| 地形辅助导航系统中的数字地图误差模型辨识* |
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| 引用本文： | 王巍,陈哲.地形辅助导航系统中的数字地图误差模型辨识*[J].控制理论与应用,1996,13(2):223-229. |
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| 作者姓名： | 王巍 陈哲 |
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| 作者单位： | 北京航空航天大学自动控制系 |
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| 基金项目： | 国防科工委《国防科技应用、基础研究重点项目计划》资助 |
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| 摘 要： | 地形辅助导航系统在引入量测时便引入了与数字地图有关的误差，含数字地图制作误差及地形随机线性化误差两类。本文在建立系统误差模型的基础上研究了两类误差产生的机理、影响误差的因素、样本获取的手段及误差模型辨识等问题，并采用扩维系统仿真的方法研究了误差的平稳特性、白度、模型参数等特性及其对系统精度的影响，获得了对数字地图误差模型的基本估计。
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| 关 键 词： | 地形辅助导航 辨识 导航系统 数字地图 误差模型 |
| 收稿时间： | 1995/3/23 0:00:00 |
| 修稿时间： | 1995/10/30 0:00:00 |
Identification of DEM-Related Error Models in Terrain Aided Navigation |
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| WANG Wei and CHEN Zhe.Identification of DEM-Related Error Models in Terrain Aided Navigation[J].Control Theory & Applications,1996,13(2):223-229. |
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| Authors: | WANG Wei and CHEN Zhe |
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| Abstract: | When the measurement is introduced into terrain aided navigation system. the DENI (Digital Elevation Map )-Related errors, including DEM-making error and stochastic linearlzation error. are introduced too. In this paper,based on the system modelling,following issues are discussed: 1 the production mechanism of DEM-related errors;2 the factors influencing these errors: 3 the acquirements of the error samples; 4 the identification of error models; etc.. By means of the augmented system simulations the smooth performance, whiteness, model parameter estimation, and their influences to system accuracy for these errors are explored. Therefore,the basic evaluation of DEM-related error model has been developed. |
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| Keywords: | terrain-aided navigation EKF stochastic linearization model indentification |
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