Estimation of The Zenith Path Delay using RTK-DGPS measurements

  • Reyam R. Muhammed Remote Sensing unit, College of Science, University of Baghdad, Iraq
  • Alaa S. Mahdi Remote Sensing unit, College of Science, University of Baghdad, Iraq

Abstract

In this paper, the method of estimating the variation of  Zenith Path Delay (ZPD) estimation method will be illustrate and evaluate using Real Time Kinematic Differential Global Positioning System (RTK-DGPS). The GPS provides a relative method to remotely sense atmospheric water vapor in any weather condition. The GPS signal delay in the atmosphere can be expressed as ZPD. In order to evaluate the results, four points had been chosen in the university of Baghdad campus to be rover ones, with a fixed Base point. For each rover position a 155 day of coordinates measurements was collected to overcome the results. Many models and mathematic calculations were used to extract the ZPD using the Matlab environment. The result shows that the ZPD values in mm depend on the water vapor intensity in the atmosphere and the mean temperatures. Also, the mean temperature model can be generated to calculate the Water Vapor Intensity( WVI(  for 20 km highest.

Published
Apr 29, 2018
How to Cite
MUHAMMED, Reyam R.; MAHDI, Alaa S.. Estimation of The Zenith Path Delay using RTK-DGPS measurements. Iraqi Journal of Science, [S.l.], p. 802-807, apr. 2018. ISSN 2312-1637. Available at: <http://scbaghdad.edu.iq/eijs/index.php/eijs/article/view/302>. Date accessed: 26 may 2018.
Section
Remote Sensing