| 电子罗盘在捷联惯导初始对准中的应用 |
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| 引用本文： | 吴周洁,鲍其莲. 电子罗盘在捷联惯导初始对准中的应用[J]. 电子测量技术, 2009, 0(1): 56-58 |
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| 作者姓名： | 吴周洁 鲍其莲 |
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| 作者单位： | 上海交通大学仪器科学与工程系,上海,200240 |
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| 摘 要： | 由于低成本捷联惯导系统难以完成航向自对准，故引入电子罗盘来解决此问题。本文介绍电子罗盘TCM2的航向测量原理，并提出基于椭圆假设的非线性两步估计算法来补偿电子罗盘误差；讲述电子罗盘在捷联惯导初始对准过程中的应用；分别进行了电子罗盘误差补偿和捷联惯导初始对准实验。实验结果显示，补偿后的航向角误差能控制在1°以内；且将补偿后的电子罗盘用于捷联惯导初始对准能缩短对准时间，提高对准精度。
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| 关 键 词： | 电子罗盘 误差补偿 捷联惯导系统 初始对准 平淡卡尔曼滤波 |
Application of electrical compass in initial alignment of SINS |
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| Wu Zhoujie,Bao Qilian. Application of electrical compass in initial alignment of SINS[J]. Electronic Measurement Technology, 2009, 0(1): 56-58 |
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| Authors: | Wu Zhoujie Bao Qilian |
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| Affiliation: | Dept.of Instrument Science & Engineering;Shanghai Jiao Tong University;Shanghai 200240 |
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| Abstract: | Due to azimuth alignment is hard to be accomplished in low cost strap-down inertial navigation system(SINS),electrical compass is added to solve the problem.Firstly,the basic principle of magnetic heading measurement is introduced and the nonlinear two-step estimation algorithm based on ellipse hypothesis is used to compensate error of TCM2.Then,electrical compass is applied in initial alignment of SINS.Finally,the experiments of compass error compensation and initial alignment of SINS are performed.The exp... |
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| Keywords: | electrical compass error compensation SINS initial alignment unscented Kalman filter |
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