Results 31 to 40 of about 2,145,064 (260)

An ERA5‐Based Model for Estimating Tropospheric Delay and Weighted Mean Temperature Over China With Improved Spatiotemporal Resolutions

open access: yesEarth and Space Science, 2019
Tropospheric delay is an important error source in Global Navigation Satellite System (GNSS) positioning and can also be used in water vapor monitoring.
Zhangyu Sun, Bao Zhang, Yibin Yao
doaj   +2 more sources

Real-Time Tropospheric Delay Retrieval from Multi-GNSS PPP Ambiguity Resolution: Validation with Final Troposphere Products and a Numerical Weather Model

open access: yesRemote Sensing, 2018
The multiple global navigation satellite systems (multi-GNSS) bring great opportunity for the real-time retrieval of high-quality zenith tropospheric delay (ZTD), which is a critical quality for atmospheric science and geodetic applications.
Cuixian Lu   +6 more
doaj   +3 more sources

PERFORMANCE OF NUMERICAL WEATHER PRODUCTS FOR INSAR TROPOSPHERIC CORRECTION: A CASE STUDY OF A TROPICAL REGION [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Tropospheric delay variability remains a significant source of error in the InSAR-derived measurements. Numerical weather models have been proposed as an alternative technique to mitigate tropospheric delays in InSAR and have become a standard procedure ...
P. Kirui, P. Kirui, B. Riedel, M. Gerke
doaj   +1 more source

Refined InSAR tropospheric delay correction for wide-area landslide identification and monitoring

open access: yesRemote Sensing of Environment, 2022
Yian Wang   +7 more
semanticscholar   +3 more sources

Regional Tropospheric Correction Model from GNSS–Saastamoinen–GPT2w Data for Zhejiang Province

open access: yesAtmosphere, 2023
Tropospheric delay models based on GNSS observations are essential for studying tropospheric changes. However, the uneven distribution of GNSS stations reduces the accuracy of GNSS tropospheric delay models in remote areas.
Chaoqian Xu   +6 more
doaj   +1 more source

Kriging Interpolation in Modelling Tropospheric Wet Delay [PDF]

open access: yesAtmosphere, 2020
This contribution implements the Kriging interpolation in predicting the tropospheric wet delays using global navigation satellite system networks. The predicted tropospheric delays can be used in strengthening the precise point positioning models and numerical weather prediction models.
Hongyang Ma   +4 more
openaire   +4 more sources

Multi-temporal InSAR tropospheric delay modelling using Tikhonov regularization for Sentinel-1 C-band data

open access: yesISPRS Open Journal of Photogrammetry and Remote Sensing, 2022
The increased availability of satellite SAR data coupled with improved InSAR processing algorithms has led to higher accuracy of InSAR-derived displacements.
Pius Kipngetich Kirui   +2 more
doaj   +1 more source

Tropospheric delay in microwave propagation in Nigeria [PDF]

open access: yesArabian Journal of Geosciences, 2021
Satellite communication systems suffer from the systematic error of tropospheric delay. Accurate estimation of this delay is essential for communication budget and planning. This study investigates the tropospheric delay in three Nigeria cities: Abuja, Lagos, Port-Harcourt using two different models (Saastominen and Hopfield).
Ogunjo, Samuel   +3 more
openaire   +2 more sources

Empirical Orthogonal Function Analysis and Modeling of Global Tropospheric Delay Spherical Harmonic Coefficients

open access: yesRemote Sensing, 2021
Based on the ERA-5 meteorological data from 2015 to 2019, we establish the global tropospheric delay spherical harmonic (SH) coefficients set called the SH_set and develop the global tropospheric delay SH coefficients empirical model called EGtrop using ...
Yongchao Ma   +3 more
doaj   +1 more source

Tropospheric Delay Calibrations for VERA [PDF]

open access: yesPublications of the Astronomical Society of Japan, 2008
Abstract We present techniques for the tropospheric delay calibration, which is the key to increasing the accuracy of the phase-referencing astrometry with Very Long Baseline Interferometry (VLBI). We study three methods, and make a comparison of these methods to discuss the accuracy in calibration.
Mareki Honma   +2 more
openaire   +1 more source

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