| 激光陀螺捷联惯导系统参数稳定性与外场自标定 |
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| 引用本文： | 吴文启,张岩,张晓强,潘献飞.激光陀螺捷联惯导系统参数稳定性与外场自标定[J].中国惯性技术学报,2011,19(1). |
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| 作者姓名： | 吴文启 张岩 张晓强 潘献飞 |
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| 作者单位： | 国防科技大学,机电工程与自动化学院,长沙,410073 |
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| 基金项目： | 国家973重大基础研究项目资助(61334010303) |
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| 摘 要： | 惯导系统参数稳定性是决定系统精度的重要因素。基于激光陀螺捷联惯导系统参数稳定性统计分析,建立了适合激光陀螺捷联惯导系统外场自标定的加速度计组件误差参数模型。以惯性组合转动后重新调平的水平姿态修正量以及静态下重力测量误差为观测量,不依赖外界方向姿态转角等基准信息,实现了加速度计组件主要误差参数在外场条件下的自标定,并给出了标定参数的修正方法。实验表明,常温下加速度计组件的标定参数发生明显变化,采用外场标定方法可对其进行修正,相应的水平姿态最大误差由65″减小到10″。该方法标定精度好,标定时间短,操作简便,且对基座不稳造成的瞬时姿态小扰动影响有抑制能力。
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| 关 键 词： | 激光陀螺捷联惯导系统 参数稳定性 外场自标定 加速度计 |
Parameter stability and outfield self-calibration of RLG-SINS |
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| WU Wen-qi,ZHANG Yan,ZHANG Xiao-qiang,PAN Xian-fei.Parameter stability and outfield self-calibration of RLG-SINS[J].Journal of Chinese Inertial Technology,2011,19(1). |
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| Authors: | WU Wen-qi ZHANG Yan ZHANG Xiao-qiang PAN Xian-fei |
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| Institution: | WU Wen-qi,ZHANG Yan,ZHANG Xiao-qiang,PAN Xian-fei (College of Mechatronic Engineering and Automation,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | The parameter stability of INS is a key factor to determine the system precision.In this paper,an error model of accelerometer components is presented for RLG-SINS outfield self-calibration based on the statistic analysis of parameter stability.Observation equations are proposed with level or tilt correction for IMU rotation and static gravity measure error.Outfield self-calibration of the error parameters can be achieved without any form of outside orientation attitude or rotation angle reference aiding.Th... |
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| Keywords: | RLG-SINS parameter stability outfield self-calibration accelerometer |
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