influenceofelli p soidconstantsonintero p erabilit yofbroadcaste p hemeriscomp utationbetweenbeidouandgps

thecomp atibilit yandintero p erabilit yofgnss （ g lobalnavi g ationsatellites y stem）multi-constellationcanreducetheburdenofcomp utationonusersandreducethep roductioncostsofgnssreceiversformanufacturers.therearesomep roblemsintheintero p erabilit yofgps，glonass，galileoandbeidounavi g ationsatellites y stems.thep a p erfocusesonanal y sin gtheintero p erabilit yofbroadcaste p hemeriscomp utationbetweenbeidouandgpsinp articular,onaccountofthedifferenceoftheelli p soidconstants.firstl y,thedifferenceoftheearth’ sg ravitationalconstantandtheearth’ srotationrateconstantado p tedb ythebeidouandgpsarelisted.then，theinfluenceofthesmalldifferenceoftheearth’ sg ravitationalconstantandtheearth’ srotationratevaluewereanal y zedtheoreticall yandindatacomp utationp racticewhenusin gbroadcaste p hemeristocomp utethecoordinatesofnavi g ationsatellites.boththeor yandcomp utationsindicatethatthesmalldifferencevalueoftheearth’ sg ravitationalconstantbetweenbeidouandgpscancreateseveralmetererrorinsatellitecoor-dinates.thesmalldifferencevaluesintheearth’ srotationrateconstantbetweenbeidouandgpscancreatemorethantenmetersoferrorandevenseveraltensofmetersoferror.