重力图的可导航性分析  

Navigability analysis of gravity map

作　　者：李艳[1] 刘繁明[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《应用科技》2010年第12期60-63,共4页Applied Science and Technology

摘　　要：利用重力图进行辅助导航时,匹配区域的重力场特征直接影响匹配效果,对重力图进行可导航性分析可以为确定匹配区提供依据,实现高精度定位.分析重力图主要统计参数对区域导航能力的影响,将各参数赋以相应的权重得到区域的总体特征参数,该参数可以描述重力场的特征,可作为可导航性分析的依据.In the experimentation using gravity data,the character of gravity affects the matching results directly.According to the results of analyzing the navigability of the gravity map,we can find out the area that is suitable for matching the accurate position aided inertial system.The effect of each statistical parameter on the area navigability is discussed in this paper,and an overall characteristic parameter is defined by calculating the weighted sum of all parameters.The overall characteristic parameter can be used for depicting the character of gravitational field and can be the basis of navigability analysis.

关 键 词：重力辅助导航 可导航性分析 统计特性 总体特征参数 

分 类 号：U666.1[交通运输工程—船舶及航道工程]