| 载体角运动对旋转调制惯导系统误差影响分析 |
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| 引用本文： | 覃方君,李安,许江宁.载体角运动对旋转调制惯导系统误差影响分析[J].武汉大学学报(信息科学版),2012,37(7):831-833,838. |
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| 作者姓名： | 覃方君 李安 许江宁 |
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| 作者单位： | 1. 海军工程大学电气与信息工程学院,武汉市解放大道717号,430033
2. 海军工程大学科研部,武汉市解放大道717号,430033 |
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| 基金项目： | 国家自然科学基金资助项目，湖北省自然科学基金资助项目 |
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| 摘 要： | 针对典型的双轴转停旋转调制系统,从捷联惯导姿态角误差方程出发,理论分析了载体角运动对旋转调制效果的影响。刻度系数误差导致的直流分量误差可等效为不可调制的常值陀螺漂移,对系统的精度水平有较大影响。安装误差导致的交流分量误差可等效为周期振荡的陀螺仪漂移,对系统精度影响较小。仿真结果有效验证了相关分析结论。
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| 关 键 词： | 旋转调制 惯性导航 角运动 误差 |
Analysis of Errors of Rotating Modulation INS Effected by Angular Motion of Vehicle |
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| QIN Fangjun,LI An,XU Jiangning.Analysis of Errors of Rotating Modulation INS Effected by Angular Motion of Vehicle[J].Geomatics and Information Science of Wuhan University,2012,37(7):831-833,838. |
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| Authors: | QIN Fangjun LI An XU Jiangning |
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| Institution: | 1(1 Electrical Engineering and Information Engineering College,Naval University of Engineering, 717 Jiefang Road,Wuhan 430033,China)(2 Office of Research and Development,Naval University of Engineering,717 Jiefang Road,Wuhan 430033,China) |
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| Abstract: | Based on attitude error equations of typical dual-axis-index Inertial Navigation System(INS),influence of angular motion of vehicle is theoretically analyzed.The angular motion,coupled with scale factor and installation error,can deteriorate precision of INS,and produce a new type of error.Scale factor error leads to DC component,which is equivalent to un-compensable constant drift of gyroscope,and has great effect on INS.Installation error leads to AC component,which is equivalent to periodic oscillating drift of gyroscope,and has limited influence on INS.Results of experiment verifies the mentioned conclusions. |
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| Keywords: | rotating modulation inertial navigation angular motion errors |
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