Title :
GPS tomography using phase observations
Author :
Nilsson, Tobias ; Gradinarsky, Lubomir ; Elgered, Gunnar
Author_Institution :
Onsala Space Obs., Chalmers Univ. of Technol., Onsala, Sweden
Abstract :
We present a tomographic method for retrieving the 3D structure of the tropospheric water vapor using GPS phase observation from a network of GPS receivers. We investigate the accuracy of this method through simulations. In these simulation also the impact of increasing the number of stations and including other Global Navigation Satellite Systems (GNSS) are investigated. We show that the wet refractivity below 4 km in height can be retrieved with an accuracy of 10-20% when using 25 station and 1 km vertical resolution.
Keywords :
Global Positioning System; atmospheric humidity; atmospheric techniques; data acquisition; remote sensing; troposphere; 3D structure retrieval; GNSS; GPS receivers; GPS tomography; Global Navigation Satellite Systems; phase observations; tropospheric water vapor; wet refractivity; Atmospheric waves; Clocks; Delay estimation; Global Positioning System; Phase estimation; Refractive index; Satellite navigation systems; Space technology; Terrestrial atmosphere; Tomography;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1369873
