重力匹配导航要素影响机理建模与试验验证  

Factor influencing mechanism modeling and test validation of gravity map matching navigation

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

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

出　　处：《中国惯性技术学报》2021年第6期777-781,787,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)。

摘　　要：从重力匹配导航应用要求出发,研究了重力信息误差组成、特性与重力场分布特点,提出了匹配影响要素平衡关系以及匹配定位误差数学模型。选取典型重力特征区域,仿真验证了匹配要素对定位误差的影响关系模型。实船匹配导航试验数据和单项要素误差影响仿真表明,15条航迹船载重力匹配定位精度与模型预测结果符合,重力仪和惯导误差单一要素对匹配误差的贡献度基本相当,验证了重力匹配导航系统配置的合理性以及重力匹配误差模型的有效性。为重力匹配导航的应用奠定了理论和试验基础。Based on the application requirements,the composition,characteristic of the errors in gravity information and the layout of the gravity field are studied.And then the balance relationship of the influencing factors and the mathematical model of map-matching positioning error are proposed.The influence of map-matching factors on positioning error is simulated in some typical gravity feature regions.The sea testing data and the simulation results of the effect of the single factor such as the gravimeter or INS show that the matching positioning accuracy of the 15 tracks is in line with the model prediction,and the contribution of the gravimeter and INS error to the matching error is basically the same,which verifies the validity of the positioning error model and the rationality of error distribution of the map-matching navigation system and lays a theoretical and experimental foundation for the application of the gravitational map-matching navigation technology.

关 键 词：重力测量 重力匹配 重力场特征 

分 类 号：U666.1[交通运输工程—船舶及航道工程]