Accuracy Analysis of Network RTK Interpolation Models for Rover Station Tropospheric Delay Correction

doi:10.13474/j.cnki.11-2246.2018.0006

Abstract

Abstract:

The accurate correction of the double-difference tropospheric delay error between the rover station and the reference station is key to the network RTK technology.In this paper,the experiments are based on the observation data from seven reference stations of Henan province ground based augmentation system (GBAS).The linear interpolation method (LIM),the linear combination model (LCM),the low order surface fitting model (LSM) and the kriging interpolation method model (KRG) are selected as the research object.Each model are analyzed for the effect of the correction of tropospheric delay error in several rover stations with different elevation difference level.The experimental results indicate that the LIM and the KRG are more accurate in correcting the tropospheric delay among the four conventional interpolation models.When the height difference between the rover station and the main reference station reaches to 400 meters,the interpolation accuracy of the model is reduced to the decimeter level for the low altitude angle satellite,in which the demands of high precision positioning in rover station cannot be met.

Key words: network RTK, tropospheric delay, interpolation models, accuracy

CLC Number:

P228

LI Ying, CHEN Mingjian, ZUO Zong, YAO Xiang. Accuracy Analysis of Network RTK Interpolation Models for Rover Station Tropospheric Delay Correction[J]. 测绘通报, 2018, 0(1): 33-37,43.

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