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Dr. Khaled Mahmoud Abdel Aziz :: Publications:

Title:
Accuracy assessment of free web-based online GPS processing services and relative GPS solution software
Authors: Khaled Mahmoud Abdel Aziz
Year: 2018
Keywords: Not Available
Journal: Journal of Geomatics
Volume: 12
Issue: 1
Pages: Not Available
Publisher: Indian Society of Geomatics
Local/International: International
Paper Link:
Full paper Khaled Mahmoud Abdel Aziz_Pap_10_JoG_Vol_1_No2_April_2018.pdf
Supplementary materials Not Available
Abstract:

Recently many organizations give a free automatic processing web based online services for processing the GPS observations for any place in the world whether relative GPS Processing solution or Precise Point Positioning (PPP) technique. In this research, baseline lengths of GPS network in Egypt are obtained by using the free automatic processing web based online services and compared with the baseline lengths computed by relative solution using the Trimble Baseness Center (TBC) commercial software at different observation times 1,2,3 and 4 hours. The automatic processing web based online services used in this research are with relative GPS solutions (AUSPOS and Trimble CenterPoint RTX post-processing) and with PPP technique (CSRS-PPP). The network baseline lengths at different observation times 1,2,3 and 4 hours are compared with the baseline lengths computed by a total time of observations by using the above different approaches. The maximum vector length errors obtained by using TBC, Trimble RTX, AUSPOS and CSRS-PPP at 1 hour are 0.015 m, 0.093 m 0.235 m and 0.075 m respectively, at 2 hours are 0.009 m, 0.066 m, 0.033 m and 0.061 m respectively, at 3 hours are 0.008 m, 0.017 m, 0.033 m and 0.016 m respectively and at 4 hours are 0.005 m, 0.019 m, 0.014 m and 0.021 m respectively. The relative GPS solution software (TBC) are observed to give better result at all observation times.

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