Local tomography troposphere model over mountains area
Witold Rohm , Jarosław Bosy
AbstractThe term GNSS meteorology refers to the utilization of the Global Navigation Satellite System's (GNSS) radio signals to derive information about the state of the troposphere. GNSS tomography allows to resolve the spatial structure and temporal behavior of the tropospheric water vapor. This paper presents the verification of GNSS tomography over dense local GNSS network. The paper addresses the problem of obtaining a stable tomographic solution from an ill-conditioned system of linear equations. The main interests are in suitable horizontal and vertical resolution in given conditions. Here the Moore-Penrose pseudo inverse of variance-covariance matrix is used. The minimum constraints solution is obtained with no additional assumptions. The results are validated with the help of simulated weather conditions. Three various scenarios are tested. As general output of this paper the optimal model construction scheme is presented with possible further improvements. The verification of the tomography model based on the local GPS KARKONOSZE, situated in the Karkonosze mountains area in Poland. (C) 2009 Elsevier B.V. All rights reserved.
|Journal series||Atmospheric Research, ISSN 0169-8095, (A 25 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||GNSS meteorology; Tomography; Troposphere delay|
|Publication indicators||= 51; = 45; : 2009 = 1.19; : 2009 = 1.811 (2) - 2009=1.884 (5)|
|Citation count*||65 (2020-06-19)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.