| GFSINS角速度代数提取算法设计 |
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| 引用本文： | 陈穆清,许江宁,刘强.GFSINS角速度代数提取算法设计[J].海军工程大学学报,2008,20(5). |
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| 作者姓名： | 陈穆清 许江宁 刘强 |
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| 作者单位： | 海军工程大学,电气与信息工程学院,武汉,430033 |
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| 摘 要： | 针对无陀螺捷联惯导系统(GFSINS)获取的姿态角信息包含角加速度项、角速度平方项以及角速度交叉乘积项的特点,在姿态角速度开方算法的基础上设计了对数提取算法.该算法充分利用计算机对数运算的特点,通过简单的代数运算避免了以往姿态角提取时积分过程存在误差积累、开方过程存在的符号判断和除法溢出的问题.仿真结果表明,该算法在精度和稳定性方面均要优于现有的积分算法和开方算法,可以为后续高精度姿态信息提取算法提供输入.
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| 关 键 词： | 姿态角速度 对数算法 |
Design of algebra-based attitude angular velocity algorithm for GFSINS |
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| CHEN Mu-qing,XU Jiang-ning,LIU Qiang.Design of algebra-based attitude angular velocity algorithm for GFSINS[J].Journal of Naval University of Engineering,2008,20(5). |
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| Authors: | CHEN Mu-qing XU Jiang-ning LIU Qiang |
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| Institution: | College of Electronic and Information Engineering;Naval Univ.of Engineering;Wuhan 430033;China |
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| Abstract: | According to the characteristics of attitude angular information such as angular acceleration outputs,square outputs and cross-multiply outputs of angular velocity from GFSINS,this paper pre-sented the logarithmic algorithm based on attitude angular velocity extraction algorithm.This logarithmic algorithm made full use of logarithmic operation characteristics by computer,which avoided not only error accumulation in integral process,but also sign estimation and overflow in the extraction process.The simulati... |
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| Keywords: | GFSINS |
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