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

Impacts of CORS Network Structure for Real-Time Differential Positioning Service Performance

Funds: TheNationalNaturalScienceFoundationofChina,No.41374032;theNationalHi TechResearchandDevelopment Program(863Program),No.2012AA12A209.
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  • Author Bio:

    ZHANG Xi: ZHANGXi,PhDcandidate,specializesinCORSnetworkdataprocessingandanalysis.

  • Corresponding author:

    HUANGDingfa,PhD,professor.

  • Received Date: October 29, 2013
  • Revised Date: July 04, 2015
  • Published Date: July 04, 2015
  • 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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