A New Approach of the Global Navigation Satellite System Tomography for Any Size of GNSS Network
TLDR
A new approach that adjusts the GN SS tomographic model to adapt the size of the GNSS network is proposed, which is referred to as The High Flexibility GNSS Tomography (HFGT), which is a novel approach for GNSS tomography.Citations
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Local GPS tropospheric tomography
TL;DR: In this article, a formulation of local GPS tropospheric tomography for determining 4-D distribution of refractivity in the troposphere is presented together with a preliminary analysis of local dense GPS campaign data.
Journal ArticleDOI
A new hybrid observation GNSS tomography method combining the real and virtual inverted signals
TL;DR: Wang et al. as mentioned in this paper developed a hybrid observation GNSS tomography (HOGT) method, which constructs and introduces the virtual signals, inverted to the real rays, to address the acquisition geometry defect.
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An Investigation of Near Real-Time Water Vapor Tomography Modeling Using Multi-Source Data
TL;DR: In this article , a near real-time tomographic model is developed based on multi-source data including GNSS observations, Global Forecast System (GFS) products and surface meteorological data.
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Application of 3D Virtual Reality Sensor in Tourist Scenic Navigation System
TL;DR: Wang et al. as discussed by the authors proposed a scenic spot navigation system based on multimedia technology and component geographic information system (ComGIS), which takes Visual Basic 6.0, MapObjectst2.4, and GeoLOD 4.0 as the development platform and develops the tourism navigation system.
References
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An efficient algorith for determining the convex hull of a finite planar set
TL;DR: P can be chosen to I&E the centroid oC the triangle formed by X, y and z and Express each si E S in polar coordinates th origin P and 8 = 0 in the direction of zu~ arhitnry fixed half-line L from P.
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Estimation of tropospheric delay for microwaves from surface weather data
Jan Askne,H. Nordius +1 more
TL;DR: In this paper, the authors developed two methods to determine the tropospheric path delay for microwaves, one using a closed form model of the atmosphere in which two parameters are used to describe the decrease in temperature with height and the relation between total pressure and water vapor partial pressure, respectively.
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4D tropospheric tomography using GPS slant wet delays
TL;DR: In this article, Tomographic techniques are successfully applied to obtain 4D images of the tropospheric refractivity in a local dense network of global positioning system (GPS) receivers.
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4D Tropospheric Tomography using GPS Estimated Slant Delays
A. FloresG . Ruffini,A. Rius +1 more
TL;DR: In this article, GPS data is processed to obtain the tropospheric slant delays using the GIPSY-OASIS II software and define the concept of pseudo-wet delays, which will be the observables in the tomographic software.
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Water vapor‐weighted mean temperature and its impact on the determination of precipitable water vapor and its linear trend
TL;DR: In this paper, the water vapor-weighted mean temperature (T-m) at 368 GNSS stations for 2000-2012 were calculated using three methods: (1) temperature and humidity profiles from ERA-Interim, (2) the Bevis T-m-T-s relationship, and (3) the Global Pressure and Temperature 2 wet model.