手持GPS定位在野外地质测量中的误差分析  

Error Analysis on Handheld GPS Positioning in Field Geological Survey

作　　者：周蓓[1] 陶彣君[1] 

机构地区：[1]湖北省国土测绘院,湖北武汉430000

出　　处：《资源环境与工程》2009年第3期311-313,共3页Resources Environment & Engineering

摘　　要：GPS在工程测量、导航定位等应用中所具有的优越性和方便性,使其应用越来越广泛。在野外地质测量中小巧方便的手持GPS机能够起到辅助定点和导航的重要作用,是新时期实现现代化数字地质调查的基础设备之一。但由于野外地形、树木等多路径环境因素的影响,其测量精度和应用受到限制。针对手持机的特点,通过实际测点分类统计分析各方面因素对误差产生的影响程度,进而得出修正方案,提高测量精度和实用性。GPS is used more and more widely in project measure, navgation orientation and so on, due to its advantage and conveniences. Moreover, It also plays an important role in field work of geological measure, including assisting positioning, and navigation, which is one of the basic devices to achieve the modem digital geological survey. However, the many environmental factors, such terrain, trees, have a great affect on its precision. Therefore, based on statistics method, the influence of different aspects such as terrain, plants and time of point measure in field, are analyzed and calculated to obtain a better modified scheme for precision and application improving.

关 键 词：地质测量 GPS定位 误差分析 地形因素 数字地质调查 GeoSurvey系统 

分 类 号：P228.4[天文地球—大地测量学与测量工程]