The influence of different calculation strategies on the establishment of GPS coordinate sequence noise model and speed

FU Jie; NIE Qixiang; HE Xiaoxing; CHEN Hongkang; XUN Changmin

doi:10.12265/j.gnss.2021091501

Volume 47 Issue 1

Mar. 2022

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GNSS World of China > 2022 > 47(1): 74-79. > DOI: 10.12265/j.gnss.2021091501

FU Jie, NIE Qixiang, HE Xiaoxing, CHEN Hongkang, XUN Changmin. The influence of different calculation strategies on the establishment of GPS coordinate sequence noise model and speed[J]. GNSS World of China, 2022, 47(1): 74-79. DOI: 10.12265/j.gnss.2021091501

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The influence of different calculation strategies on the establishment of GPS coordinate sequence noise model and speed

1.
School of Civil Engineer and Architecture, East China Jiaotong University, Nanchang 330013, China
2.
College of Architecture and Surveying Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
3.
School of Surveying and Mapping Engineering, East China Institute of Technology, Nanchang 330032, China

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Received Date: September 14, 2021
Available Online: February 22, 2022

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Abstract

The choice of solution strategy is closely related to GPS station speed and parameter model estimation. In this paper, 121 GPS reference stations under the land network are selected as the research object, and the akaike information criterion/Bayesian information criterion (AIC/BIC) optimal noise model evaluation criteria are used to discuss GAMIT, Bernese and their combined solution strategy (Comb) on the noise model and velocity estimation of the GPS coordinate sequence. The results show that different calculation strategies will have a certain impact on the GPS station parameter estimation results. In terms of the optimal noise model estimation, the GAMIT and Comb solution results mainly show the characteristics of the flicke noise+white noise (FN+WN) and power-law noise (PL)+WN models. The Bernese solution results show the characteristics of the FN+WN model in the east (E) and north (N) directions, and the characteristics of the PL+WN model in the up (U) direction; the influence of the solution strategy on the speed and speed uncertainty will be more significant in the U direction.
- GPS,
- coordinate sequence,
- solution strategy,
- noise model,
- speed estimation

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