Analysis of Galileo and GPS Integration for GNSS Tomography

被引：43
作者：
Benevides, P. [1 ]
Nico, G. [2 ]
Catalao, J. [1 ]
Miranda, P. M. A. [1 ]
机构：
[1] Univ Lisbon, Inst Dom Luiz, P-1749016 Lisbon, Portugal
[2] CNR, Inst Applicaz Calcolo, I-70126 Bari, Italy
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2017年 / 55卷 / 04期
关键词：
Galileo; global navigation satellite system (GNSS); global positioning system (GPS); GNSS tomography; troposphere; water vapor; WATER-VAPOR TOMOGRAPHY; SAR INTERFEROMETRY;
D O I：
10.1109/TGRS.2016.2631449
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Global Navigation Satellite System (GNSS) tomography provides 3-D reconstructions of atmosphere wet refractivity, related to water vapor. A simulated analysis of the integration of Global Positioning System and future Galileo data is presented. Atmospheric refractivity is derived from radiosonde data acquired over the Lisbon area. The impact of Galileo data on the tomographic reconstruction is assessed. Furthermore, horizontal anomalies are added to a reference vertical profile of atmospheric refractivity to reproduce low-level dry or wet air intrusions, a phenomenon commonly observed in meteorological data acquired by both radiosonde and satellites. The dependence of tomographic solution on the GNSS network density is also analyzed. Better reconstruction capabilities in the lower layers are observed when increasing the network density.
引用
收藏
页码：1936 / 1943
页数：8
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