一种基于因子分析的重力适配区域选取方法  

Selection method of gravity adaptive region based on factor analysis

作　　者：宫京 张崇猛[1,2] 周贤高 李晓平[1,2] 傅金琳 GONG Jing;ZHANG Chongmeng;ZHOU Xiangao;LI Xiaoping;FU Jinlin(Tianjin Navigation Instruments Research Institute,Tianjin 300131,China;Laboratory of Science and Technology on Marine Navigation and Control of China State Shipbuilding Corporation,Tianjin 300131,China)

机构地区：[1]天津航海仪器研究所,天津300131 [2]中船集团公司航海保障技术实验室,天津300131

出　　处：《中国惯性技术学报》2019年第6期732-737,共6页Journal of Chinese Inertial Technology

基　　金：基础计划加强重点基础研究项目(2019-JCJQ-ZD-017);中船重工集团公司科技创新项目(2017K11)

摘　　要：为了综合分析各类特征值对于适配区选取的影响,提出了一种通过因子分析,将多种特征值综合为少数几个因子,以此确定影响适配区选取参数的方法。首先将整个区域划分为15个子区域,计算每个子区域的各类特征值,利用因子分析的方法统计各区域得分。然后,根据得分情况确定适配区选择顺序。最后,对比验证基于因子分析选出的适配区匹配定位精度。仿真结果显示,基于因子分析选取的适配区总体定位精度为0.45 n mlie,优于传统的主成分分析法,表明利用因子分析来选取重力适配区是一种可行的方法。In order to analyze the influence of various eigenvalues on the selection of the adaptive region, a parameter selection method of adaptive region by synthesizing various characteristic values into a few factors through factor analysis is proposed. Firstly, the whole region is divided into 15 subregions, all the eigenvalues of each subregion are calculated, and the scores of each region are calculated by the method of factor analysis. Then, the subregion with higher score is selected as the gravity adaptive region, and the subregion with lower score is selected as the non-gravity adaptive region. Finally, the matching accuracy of the adaptive region selected based on factor analysis is compared and verified. Simulation results show that the overall positioning accuracy of the adaptive region selected by the proposed factor analysis method is 0.45 n mlie, which is better than that of the traditional principal component analysis method, indicating that the proposed method can effectively select the gravity adaptive region.

关 键 词：重力场 重力适配区 重力匹配 特征参数 因子分析 

分 类 号：U666[交通运输工程—船舶及航道工程]