稳瞄稳向系统FOG随机信号处理方法研究  

Random signal processing method for FOG of stable targeting system

作　　者：高伟伟[1] 王广龙[1] 高凤岐[1] 高爽[2] 贾波 

机构地区：[1]军械工程学院纳米技术与微系统实验室,河北石家庄050003 [2]北京航空航天大学仪器科学与光电工程学院,北京100191 [3]西安市803厂军代室,陕西西安710043

出　　处：《中国测试》2014年第2期98-100,104,共4页China Measurement & Test

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.

关 键 词：稳瞄稳向 FOG 随机信号处理 ALLAN方差 最小二乘法 

分 类 号：TJ303.6[兵器科学与技术—火炮、自动武器与弹药工程] U666.123[交通运输工程—船舶及航道工程]