| 考虑舰体变形时的捷联惯性系统初始对准方法 |
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| 引用本文： | 赵睿,程向红,万德钧.考虑舰体变形时的捷联惯性系统初始对准方法[J].舰船电子工程,2006,26(1):127-129,136. |
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| 作者姓名： | 赵睿 程向红 万德钧 |
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| 作者单位： | 东南大学仪器科学与工程系,南京,210096 |
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| 摘 要： | 为尽可能消除惯性测量组件（IMU）安装误差及挠曲变形对初始对准精度的影响，运用传递对准技术，建立系统方程和量测方程，采用扩展状态滤波器和速度加角速率匹配的方法，准确地估计出了这些误差，并对系统进行补偿。仿真结果表明，用速度加角速率匹配估计安装误差和挠曲变形比用速度加姿态匹配效果好，补偿了安装误差和挠曲变形后，系统的导航精度明显提高。
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| 关 键 词： | 捷联惯性系统 初始对准 安装误差 挠曲变形 误差补偿 |
| 收稿时间： | 2005-07-04 |
| 修稿时间： | 2005-07-042005-08-04 |
Initial Alignment of Strapdown Inertial Systems with Ship Deformation |
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| Zhao Rui,Cheng Xianghong,Wan Dejun.Initial Alignment of Strapdown Inertial Systems with Ship Deformation[J].Ship Electronic Engineering,2006,26(1):127-129,136. |
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| Authors: | Zhao Rui Cheng Xianghong Wan Dejun |
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| Abstract: | In order to eliminate the effect of gyros drift and IMU installing error and ship flexure deformation on the accuracy of initial alignment, the extended Kalman filter and velocity- plus- angular rate matching method are applied to estimate and compensate these errors in this paper. From a number of simulations, it is shown that velocity - plus- angular rate matching method is better than velocity- plus- attitude matching method in estimating IMU installing error and flexure deformation, and the accuracy of navigation system has been greatly improved after compensation. |
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| Keywords: | SINS initial alignment IMU installing error flexure deformation error compensation |
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