Results 31 to 40 of about 653 (164)

Development of a New Tabular Zenith Tropospheric Delay Model for Real-Time GNSS Applications

IEEE Access, 2021
The tropospheric delay is a major error source for Global Navigation Satellite System (GNSS) positioning and navigation, and usually can be corrected by using an empirical model.
Jian Mao, Junyang Han, Tiejun Cui
doaj   +1 more source

Estimating Zenith Tropospheric Delays from BeiDou Navigation Satellite System Observations [PDF]

Sensors, 2013
The GNSS derived Zenith Tropospheric Delay (ZTD) plays today a very critical role in meteorological study and weather forecasts, as ZTDs of thousands of GNSS stations are operationally assimilated into numerical weather prediction models. Recently, the Chinese BeiDou Navigation Satellite System (BDS) was officially announced to provide operational ...
Xu, A., Xu, Z., Ge, M., Xu, X., Zhu, H., Sui, X.   +5 more
openaire   +5 more sources

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

Remote 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, Xin Li, Junlong Cheng, Galina Dick, Maorong Ge, Jens Wickert, Harald Schuh   +6 more
doaj   +1 more source

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

Earth 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   +1 more source

Prediction of tropospheric wet delay by an artificial neural network model based on meteorological and GNSS data

Engineering Science and Technology, an International Journal, 2020
Estimation of tropospheric wet delay is of great importance for real-time weather forecasting applications. In the last decade, based on troposphere wet delays obtained from Global Navigation Satellite System observations, high temporal and spatial ...
Mahmut Oguz Selbesoglu
doaj   +1 more source

A Simulation Study on Triple Frequency Ambiguity Resolution for Reference Stations Using Different Strategy Regarding Elevation angles [PDF]

E3S Web of Conferences, 2019
This paper proposes an ambiguity resolution method using triple frequency for reference stations. Using the reference coordinate information, geometry based ambiguity resolution performance is analysed. Although orbit errors and tropospheric model errors
Yu Sun-Kyoung, Kim Dong-uk, Song June-sol, Kee Changdon   +3 more
doaj   +1 more source

A New Global Tropospheric Delay Model Considering the Spatiotemporal Variation Characteristics of ZTD With Altitude Coefficient

Earth and Space Science, 2020
Tropospheric delay error is independent of the signal's frequency and has strong spatiotemporal variation. It is one of the most severe error sources of satellite navigation and spatial measurement. In view of the limitation of global zenith tropospheric
Peng Chen, Yongchao Ma, Hang Liu, Naiquan Zheng   +3 more
doaj   +1 more source

Unusual Enhancement of Stratospheric Ozone Observed Over the North Bay of Bengal: Results Inferred From NetRAD‐ASMA Campaigns‐2024

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract The present study examines the roles of advection and air compression in enhancing the stratospheric ozone layer over the North Bay of Bengal during winter. The most significant and novel observation reported is an increase in the stratospheric ozone layer between 21 and 23 km, with ozone partial pressure approximately 50 nbar higher than the ...
Siddarth Shankar Das, N. Poddar, A. K. Ghosh, M. V. Ratnam, A. Paul, M. Naja, S. Abhilash, S. Bhattacharjee, S. K. Das, M. Durga Rao, P. Nandakumar, V. Rakesh, K. N. Uma, V. Veenus, K. M. V. Prasad, S. V. Sunilkumar, D. S. Raj, N. Das, G. Pandithurai, Sunil Sonwabne, U. V. Muralikrishna, K. Raghunath   +21 more
wiley   +1 more source

MSWD: A Hybrid Machine‐Learning Framework for Slant Wet Delay Modeling

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 12, 28 June 2026.
Abstract Space geodetic techniques such as Global Navigation Satellite Systems (GNSS) and Very Long Baseline Interferometry (VLBI) are limited by direction‐dependent tropospheric delays, with slant wet delay (SWD) being the most variable component and a major error source.
Zhenyi Zhang, Benedikt Soja
wiley   +1 more source

Zenith Tropospheric Delay Forecasting in the European Region Using the Informer–Long Short-Term Memory Networks Hybrid Prediction Model

Atmosphere
Zenith tropospheric delay (ZTD) is a significant atmospheric error that impacts the Global Navigation Satellite System (GNSS). Developing a high-precision, long-term forecasting model for ZTD can provide valuable insights into the overall trends of ...
Zhengdao Yuan, Xu Lin, Yashi Xu, Jie Zhao, Nage Du, Xiaolong Cai, Mengkui Li   +6 more
doaj   +1 more source