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232Vol.23No.220034JOURNALOFCENTRALSOUTHFORESTRYUNIVERSITYApr.2003X[]1000-2502(2003)02-0114-03全站仪对边测量的精度分析(,412006)[],,.[];;;;;;[]TB2;TH761.1[]BPrecisionAnalysisofOpposite-sideSurveywithElectronicTotalStationDUANZhu-geng(SchoolofSciences,CentralSouthForestryUniversity,Zhuzhou412006,Hunan,China)Abstract:Thisarticleanalyzestheprincipleandprecisionofopposite-sidesurveywithElectronicTotalStation,discussestheposi-tionofsettingupastationandtheprecisionofopposite-sidesurveyinthebestorworstfigure,andputsforwardsomemethodsforimprovingtheprecisionofopposite-sidesurvey.Keywords:engineeringsurveying;surveyinginstrument;opposite-sidesurvey;precisionanalysis;figureintensity;selectingsta-tion,.,,...1 对边测量1Fig.1Diagramofopposite-sidesurvey,...1,AB,ABs,ABP,AB,PAPBab,PAPBC,ABs:s=a2+b2-2abcosC(1),ABs(1).X[]2002-11-14[](1969-),,,,,GPS.2 对边测量的精度分析(1),:s2=a2+b2-2abcosC.(2)(2),:m2s=mA2cos2A+m2bcos2B+ssinAsinBQsin(A+B)2m2C.(3)3 分析与讨论LeicATC302,ABsmsABs.LeicATC302mD=2+210-6D,mC=2,ma=2+210-6amb=2+210-6b().s=300m,(3)mS,1.14.1s=300m,AB(ms)Table1Themeansquareerroroftheopposite-sidesurveyunderthecon-ditionsofs=300m,differentA,BvaluesmmAB1030507090110130150103.23.12.92.72.62.83.13.5303.13.02.82.72.83.44.7502.92.82.83.13.96.7702.72.73.14.28.1902.62.83.98.11102.83.46.71303.14.71503.5(1)ABC901080,ABs300m,ms=2.6mm,2P,ms.ABs.,ABC901080,.ABAB,,..(2)ABC606060,ABs300m,(3)ms=3.1mm,PABP,ms.,[2].,223Fig.2ThebestfigureofoppositeFig.3Theworstfigureof-sidesurveyopposite-sidesurvey.(3)ABC907020,ABs300m,ms=8.1mm,3P,ms.1,PAB,C30,ms,,ABs..(4),,,,PABA=90B=10C=80,PAB.2(A=90B=10C=80),(A=90B=70C=20),(3)ms.2.1152:2mD,mC,s(ms)Table2ThemeansquareerroroftheoppositesurveywithoptimumfigureandworstfigureundertheconditionsofdifferentmD,mr,smmmDmCA=90B=10C=80(),sms0.1km0.2km0.3km0.4km0.5km0.6km0.7km0.8km0.9km1.0kmmD=1+110-6D,mC=11.11.21.31.41.51.71.81.92.02.1mD=2+210-6D,mC=12.22.42.62.83.03.23.43.63.84.1mD=2+210-6D,mC=22.22.42.62.93.13.33.63.84.14.3mD=5+510-6D,mC=55.46.06.67.17.78.38.99.610.210.8mDmCA=90B=70C=20(),sms0.1km0.2km0.3km0.4km0.5km0.6km0.7km0.8km0.9km1.0kmmD=1+110-6D,mC=11.42.74.05.46.78.09.410.712.013.3mD=2+210-6D,mC=11.62.94.25.56.98.29.510.912.213.6mD=2+210-6D,mC=22.85.48.110.813.416.118.821.424.126.8mD=5+510-6D,mC=57.013.620.226.933.540.246.953.660.266.9(1)A=90B=10C=80(),AB,ms,ms/s,;ms;ms.:AB300m,mD=2+210-6D,mC=2mC=1,AB2.6mm,;mC=1,mD=2+210-6DmD=1+110-6D,AB2.6mm1.3mm,.,(A=90B=10C=80),,.(2)A=90B=70C=20(),ABms,ms/s;ms;ms.:AB300m,mC=1,mD=2+210-6DmD=1+110-6D,AB4.2mm4.0mm,;mD=2+210-6D,mC=2mC=1,AB8.1mm4.2mm,.,(A=90B=70C=20),,C,,AB.4 结束语,,,(A=90B=10C=80)P,(A=90B=70C=20),.[][1],.[M].:,1982.[2].[M].:,1984.[本文编辑:邱德勇]11623