测绘与空间地理信息
測繪與空間地理信息
측회여공간지리신식
GEOMATICS & SPATIAL INFORMATION TECHNOLOGY
2015年
6期
192-194,197
,共4页
似大地水准面%精化%模型精度检测%GPS
似大地水準麵%精化%模型精度檢測%GPS
사대지수준면%정화%모형정도검측%GPS
quasi-geoid%refinement%model accuracy detection%GPS
介绍了重庆市似大地水准面精化的基本情况，并对精化成果的内符合精度以及外符合精度进行了分析，比较了不同GPS观测时间长度、静态GPS测量和结合CQCORS系统的网络RTK测量的检核精度。结果表明，重庆市似大地水准面精化成果内符合精度较高，主城都市区及区县城市外符合精度较高，能够满足四等三角高程测量精度要求，其余地区满足图根等级高程测量或碎部点高程测量精度要求。
介紹瞭重慶市似大地水準麵精化的基本情況，併對精化成果的內符閤精度以及外符閤精度進行瞭分析，比較瞭不同GPS觀測時間長度、靜態GPS測量和結閤CQCORS繫統的網絡RTK測量的檢覈精度。結果錶明，重慶市似大地水準麵精化成果內符閤精度較高，主城都市區及區縣城市外符閤精度較高，能夠滿足四等三角高程測量精度要求，其餘地區滿足圖根等級高程測量或碎部點高程測量精度要求。
개소료중경시사대지수준면정화적기본정황，병대정화성과적내부합정도이급외부합정도진행료분석，비교료불동GPS관측시간장도、정태GPS측량화결합CQCORS계통적망락RTK측량적검핵정도。결과표명，중경시사대지수준면정화성과내부합정도교고，주성도시구급구현성시외부합정도교고，능구만족사등삼각고정측량정도요구，기여지구만족도근등급고정측량혹쇄부점고정측량정도요구。
In this paper , the basic information of geoids refinement of Chongqing is first introduced , and then the inner precision and the outer precision of the refinement results are respectively analyzed , and then the precision of GPS surveying with different observa-tion times, static GPS measurements, and network RTK surveying with CQCORS are compared .The results show that the inner preci-sion of geoids refinement results of Chongqing is high , the outer precision of metropolitan areas, districts and counties is high enough to meet the requirements of the fourth order trigonometric leveling , and the precision of the other areas is high enough to meet the re-quirements of the graded altimetry survey of root control points or detailed points .
