ZHU Yan-hua1, CAI Ti-jing1, LI Chun2. Differential algorithm for improving precision of GPS positioning and velocity determination[J]. 2012, 31(11): 122-124.
ZHU Yan-hua1, CAI Ti-jing1, LI Chun2. Differential algorithm for improving precision of GPS positioning and velocity determination[J]. 2012, 31(11): 122-124. DOI: 10.13873/j.1000-97872012.11.004.
The differential algorithm of GPS positioning and vecolity determination is researched
aiming at the demand for high precision application of GPS.Using the double-differential method
specific algorithm for calculating position and velocity of carrier is derived in detail
and specific calculating flow chart is given as well.The algorithm is verified using static datas collected by two NovAtel OEM—1 double frequency GPS receievers.The results show that measurement errors of GPS can be significantly reduced when the differential algorithm is used
which extends applications range of GPS.The position error of aircraft is less than 0.1 m(1σ)
velocity error is less than 0.008 m / s(1σ) by the double-differential method.