Study of single-cycle fast dynamic north-seeking algorithm based on fiber-optic gyroscope

LIU Dong-bo; LIU Jian-ye; LAI Ji-zhou

doi:10.13873/j.1000-97872007.11.005

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Study of single-cycle fast dynamic north-seeking algorithm based on fiber-optic gyroscope

更新时间：2025-09-11

- Study of single-cycle fast dynamic north-seeking algorithm based on fiber-optic gyroscope
- Issue 11, Pages: 61-64(2007)
- 作者机构：
  
  1. 南京航空航天大学导航研究中心
  2. 南京航空航天大学导航研究中心,江苏,南京,210016
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872007.11.005
  CLC： V241.5
- Published：2007
- 稿件说明：
移动端阅览
[1]刘东波,刘建业,赖际舟.基于光纤陀螺的单周快速动态寻北算法研究[J].传感器与微系统,2007(11):61-64.

LIU Dong-bo, LIU Jian-ye, LAI Ji-zhou. Study of single-cycle fast dynamic north-seeking algorithm based on fiber-optic gyroscope[J]. 2007, (11): 61-64.
[1]刘东波,刘建业,赖际舟.基于光纤陀螺的单周快速动态寻北算法研究[J].传感器与微系统,2007(11):61-64. DOI： 10.13873/j.1000-97872007.11.005.

LIU Dong-bo, LIU Jian-ye, LAI Ji-zhou. Study of single-cycle fast dynamic north-seeking algorithm based on fiber-optic gyroscope[J]. 2007, (11): 61-64. DOI： 10.13873/j.1000-97872007.11.005.

摘要

以单个单轴光纤陀螺为主要惯性测量器件

提出了一种新的基于单周期逐点最小二乘拟合的快速动态寻北方案。该方法先利用连续恒速的机械旋转将光纤陀螺的输出信号调制成一定频率的余弦调幅波;然后

通过恰当的数字滤波处理较好地抑制了随机漂移和各种高频干扰对测量精度的影响

最后

通过整周期逐点最小二乘拟合显著地降低了低频干扰的影响

提高了寻北精度;并在此基础上进行了实验室实际测试和误差分析。实验结果表明:选用精度0.8°/h的光纤陀螺和该寻北算法

在12′内便可实现10个角分的较高解算精度

操作简单

稳定性好。

Abstract

With a single-axis fiber-optic gyroscope（FOG）as main inertia measuring instrument

a new fast dynamic north-seeking scheme based on single-cycle least square estimation method is presented.In the scheme

the output signal of FOG is firstly modulated as a fix-frequency sine wave by means of continuous revolution.And then gyro random drift and high-frequency disturb is effectively inhibited by right digital filtering.In the end

the influence of low-frequency disturb is reduced to the maximum limit and the north-seeking accuracy is improved by means of the single-cycle least square estimation method.Test result shows the new scheme is a simple fast steady dynamic north-seeking method.Using the scheme and precision of 0.8 °/h.FOG can get 10 angular minute north-seeking precision in 12′.

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references

用于干涉型光纤陀螺温度漂移辨识的RBF神经网络改进算法 [J]. 赖际舟,刘建业,盛守照. 东南大学学报(自然科学版) . 2006(04)

旋转调制式寻北仪滤波技术研究 [J]. 徐建华,谢玲,高亚楠,陈家斌. 北京理工大学学报 . 2005(08)

基于矢量调制法的寻北仪 [J]. 赵岳生,邓正隆. 中国惯性技术学报 . 2004(06)

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