全光纤陀螺全数字信号处理研究

The Research of the Digital Signal Processing of All FOG

为了提高全光纤陀螺的精度 ,扩大测量动态范围和简化电路结构 ,提出了一种结构紧凑 ,适合于中低精度范围的光纤陀螺信号处理方案。该方案主要采用全数字信号处理技术来替代传统模拟电路的功能 ,并且具有同时处理三个光纤陀螺光学表头输出信号的特点。采用该方案的样机精度达到 1～ 1 0 (°) /h,动态范围达到± 50 0 (°) /s。

For the purposes of the improvement of the accuracy of the All Fiber Optic Gyroscope(FOG), the extension of the dynamic range and the simplicity of the electronic circuit, this paper proposes a new kind of signal processing of the FOG with the advantage of small volume and suitable for the medium and low accuracy. The all digital signal processing is adopted in the FOG to substitute for the traditional analogue circuit; it has the advantage of processing the signals from three optic parts of the gyroscopes simultaneously. The profile is very simple and its accuracy is from 1 to 10((/h). The dynamic range reaches 500((/h).