摘要
为辨识稳瞄稳向系统中光纤陀螺(fiber optical gyro,FOG)主要噪声,研究基于Allan方差的FOG随机信号处理方法;在静态条件下,对稳瞄稳向系统三轴FOG输出信号进行数据采集,并进行Allan方差分析,通过最小二乘拟合,分别计算FOG 5个随机误差系数;经分析得出稳瞄稳向系统FOG输出信号主要噪声为速率随机游走与速率斜坡噪声。该研究可为简化稳瞄稳向系统误差模型,实现FOG噪声信号重点滤除,提高系统性能提供理论参考与依据。
In order to identify the random noise of FOG in stable targeting system, a random signal processing method of Allan variance was studied. Under static conditions, the signal of triaxial FOG was collected for analyzing with Allan variance. Five error coefficients of FOG were worked out through least squares fitting. After the error coefficients were analyzed, a conclusion is got that rate random walk and rate ramp are the main noise which make the signal out from FOG contaminated. The study will help to simplify the error model, achieve the FOG noise signal focus filter, and provide theory reference and basis to improve system performance.
出处
《中国测试》
CAS
北大核心
2014年第2期98-100,104,共4页
China Measurement & Test
