地磁匹配制导基准图制备理论与方法研究

项目名称： 地磁匹配制导基准图制备理论与方法研究

项目编号： No.60874093

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 生物科学

项目作者： 王仕成

作者单位： 中国人民解放军第二炮兵工程大学

项目金额： 33万元

中文摘要： 本课题以某型导弹为应用背景，对地磁导航基准图制备理论与方法进行了比较系统的研究，主要研究工作包括：（1）完善了最优匹配特征量的选取准则，从地磁场的时间演化和空间变化等四个方面研究了最优特征量的选取方法，分别确定了采用单要素和多要素进行匹配时的最优特征量；（2）对地磁测量数据的预处理方法进行了研究，包括地磁数据降噪、地磁场延拓和坐标系转换等，降低了噪声和干扰的影响，提高了地磁匹配导航的性能；（3）研究了两类地磁导航基准图构建方法，分别对基于单要素和三要素两种形式的地磁基准图构建方法进行了优选和改进，提高了地磁导航基准图的构建精度；（4）通过定性分析和仿真实验研究了地磁场变化对地磁导航的影响，提出了基于多尺度分解和融合表决的地磁导航方法，显著降低了地磁场变化对地磁导航的影响；（5）研究了地磁基准图的适配性分析和适配区选取方法，提出了基于粗糙集理论和层次分析法的地磁图适配性评价方法，有效降低了评价方法的误判概率，提高了可信度，同时采用了基于免疫粒子群的地磁导航适配区选取方法，提高了适配区选取的速度和准确度。

中文关键词： 地磁导航；基准图；制备；稳健性；适配性

英文摘要： This project carries out comprehensive researches on the preparation theories and methods of geomagnetic reference maps for one kind of missiles, and the main work is summarized as followings: The selecting criteria for the optimal matching feature were improved, and researches on selecting methods were carried through from four factors such as time-varying and spatial-varying characteristics of geomagnetic components, finally the optimal matching features were selected when both single component and multi-component of geomagnetic field are used in matching navigation. Pre-treating methods of geomagnetic data including de-noising, continuation and transform of reference frames before preparation of reference maps were studied, thus the impaction of noises is reduced and the performances of geomagnetic navigation are improved. Two constructing methods for geomagnetic reference maps were extensively studied, and selection and improvements for construction methods were carried through when both single component and multi-component of geomagnetic field are used, and the construction accuracy of reference maps for geomagnetic navigation is improved. Impactions of geomagnetic variations on geomagnetic navigation were investigated through theoretic analyses and simulations, and a novel navigation algorithm based on multi-scale decomposition and fusion vote was proposed, and impactions of geomagnetic variations are reduced markedly. Evaluation methods for matching suitability of geomagnetic maps were studied, and a novel evaluation method based on rough set and analytic hierarchy process is proposed, thus the probability of misjudgment is reduced and the evaluation reliability is increased. Selection methods of suitable-for-matching areas based on improved immune particle swarm optimization algorithm is adopted and suitable-for-matching areas can be find out rapidly and exactly.

英文关键词： geomagnetic navigation; reference maps; preparation; solidity; matching suitability