Height Anomaly Fitting Based on EGM2008 Model and Weighted Composite Model

doi:10.13474/j.cnki.11-2246.2018.0005

测绘通报 ›› 2018, Vol. 0 ›› Issue (1): 28-32.doi: 10.13474/j.cnki.11-2246.2018.0005

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Height Anomaly Fitting Based on EGM2008 Model and Weighted Composite Model

LUO Taorong¹, WANG Zhongyuan¹, LIANG Ning², MA Xiaoshen¹

1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China;
2. Shaoxing City Planning Surveying and Mapping Institute, Shaoxing 312000, China

Received:2017-04-18 Online:2018-01-25 Published:2018-02-05

Abstract

Abstract:

Height anomaly fitting is an important technical means that the value of GPS height measurement is applied in practice.In this paper,the height anomaly fitting method based on EGM2008 gravity field model is proposed that the long wave item of height anomaly is calculated through EGM2008 gravity field model and the residual height anomaly is fitted through weighted composite model.The measurement data is used to verify the performance of weighted combination model based on EGM2008 gravity field model in the city of Jiangsu province.Numerical results show that the method proposed can increase the performance of this method by 30% and reach centimeter-level in height anomaly fitting.

Key words: EGM2008, height anomaly fitting, weighted combination model, gravity field model

CLC Number:

P228.3

LUO Taorong, WANG Zhongyuan, LIANG Ning, MA Xiaoshen. Height Anomaly Fitting Based on EGM2008 Model and Weighted Composite Model[J]. 测绘通报, 2018, 0(1): 28-32.

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Height Anomaly Fitting Based on EGM2008 Model and Weighted Composite Model

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