精准农业中UTM投影及反算应用研究

173173475020056J.ofHeilongjiangAugustFirstLandReclamationUniversityJune20051002-2090(2005)03-0047-04P208AStudiesonTheUTMProjectionandIt’sInverseCalculationinThePrecisionAgricultureZHUANGWei-dongWANGChunAbstractBasingonthevisualbasiclanguageandtheMapObjectsmapCOM,theWGS-84geographicalcoordinatessystemtransformstotheUTMprojectioncoordinatessystemwasrealized.Itcouldbeusedforthecalculationoftraveldistanceoftheagriculturalmachinery,areaoffield,etc.ThispaperalsorealizedtheinversecalculationofUTMprojectionusingtheprogrammingofVB,accordingtoUTMprojectioncoordinate,couldcalculatethelongitudeandlatitudecoordinate.Bytheproceduretested,theprecisiontotallyrespondstotherequestofprecisionagriculture.KeywordsUTMMapObjectsinversecalculationprecisionagriculture48173UTM4964254222232)459061(720)935(242yttNMtyttNMtyNMtBBffffffffffffffff++−−+++−=ηη52224253223)8624285(cos1201)21(cos61cos1ytttBNytBNyBNlfffffffffffffηηη+++++++−=5017