ZHANG Xi, HUANG Dingfa, LIAO Hua, ZHOU Letao, ZHANG Deqiang. Impacts of CORS Network Structure for Real-Time Differential Positioning Service Performance[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 887-893. DOI: 10.13203/j.whugis20130627
Citation: ZHANG Xi, HUANG Dingfa, LIAO Hua, ZHOU Letao, ZHANG Deqiang. Impacts of CORS Network Structure for Real-Time Differential Positioning Service Performance[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 887-893. DOI: 10.13203/j.whugis20130627
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Impacts of CORS Network Structure for Real-Time Differential Positioning Service Performance

    Abstract
  • ThestructuralunitisthebasiccellforCORSnetworkRTKservice.EvaluatingtheserviceperformanceofeachunitquantitativelyhasapositiveeffectwhenguidingandoptimizingtheCORSnetwork.Inthispaper,thepriorivariancedistributionofatmosphericcorrectionsisanalyzedwithalinearinterpolationmodel(LIM).Anevaluationfactorforthenetworkstructureisalsoproposedbasedonserviceperformanceofthestructuralunit.FivestationsfromCRTNnetinU.S.(DOY2010.93)aretestedtounderstandthedifferentperformanceswithdifferentstationsusedasthemasterreferencestation.Finally,therelationshipbetweennetworkstructureandserviceperformanceisana lyzedintheSichuan ChongqingCORS(ithas82triangleserviceunits,withaserviceareacovering250,000squarekilometers).ExperimentalresultsshowthattheCORSnetworkstructureisoneofthemainfactorsthataffecttheserviceperformanceofwide areareal timedifferentialpositioning.TheproposednetworkstructurefactorcanbeusedforevaluatingthestructureofaCORSnetworkwith100kmlevelbaselinelength.
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