Study on Dynamic Positioning Precision of 4 Kinds DGPS Modules
Xiaopeng Wu · Journal of the South China Agricultural University · 2010
RTK-DGPS was used as the reference to evaluate the dynamic positioning precision of GARMIN GPS15L,Ublox LEA-4S,Gstar GS-87 and Gstar GS-89m-J GPS modules.The test conclusion included:(1) The absolute positioning precisions of GARMIN GPS15L and Ublox LEA-4S were meter level,using pseudo range differential correction,the positioning precision could be improved by 20% and 87%,respectively;(2) The ground pseudo range differential positioning precision was better than MSAS satellite differential positioning,MSAS satellite differential positioning precision was better than single module positioning;(3) The dynamic positioning precision would be effected remarkably by environment condition.