| 前置放大电路带宽对开环光纤陀螺标度因数非线性度的影响 |
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| 引用本文： | 阳明晔,宋章启,吴艳群,张伟.前置放大电路带宽对开环光纤陀螺标度因数非线性度的影响[J].光电工程,2011,38(3):110-114. |
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| 作者姓名： | 阳明晔 宋章启 吴艳群 张伟 |
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| 作者单位： | 国防科学技术大学光电科学与工程学院,长沙,410073 |
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| 摘 要： | 标度因数非线性反应了光纤陀螺在动态范围内输出的偏差度.在开环光纤陀螺中,由于相位调制存在非线性会影响标度因数的线性性.加之前放带宽有限,会使标度因数非线性现象进一步恶化.本文理论分析了,由于滤波器对各次谐波增益不一致,造成标度因数线性度恶化的各种因素.实验结果表明,要使标度因数非线性度小于500ppm,如前放采用一阶R...
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| 关 键 词： | 开环光纤陀螺 调制深度 标度因数非线性度 前置放大器 |
Influence of the Preamplifier Bandwidth on Scale Factor Non-linearity in Open-loop Fiber Optic Gyroscope |
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| YANG Ming-ye,SONG Zhang-qi,WU Yan-qun,ZHANG Wei.Influence of the Preamplifier Bandwidth on Scale Factor Non-linearity in Open-loop Fiber Optic Gyroscope[J].Opto-Electronic Engineering,2011,38(3):110-114. |
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| Authors: | YANG Ming-ye SONG Zhang-qi WU Yan-qun ZHANG Wei |
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| Affiliation: | YANG Ming-ye,SONG Zhang-qi,WU Yan-qun,ZHANG Wei ( College of Opto-Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China ) |
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| Abstract: | Scale factor nonlinearity in an open loop Fiber Optic Gyroscope (FOG) indicates the maximum inaccuracy of rotation rates within the whole measurement range. Because of the non-linearity of the phase modulation, scale factor non-linearity of open loop FOG is inherent and will become worse if the bandwidth of preamplifier is limited. This paper educed theoretically the facts that will make the nonlinearity of scale factor even worse when all harmonic components are amplified dissimilarly. Finally, experiment ... |
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| Keywords: | open-loop fiber gyroscope modulation depth scale factor nonlinearity preamplifier |
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