文档介绍：测量一导线测量(),shouldfirstcheckrecords,plete,thereisnorightandwrong,uracyrequirements,urate・Andthendrawthecalculationsketch,thedatawillnoteinthecorrespondingpositiononthemap,,thelengthofthelineanditscoordinateazimuth,-10,weknowthatthecoordinatesofthelineABstartingpointAare(xA,yA),thesidelengthandthecoordinateazimuthoftheABedgeareDABandAB,respectively,andthecoordinatesofthelineendBshouldbecalculated・ThediffereneebetweenthecoordinatevaluesofthepointsAandBatthetwoendsofthelineiscalledcoordinateincrement,andisexpressedbydeltaxABanddeltayAB・Ascanbeseenfromfigure6~10,theformulaforcalculatingtheincrementofcoordinatesis:(6-1)Accordingtoequation(6~1)calculationofcoordinateincrement,sinvalueandCOSfunctionwithalphaquadrantandthepositiveandnegativepoints,sothecalculatedcoordinateincrementalsohaspositiveandnegative・Incrementofcoordinatepositiveandnegativerulesasshownintable6-5・Table6~5incrementofcoordinatepositiveandnegativerulesquadrantCoordinateazimuthalphaDeltaxDeltayI0to90?++II90to180?III180to270?IV270to360?+ThentheformulaofBpointcoordinatesis:(6-2)Example6~1,knownABsidelengthandcoordinateazimuthis,andifthecoordinatesofApoints,(6~2)ordingtothecoordinatesofthestartinglineandtheendoftheline,thelengthofthestraightlineandthecoordinateazimutharecalculated・AsshowninFig・6~10,thecoordinatesofthepointsatbothendsofthelineABareknownas(xA,yA)and(xB,yB),thenthelinelengthDABandthecoordinateazimuthalphaABarecalculatedasfollows:(6-3)(6-4)Itshouldbenotedthattheangularvalueofthecoordinateazimuthrangesfrom0to360,whiletheangularvaluesofthearctanfunctionsrangefrom-90to+90,andthetwoareinc