浅谈图形强度对GPS网点位精度的影响——以浙江省某市D级基本控制为例  

Study of the Impact of Figure Intensity on Point Acecracy in GPS Network

作　　者：江金霞[1,2] 张冰[3] 

机构地区：[1]丽水职业技术学院,浙江丽水323000 [2]丽水市城建测量队,浙江丽水323000 [3]浙江省核工业二六九大队,浙江金华321017

出　　处：《测绘与空间地理信息》2009年第5期80-82,共3页Geomatics & Spatial Information Technology

摘　　要：通过选择不同基线构成不同图形强度的GPS控制网,进行3维无约束平差,同时有意将部分重复基线参与或不参与平差,统计平差后各点精度,得出:在满足相应等级控制的测量精度下,几何图形强度最优和最差控制网相比较,其点位精度一般不超过5 mm的互差,且各点WGS-84坐标无明显变化。By choosing different base lines we can compose GPS networks with different figure strengthening, which can carry out 3 - D non - constraint adjustment. At the same time part of base lines participate in or not in adjustments. It can get the result by counting accuracy after the adjusting. Under the condition of measuring accuracy, the geometric figure intensity can be compared with the best and the worst,its point accuracy usually don＇t go beyond 5 mm and point cordinates of WGS84 have no clear change.

关 键 词：GPS控制网 基线 图形强度 平差 精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]