Shui-hua,JIN Xun,SHEN Zhi,YANG Wei-xin.Optical design and error analysis of NI in DLG[J].Journal of Applied Optics,2010,31(2). |
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| Authors: | HUANG Shui-hua JIN Xun SHEN Zhi YANG Wei-xin |
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| Abstract: | During the measurement of the dynamic laser goniometer(DLG), it's very important to have a collimation device named null-indicator (NI) to establish an accurate zero point, the high speed response and the accuracy of NI are very important. This paper established an error equation of the output pulse, introduced the optical design of the auto-collimation NI and the interference NI, and obtained their errors. The accuracy of the interference NI is 0.05″, the auto-collimation NI is 0.23″. The interference NI can meet the precision requirement of the DLG. |
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| Keywords: | ring laser gyro dynamic angle-measuring null-indicator |
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