EFFECT OF HEIGHT DIFFERENCE ON GPS VERTICAL ACCURACY
Dai Wujiao; Chen Zhaohua ;and Liang Ming
Department of Survey Engineering and Geomatics, Central South University, Changsha 410083
Abstract When the height difference between the ends of the baseline is large, the tropospheric delay can not be mitigated by the usually used double difference technology even if the length of the baseline is short. It is caused by the different weather condition between the ends of the baseline with large height difference. In order to analyze the height difference effect on GPS vertical accuracy, the several computing tests were carried out by using the data from Hong Kong GPS reference network. Some conclusions can be drawn from these test results. The first, the residual tropospheric delay will be big without using empiric tropospheric delay model and standard atmosphere model when the height difference is large. The second, the errors of meteorology observation on sea level will bring about some errors in GPS vertical direction even the empiric tropospheric delay model and standard atmosphere model are used. The third, observations for a long time can smooth some stochastic effects of the residual tropospheric delay.\
Key words ：
GPS
height difference
tropospheric delay
height
baseline
Received: 01 January 1900
Corresponding Authors:
Dai Wujiao
Cite this article:
Dai Wujiao,Chen Zhaohua,and Liang Ming. EFFECT OF HEIGHT DIFFERENCE ON GPS VERTICAL ACCURACY[J]. , 2009, 29(3): 80-83.
Dai Wujiao,Chen Zhaohua,and Liang Ming. EFFECT OF HEIGHT DIFFERENCE ON GPS VERTICAL ACCURACY[J]. jgg, 2009, 29(3): 80-83.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2009/V29/I3/80
[1]
SUN Wei,ZHU Mingchen. Study on Modeling of Tropospheric Zenith Delay in China with BP-Adaboost Strong Predictor
[2]
ZHANG Shuangcheng,XU Qiang,LUO Yong,LEI Kunchao,NIU Yufen,PANG Xiaoguang. Temporal and Spatial Variation of Land Subsidence in Beijing from 2017 to 2020 Interpreted by Time Series InSAR
[3]
ONG Qi,GAO Ertao,YU Hangming,LAN Yanping. Research on the Sensitivity of Deep Slip Inversion for Earthquake Fault Slip Constrained by InSAR and GPS Geodetic Deformation Data
[4]
WANG Xuke,YAN Shiwei,ZHAO Hong,YANG Xiaolei. Research on the Adaptability of Different Tropospheric Zenith Delay Models in Northwest China
[5]
WANG Xiaolei,NIU Zijin,HE Xiufeng. Precipitation Analysis and Judgment Based on GPS Water Vapor Retrieval and GPS-IR
[6]
ZHANG Jian，ZHAO Bin，WANG Dongzhen，WANG Haibin，LIU Zhijun. Probing the Rheological Structure of Southern Tibet from the Postseismic Deformation of the 2015 MW 7.8 Nepal Earthquake
[7]
E Shenglong，ZHOU Gang，LONG Hai，LUO Yingting，XU Hailin，RAO Zhangquan，ZHOU Yongyan. Performance Evaluation of BDS Global Positioning Service and Zenith Tropospheric Delay Estimation
[8]
TIAN Xiao,ZHAN Wei,ZHENG Hongyan,YIN Haiquan. Characteristics of Present-Day 3D Crustal Movement of Sichuan-Yunnan Region
[9]
GUAN Zhongpei,GAO Ying,LI Li,ZHOU Jialing,LIU Yu,HOU Xiaoling,ZHANG Wenwen. Parameter Fusion from GPT2w Model and GNSS to Obtain Precipitable Water Vapor
[10]
JIANG Guangwei,WANG Bin,CHEN Xiongchuan,TIAN Xiaojing,WANG Panlong. The Relative Spatial Relation and Random Effects of Regional Reference Frame in the Northeast of China
[11]
ZHAO Wenhao,LIU Genyou,WANG Shengliang,GAO Ming. GPS-L1/BDS-B1 Non-Overlapping Frequency Tight Combination Relative Positioning
[12]
LIU Zhongguan，YUAN Linguo，CHEN Changfu，CHENG Shuai，ZHANG Di. Modeling Accuracy Analysis of Ocean Tide Load Displacement in New Zealand
[13]
FU Bolin，XIE Shuyu，LI Tao，LI Hao，ZUO Pingping，GAO Ertao. Comparative Study of Landslide Remote Sensing Monitoring Based on SBAS/PS-InSAR Technology
[14]
DAI Hongbao，TANG Hongtao. Analysis of Tectonic Stress Field Characteristics of Longxian-Baoji Fault Zone Based on GPS Data
[15]
WANG Dongzhen, ZHAO Bin, YU Jiansheng, TAN Kai. Can Vertical Crustal Deformation Be Monitored by Campaign GPS?——Taking Chinese Mainland as Example
