光纤陀螺随机误差特性仿真与辨识

Research on Simulation and Identification of Random Error Properties for FOG

分析了光纤陀螺的各项随机误差特性,给出了各项随机噪声的仿真方法.运用不同的随机过程模拟各种随机噪声,采用正交小波变换的方法模拟1/f噪声,用白噪声一次离散积分的方法模拟速率随机游走噪声,用一阶马尔可夫过程模拟指数相关噪声,并给出了仿真结果.提出了基于Allan方差、小波分析和功率谱密度的随机误差辨识方法,对光纤陀螺的随机误差特性进行了辨识研究.

The random error properties of FOG were analyzed, and the methods for simulating the randora errors were presented. Various stochastic processes were built to simulate the various types of random noise exiting in FOG. A novel method was investigated to simulate 1/f noise with the orthogonal wavelet transform. Angular random walk noise was simulated with one order discrete integration of white noise, and the exponentially correlated noise was simulated with one-order Markov Process. The stochastic simulation results were given. A comprehensive method for identifying the random error properties of FOG based on Allan variance ,wavelet analysis and power spectrum density was proposed, and the research on identifying the random errors was conducted.