| 两时间尺度的捷联速度算法研究 |
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| 引用本文： | 奔粤阳,于飞,孙枫,高伟. 两时间尺度的捷联速度算法研究[J]. 北京理工大学学报, 2007, 27(12): 1090-1093 |
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| 作者姓名： | 奔粤阳 于飞 孙枫 高伟 |
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| 作者单位： | 哈尔滨工程大学,自动化学院,黑龙江,哈尔滨,150001;哈尔滨工业大学电气工程及自动化学院,哈尔滨,150001 |
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| 摘 要： | 根据奇异摄动理论分析具有小参数的捷联惯导系统方程,在两时间尺度上对系统状态方程进行了降阶简化处理,设计捷联算法.在内回路推力速度矢量计算中,应用一种新的划船补偿算法补偿比力转换过程中载体姿态变化产生的速度误差.在外回路中进行重力地速计算,完成导航坐标系上速度的更新.仿真结果表明:新算法精度与Savage四子样算法近似,计算量小.
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| 关 键 词： | 奇异摄动 捷联惯导系统(SINS) 两时间尺度 划船补偿算法 |
| 文章编号： | 1001-0645（2007）12-1090-04 |
| 收稿时间： | 2007-07-29 |
A Study on Strapdown Velocity Algorithm with Two Time Scales |
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| BEN Yue-yang,YU Fei,SUN Feng and GAO Wei. A Study on Strapdown Velocity Algorithm with Two Time Scales[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2007, 27(12): 1090-1093 |
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| Authors: | BEN Yue-yang YU Fei SUN Feng GAO Wei |
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| Affiliation: | School of Automatic Control,Harbin Engineering University,Harbin,Heilongjiang 150001,China;School of Electronic Engineering and Automatic Control,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China;School of Automatic Control,Harbin Engineering University,Harbin,Heilongjiang 150001,China;School of Automatic Control,Harbin Engineering University,Harbin,Heilongjiang 150001,China |
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| Abstract: | Based on singular perturbation,strapdown inertial navigation system(SINS) with small parameters is analyzed.The strapdown algorithm is rearranged after predigesting the states equations in two-time scales.The inner boundary layer accounts for the thrust velocity.A new sculling compensation algorithm is designed to deal with the updating attitude during the specific force transformation.The outer boundary layer gives the gravitational velocity computation and velocity update on navigation frame.The simulation results showed that the accuracy of the new algorithm is similar as the four-sample Savage algorithm.Yet it requires less computational quantity. |
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| Keywords: | singular perturbation strapdown inertial navigation system(SINS) two time scales sculling compensation algorithm |
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