毕业设计论文 外文文献翻译 中英文对照 现有测绘成果转换到中国Word文档格式.docx
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毕业设计论文 外文文献翻译 中英文对照 现有测绘成果转换到中国Word文档格式.docx
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Longaxlea=6378137m
Flatratef=1/298.257222101
GravitationalconstantGM=3.986004418×
1014m3s-2
Angularvelocityω=7.292l15×
10-5rads-1
Otherparametersasfollows:
Shortradiusb(m)
6356752.31414
Polarradiusofcurvaturec(m)
6399593.62586
Thefirsteccentricitye
.0818********
Squaredoffirsteccentricitye2
0.00669438002290
SecondEccentricity
0.0820944381519
SquaredofSecondEccentricity
2
0.00673949677548
1/4ThelengthofthemeridiancircleQ(m)
10001965.7293
TheaverageradiusofellipsoidR1(m)
6371008.77138
ThesamesurfaceareaofthesphereradiusR2(m)
6371007.18092
ThesamevolumeofradiusR3(m)
6371000.78997
EllipsoidintheproperpositionU0(m2s-2)
62636851.7149
DynamicshapefactorJ2
0.001082629832258
SphericalharmoniccoefficientsJ4
-0.00000237091126
SphericalharmoniccoefficientsJ6
0.00000000608347
SphericalharmoniccoefficientsJ8
-0.00000000001427
0.00344978650678
TheEquator’svalueofnormalgravityγe
9.7803253361
Polarizednormalgravityvalueγp
9.8321849379
Meannormalgravityγ
9.7976432224
Latitude45degreesofthenormalgravityvalueγ45°
9.8061977695
2.ThemethodofPointandcoordinate’stransformation
(1)Modelselection
Thescopeofnationalandprovincialchoosetwo-dimensionalcoordinateconversionsevenparametertransformationmodel;
provinciallevelbelowthethree-dimensionalcoordinateconversionoptionorfour-parametermodelforplanarfour-parametermodel.FortherelativelyindependentplanecoordinatesystemandtheChinaGeodeticCoordinateSystemlinksfourparametersmodelcanbeusedflatorpolynomialregressionmodel.CoordinatetransformationmodeldetailedinPartVIofthisguide.
(2)Coincidencepointselection
Coincidencecoordinatescanbeusedinthetwocoordinatesaretheresultsofthepointcoordinates.Butintheendoverlappointneededtodeterminetheconversionparametersaccordingtothecalculatedcoincidencecoordinateresiduals,accordingtothesizeoftheresidualstodetermineiftheresidualerrorisgreaterthan3timesremovedinrecalculatethecoordinateconversionparametersuntilsatisfiedprecisionsofar;
usedtocalculatethenumberoftransformationparametersandconversionCoincidencesizeoftheregion,butnotlessthanfive.
(3)Calculationofmodelparameters
Coincidenceidentifiedwiththecoordinatesofthecoordinateconversionmodelmodelparametersusingleastsquaresmethod.
(4)Accuracyassessmentandvalidation.
Coordinatetransformationwiththeabovemodelmustmeetthecorrespondingprecisionindicators,specificindicatorsandassessmentofaccuracyassessmentmethods,seetheannextorelevantcontent.Selectsomecoincidenceasanexternalcheckpoint,isnotinvolvedinconversionparametercalculation,calculatingthetransformationparametersusingtheconversionpointcoordinatesarecomparedwithknowncoordinatesoftheexternalcheck.Shouldbeselectedatleastsixevenlyspacedpointsonthecoordinatetransformationcoincidesaccuracycheck.
(5)Coordinatesofthemidpointofthedatabaseconversionmodelparametercalculationofregionalselection
Xi'
ancoordinatesystemforthe1980database,usingnationaldataofasetofmodelparameterstomeetthe1:
5millionand1:
25millionscaledatabaseconversionaccuracy;
withthenationaldataofthemodelparametersofthesixregionalmeets1:
10000scaledatabaseconversionaccuracy.Forthe1954Beijingcoordinatesdatabaseconversion,usingthenationaldataofthemodelparametersofthesixregionalmeets,and1:
25million,1:
5millionscaledatabaseconversionaccuracy;
by(2°
×
3°
)toCalculationofmodelparameterstomeetthe1:
1millionscaledatabaseconversionaccuracy.
3.1:
2.5-1:
25Millionconversionofthedatabase
(1)BasicscaletopographicmapsbycountryFramingorganization'
sdatabase
Basicscaletopographicmapsbycountrysub-siteorganizationsgraphicsdata(DLG,DEM,DRG),basedonthefollowingprogramtoconvert.
1.1:
10millionDLGconversionofthedatabase
(2)1954Beijingcoordinatesystem1:
10millionDLGconversionofthedatabase
A,accordingtotheappropriateregionalscalesub-divisionoflots,twostepscompletethecoordinatetransformation.Firsttoellipsoidtransform,re-scalemapsusingthecorrespondingregionofX,Ycoordinatesofthecoordinateshiftamountofshift;
B,accordingto2000NationalGeodeticcoordinatescorrespondingtothescaleofthestandardprofiledataandDrawingcuttingedgeoftheregionmapsthedataintheblankareaadjacentmapsuseadditionaldata;
C,addthe2000NationalGeodeticcoordinatesingridsquarelayer,deletetheoriginalsquaregridwherethedatalayer;
D,completethechartprofilechanges,dataediting,dataaccessside,topologyreconstruction,datastorageandotherdataprocessingandconstructionoflibrarywork;
E,withmapsforEdge:
Thepictureontheright(1954Beijingcoordinatesystem)thenleft(ChinaGeodeticCoordinateSystem),thefirstpictureontherightoftheellipsoidtobringchangeandchangeintheuseoftheleftwithleftofmotionforthecoordinatesofpictureontherighttranslation,completedandsavedthenintheleftsidewiththepictureontheright(backup)results.BacktopictureontherighttowithdrawforEdgetojointhepanwiththeamount,andtheprojectiontransformation,andfinallyusetherightamountofcompletionofthetranslationwiththeirowntranslationbeforetheyareallowedaccesstoitsadjacentpictureontherightside;
F,onthebasisofgeographicinformationdatabasemetadataassociatedchangesentries.
(2)1980Xi'
ancoordinates1:
10millionDLGDatabaseConversion
Framingaccordingtotherelevantregionaldivisionofscale,withoutregardtoellipsoidtransform,directlycorrespondingtothescaleregionalmapsX,Ycoordinatesofdisplacementistocoordinatetranslation;
andthenfollowthe1954BeijingDLGdatabasecoordinatesystemtransformationb~fthecorrespondingsteps.
2,1:
10millionDRGDatabaseConversion
Theoriginaldata300~500dpiscanoforiginalprintedmapstocorrectgeneratedbytheRGBrasterdata,nomapsbetweentheelementsofEdgeTreatment.
(1)1954Beijingcoordinates1:
10millionDRGDatabaseConversiona、
A,considertheellipsoidtransformationandthecorrespondingmapcontourcorneroftheX,Ycoordinatetranslation,calculationcoordinatesystemin1954,BeijingDrawingofprofilecornerintheChinaGeodeticCoordinateSystemcoordinates,andmodifytheappropriateheaderfilespositioningcoordinates;
B,inthe2000NationalDRGdatasuperimposedontheearthcoordinatesystembasedonthenewgeodeticcontrollayer(Fig.profileandsquareinthegrid,etc.),thenewchartprofiledataordatagapsdonotdoachartpatternfortheregiontocomplementandreduction;
C,inthelegendtoadd2,000NationalGeodeticCoordinateSystemControlbasenoteofnewterms;
D,thedatalayerwascompleted,andkeeptheoriginalresolutionofDRGdata;
E,changethemetadatarelatedtocontent,increasethestandardofthe1954BeijingFramingcoordinatesfourcornersofpointsintheplanprofileChinaGeodeticCoordinateSystemcoordinates,calculatingin2000thenationalstandardgeodeticcoordinatesystemprofilecornersframingthemapcoordinatesofpoints.
TheconverteddataforChinaGeodeticCoordinateSystemcoordinates,coordinates1954BeijingFraming.
(2)1980Xi'
GetmapscorrespondingcontourmapscalemapscorneroftheX,Ycoordinateshiftamountcalculationundertheshiftmapspositioningcoordinates,modifytheheaderfile;
andthenfollowthecoordinatestothe1954BeijingNationalGeodeticCoordinateSystem20001:
2.5-1:
10millionDRGdatabaseconversionb~esteps.
TheconverteddataforChinaGeodeticCoordinateSystemcoordinates,coordinatesofXi'
anin1980,Framing.
3,1:
10millionDEMDatabaseConversion
Theoriginaldataof25meterresolutiongrayscale(256)rasterdata,librarydata,mapsindirectedgeprocessingintact.Thisdataconversioncanbeintwoways:
oneisbasedontheChinaGeodeticCoordinateSystemrelatedtolayerDLGdata(contourlines,e
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