Results 171 to 180 of about 3,196 (215)

Mathematical Modeling of Atmospheric Effects on Distance Determination Accuracy in the VDES R-Mode System. [PDF]

Sensors (Basel)
Bronk K, Koncicki P, Lipka A, Niski R, Wereszko B.   +4 more
europepmc   +1 more source

Assessing BeiDou-3 PPP-B2b with Signal-in-Space Ranging Error (SISRE) and Its Performances in Positioning and ZTD Estimation. [PDF]

Sensors (Basel)
Wang G, Li F, Zhou W, Chen G, Zhu Z, Jia X, An Q.   +6 more
europepmc   +1 more source

Establishment and Evaluation of Atmospheric Water Vapor Inversion Model Without Meteorological Parameters Based on Machine Learning. [PDF]

Sensors (Basel)
Liu N, Shen Y, Zhang S, Zhu X.
europepmc   +1 more source

Instability mapping of Dhaka-Kasiani-Gopalganj railway line in Bangladesh with InSAR time series analysis. [PDF]

Sci Rep
Kyaw KM, Takeuchi W.
europepmc   +1 more source

Impact of Tropospheric Delay Gradients on Total Tropospheric Delay and Precise Point Positioning

International Journal of Geosciences, 2016
GPS signals are electromagnetic waves that are affected by the Earth’s atmosphere. The Earth’s atmosphere can be categorized, according to its effect on GPS signals, into the ionosphere (ionospheric delay) and neutral atmosphere (tropospheric delay).
Mohamed Elsobeiey
exaly   +3 more sources

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Robust Modeling of GNSS Tropospheric Delay Dynamics

IEEE Transactions on Aerospace and Electronic Systems, 2021
In this article, we develop new stochastic tropospheric error models for positioning, fault detection, and integrity monitoring over time. We first perform time-domain and frequency-domain analyses of residual tropospheric delays observed over 12 months at multiple globally distributed locations. We then derive bounding error models for time-sequential
Elisa Gallon, Mathieu Joerger, Boris Pervan   +2 more
openaire   +1 more source

Computation of Troposphere Slant Delays on a GPU

IEEE Transactions on Geoscience and Remote Sensing, 2009
The computation of ray-traced troposphere delays which can be utilized for space geodetic applications is a time-consuming effort when a large number of rays has to be calculated. On the other hand, computation time can be tremendously reduced when algorithms are capable of supporting parallel processing architectures.
Thomas Hobiger, Ryuichi Ichikawa, Yasuhiro Koyama, Tetsuro Kondo   +3 more
openaire   +1 more source

Ray‐traced tropospheric delays in VLBI analysis

Radio Science, 2012
We develop a ray‐tracing package for the calculation of path delays of microwave signals in the troposphere based on numerical weather models which we use for the determination of the delays of geodetic Very Long Baseline Interferometry (VLBI) observations.
Nafisi, V., Madzak, M., J. Böhm, J., Ardalan, A., Schuh, H.   +4 more
openaire   +3 more sources

An impact of estimating tropospheric delay gradients on tropospheric delay estimations in the summer using the Japanese nationwide GPS array

Journal of Geophysical Research, 2003
We used various analysis strategies to evaluate zenith tropospheric delays (ZTDs) retrieved from the Japanese nationwide Global Positioning System (GPS) array in the summer of 1996. We compared results from the network solution obtained by daily routine data analyses and two‐point positioning analyses with and without a tropospheric delay gradient ...
Tetsuya Iwabuchi, Shin'Ichi Miyazaki, Kosuke Heki   +2 more
exaly   +2 more sources