• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical fiber technology >Study on phase noise induced by 1/f noise of the modulator drive circuit in high-sensitivity fiber optic gyroscope
【24h】

Study on phase noise induced by 1/f noise of the modulator drive circuit in high-sensitivity fiber optic gyroscope

机译：高灵敏度光纤陀螺仪调制器驱动电路1 / f噪声引起的相位噪声研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The contribution of modulator drive circuit noise as a 1/f noise source to the output noise of the high-sensitivity interferometric fiber optic gyroscope (IFOG) was studied here. A noise model of closed-loop IFOG was built. By applying the simulated 1/f noise sequence into the model, a gyroscope output data series was acquired, and the corresponding power spectrum density (PSD) and the Allan variance curve were calculated to analyze the noise characteristic. The PSD curve was in the spectral shape of 1/f, which verifies that the modulator drive circuit induced a low frequency 1/f phase noise into the gyroscope. The random walk coefficient (RWC), a standard metric to characterize the noise performance of the IFOG, was calculated according to the Allan variance curve. Using an operational amplifier with an input 1/f noise of 520 nV/root Hz at 1 Hz, the RWC induced by this 1/f noise was 2x10(-4)degrees/root h, which accounts for 63% of the total RWC. To verify the correctness of the noise model we proposed, a high-sensitivity gyroscope prototype was built and tested. The simulated Allan variance curve gave a good rendition of the prototype actual measured curve. The error percentage between the simulated RWC and the measured value was less than 13%. According to the model, a noise reduction method is proposed and the effectiveness is verified by the experiment.
机译：本文研究了作为1 / f噪声源的调制器驱动电路噪声对高灵敏度干涉式光纤陀螺仪（IFOG）的输出噪声的影响。建立了闭环IFOG的噪声模型。通过将模拟的1 / f噪声序列应用于模型，获取了陀螺仪的输出数据序列，并计算了相应的功率谱密度（PSD）和艾伦方差曲线以分析噪声特性。 PSD曲线呈1 / f的频谱形状，这证明调制器驱动电路在陀螺仪中产生了低频1 / f相位噪声。根据Allan方差曲线计算了随机游动系数（RWC），这是表征IFOG噪声性能的标准度量。使用运算放大器，输入1 / f噪声在1 Hz时为520 nV / root Hz，1 / f噪声引起的RWC为2x10（-4）degrees / root h，占总RWC的63％ 。为了验证我们提出的噪声模型的正确性，构建并测试了高灵敏度陀螺仪原型。模拟的艾伦方差曲线很好地再现了原型的实际测量曲线。模拟的RWC和测量值之间的误差百分比小于13％。根据该模型，提出了一种降噪方法，并通过实验验证了其有效性。

著录项

  • 来源
    《Optical fiber technology》 |2018年第5期|50-55|共6页
  • 作者

    Teng Fei; Jin Jing; Li Yong; Zhang Chunxi;

  • 作者单位

    Beijing Inst Control Engn, Beijing, Peoples R China;

    Beijing Univ Aeronaut & Astronaut, Sch Instrument Sci & Opt Elect Engn, Beijing 100191, Peoples R China;

    Beijing Inst Control Engn, Beijing, Peoples R China;

    Beijing Univ Aeronaut & Astronaut, Sch Instrument Sci & Opt Elect Engn, Beijing 100191, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fiber optic gyroscopes; 1/f noise; Phase noise; Modulator drive circuit;

    机译：光纤陀螺仪;1 / f噪声;相位噪声;调制器驱动电路;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号