激光捷联惯导系统高阶误差模型的建立与分析  

Establishment and analysis of high-order error model of laser gyro SINS

作　　者：于海龙[1] 吕信明[2] 汤建勋[1] 魏国[1] 王宇[1] 饶谷音[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073 [2]国防科学技术大学科研部,湖南长沙410073

出　　处：《红外与激光工程》2013年第9期2375-2379,共5页Infrared and Laser Engineering

摘　　要：针对弹道导弹、火箭的工作环境存在剧烈振动的情况,研究了激光陀螺捷联惯导系统在线振动环境下的误差传播特性,指出加速度计二次项误差对导航精度有重大影响,建立了包括加速度计二次项误差的31阶误差模型。为了评价该模型的准确性,设计了静态和线振动仿真实验,将其与不考虑二次项误差的28阶误差模型进行了比较。仿真结果表明:静态时,两种模型准确度相当;当系统工作环境存在线振动时,建立的31阶误差模型比28阶误差模型准确度提高约5倍。In view of severe vibration in the operational environment of ballistic missiles and rockets, the error propagation characteristics of the laser gyro strapdown inertial navigation system （SINS） in linear vibration environment were studied and it was noted that the square error of accelerator had a significant impact on the navigation accuracy. Then, a 31-order error model was established including the square error. In order to evaluate the accuracy of the model, the static and linear vibration simulations were designed to compare with the 28-order error model without considering the square error. The simulation results indicate that the two models have equivalent accuracy in the static state but the accuracy of 31- order error model is five times higher than the 28-order model in the vibration state.

关 键 词：高阶误差模型 二次项误差 激光陀螺 捷联惯导系统 线振动 

分 类 号：U666.1[交通运输工程—船舶及航道工程]