Comparison of GPS receiver DCB estimation methods using a GPS network
作者： Byung-Kyu Choi , Jong-Uk Park , Kyoung Min Roh , Sang-Jeong Lee
关键词: Geodesy 、 Total electron content 、 Assisted GPS 、 Standard deviation 、 Estimation methods 、 Gps network 、 Root mean square 、 Stability (probability) 、 TEC 、 Space and Planetary Science 、 Geology
摘要: Two approaches for receiver differential code biases (DCB) estimation using the GPS data obtained from Korean network (KGN) in South Korea are suggested: relative and single (absolute) methods. The method uses a network, while determines DCBs station only. Their performance was assessed by comparing DCB values with those estimated method. daily averaged two different showed good agreement 7 days. root mean square (RMS) value of differences is 0.83 nanoseconds (ns). standard deviation smaller than that From these results, it clear can obtain more stable compared over short-term period. Additionally, comparison between Astronomy Space Science Institute (KASI) IGS Global Ionosphere Maps (GIM) at 0.3 ns. As accuracy significantly affects ionospheric total electron content (TEC), studies needed to ensure reliability stability DCBs.
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