| 基于组合导航技术的光纤捷联系统在线标定 |
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| 引用本文： | 张小跃,张春熹,宋凝芳.基于组合导航技术的光纤捷联系统在线标定[J].航空学报,2008,29(6):1656-1659. |
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| 作者姓名： | 张小跃 张春熹 宋凝芳 |
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| 作者单位： | 北京航空航天大学仪器科学与光电工程学院,北京,100191 |
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| 摘 要： | 将光纤捷联系统惯性测量单元（IMU）输出误差分解成零偏误差、标度因数误差、失准角误差和随机白噪声几个部分，建立了系统误差模型，基于此模型设计卡尔曼滤波器引入高精度外部信息源对IMU进行在线标定。将此方法应用于某光纤捷联系统进行跑车试验，结果表明：引入外部信息源进行在线标定与补偿后系统纯惯导精度显著提高，本文建立的系统误差模型和在线估计方式有效估计了IMU输出误差，实现了系统在线标定，提高了系统实用精度。
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| 关 键 词： | 光纤陀螺 误差模型 卡尔曼滤波 在线估计 在线标定 |
Online Calibration of FOG Strapdown System Based on Integrated Navigation Technology |
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| Zhang Xiaoyue,Zhang Chunxi,Song Ningfang.Online Calibration of FOG Strapdown System Based on Integrated Navigation Technology[J].Acta Aeronautica et Astronautica Sinica,2008,29(6):1656-1659. |
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| Authors: | Zhang Xiaoyue Zhang Chunxi Song Ningfang |
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| Institution: | Zhang Xiaoyue,Zhang Chunxi,Song Ningfang (School of Instrument Science , Opto-electronic Engineering,Beijing University of Aeronautics , Astronautics,Beijing 100191,China) |
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| Abstract: | The output error of an inertial measurement unit(IMU) in a fiber optic gyro(FOG) strapdown inertial navigation system is divided into bias,scale factor,misalignment and white noise. A system error model is built,and a Kalman filter is designed fusing high precision information to calibrate the IMU online. This is applied into an FOG strapdown system and tested in a vehicle. The test results indicate that the free inertial navigation performance is greatly improved with the online calibration technique. The ... |
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| Keywords: | FOG error model Kalman filter online estimation online calibration |
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