现代测绘
現代測繪
현대측회
Modern Surveying and Mapping
2015年
5期
50-52,58
,共4页
GPS%高程异常%跨河水准%高差
GPS%高程異常%跨河水準%高差
GPS%고정이상%과하수준%고차
GPS%abnormal elevation%across a river level%height difference
以 GPS测量方法观测双山岛跨河水准为例，从场地选择与布设、选点埋石、GPS 观测前后的一等水准测量、GPS仪器高测量、GPS观测、GPS数据处理与检核、高差计算等方面初步探讨了 GPS跨河水准测量。采用江苏省似大地水准面高程异常成果计算检核 GPS 跨河水准点间的高程异常变化率和高程异常差，采用三角高程测量方法观测的高差与一等水准测量高差、GPS跨河水准高差组成闭合环检核 GPS 跨河水准高差成果的精度和可靠性，为 GPS跨河水准测量应用提供参考。
以 GPS測量方法觀測雙山島跨河水準為例，從場地選擇與佈設、選點埋石、GPS 觀測前後的一等水準測量、GPS儀器高測量、GPS觀測、GPS數據處理與檢覈、高差計算等方麵初步探討瞭 GPS跨河水準測量。採用江囌省似大地水準麵高程異常成果計算檢覈 GPS 跨河水準點間的高程異常變化率和高程異常差，採用三角高程測量方法觀測的高差與一等水準測量高差、GPS跨河水準高差組成閉閤環檢覈 GPS 跨河水準高差成果的精度和可靠性，為 GPS跨河水準測量應用提供參攷。
이 GPS측량방법관측쌍산도과하수준위례，종장지선택여포설、선점매석、GPS 관측전후적일등수준측량、GPS의기고측량、GPS관측、GPS수거처리여검핵、고차계산등방면초보탐토료 GPS과하수준측량。채용강소성사대지수준면고정이상성과계산검핵 GPS 과하수준점간적고정이상변화솔화고정이상차，채용삼각고정측량방법관측적고차여일등수준측량고차、GPS과하수준고차조성폐합배검핵 GPS 과하수준고차성과적정도화가고성，위 GPS과하수준측량응용제공삼고。
Discussed the GPSriver-crossing leveling surveying initially from the choice of area, survey markers and monumentations, GPS primary leveling surveying, GPS surveying instrumental height, GPS observation, GPS data processing,height calculation and so on,which taking the GPS River-crossing Leveling Surveying of Shuangshan island as an example.We computed unusual rate of change of elevation and unusual difference of elevation between bench marks on GPS River-crossing using unusual elevation achievement of the earth level surface of Jiangsu province.The elevation by trigonometric leveling,the elevation by primary leveling surveying and the elevation by GPS river-crossing leveling surveying marked up closed ring to investigate the precision and reliability of achievement of GPS river-crossing leveling surveying,providing reference for the application for GPS river-crossing leveling surveying.
