QUALITY ANALYSIS OF GNSS DATA BASED ON TEQC IN DIFFERENT ENVIRONMENTS
Yang Zhe 1) ; Dai Wujiao 1,2) ; Yu Wenkun 1,2) ; and Liao Jianping 1)
1)Department of Surveying Engineering & Geo- Informatics, Central South University, Changsha 4100832)Key Lab. Of Precise Engineering Surveying & Deformation Disaster Monitoring of Hunan Province, Changsha 410083
Abstract Multipath, signal diffraction and electromagnetic signal interference are the main factors to decrease the quality of GNSS data. All of these factors are related to the environment of the station. To know more about the relationship between the environment and data, the GNSS data collected from 7 stations in different environments are analyzed by using TEQC software and baseline solutions. The results show the following problems.1) Cycle slip, signal diffraction and multipath effect are the most serious when the GNSS antenna under trees.2) There is a certainextent of electromagnetic signal interference near wireless communication base station and radar station, but less under high voltage transmission line.3) Modern geodetic antenna is immune to the reflected signal when the antenna is above the water surface, but powerless to the reflected signal from the glass curtain wall.
Key words ：
observation environment
data quality
GNSS（Global Navigation Satellite System)
multipath effect
TEQC (Translate
Edit
Quality Check)
Received: 01 January 1900
Corresponding Authors:
Yang Zhe
Cite this article:
Yang Zhe ,Dai Wujiao,Yu Wenkun et al. QUALITY ANALYSIS OF GNSS DATA BASED ON TEQC IN DIFFERENT ENVIRONMENTS[J]. , 2010, 30(5): 135-139.
Yang Zhe ,Dai Wujiao,Yu Wenkun et al. QUALITY ANALYSIS OF GNSS DATA BASED ON TEQC IN DIFFERENT ENVIRONMENTS[J]. jgg, 2010, 30(5): 135-139.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2010/V30/I5/135
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