DocumentCode :
3216360
Title :
The use of sliding time window in the real-time solution of ground-based GPS data
Author :
Zhang, Jingjiang ; Chu, Yanli
Author_Institution :
Inst. of Urban Meteorol., CMA, Beijing, China
Volume :
4
fYear :
2011
fDate :
29-31 July 2011
Abstract :
With the uses sliding time window to define the starting time and ending time of GPS data involved in the solution, the sliding time window makes the latest observed data added to the real-time data solution and raises efficiently the real-time property of the results of data analysis. Using time windows with fixed width, the ambiguity resolution accuracy can be guaranteed with the least occupation of computer resource. This paper, using the sliding time window and taking the example of data from 6 IGS stations in China, calculates parameters of troposphere of all these stations. Using the daily ZTD of the stations mentioned above that posted on the website of CODE as normal value, this paper calculates the standard deviation respectively and analyzes the influence exerted to the accuracy and real-time property of ZTD solution by time windows with different width. The operational system of “Ground Based GPS Real Time Water Vapor Retrieval” with the use of sliding time window can gain parameters of troposphere with high-accuracy and meanwhile meet the real-time demands of the operation. The best time window width is 6-8 hours.
Keywords :
Global Positioning System; statistical analysis; ambiguity resolution accuracy; data analysis; ground based GPS real time water vapor retrieval; ground-based GPS data; real-time data; sliding time window; standard deviation; troposphere; Computers; Ground-based GPS; Real-time Solution; Sliding Time Window;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
Type :
conf
DOI :
10.1109/ICEOE.2011.6013520
Filename :
6013520
Link To Document :
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