Assessment of GNSS zenith tropospheric delay responses to atmospheric variables derived from ERA5 data over Nigeria

IU Nzelibe, H Tata, TO Idowu - Satellite Navigation, 2023 - Springer
Tropospheric delay is a major error caused by atmospheric refraction in Global Navigation
Satellite System (GNSS) positioning. The study evaluates the potential of the European …

Modelling weighted mean temperature in the West African region: Implications for GNSS meteorology

OA Isioye, L Combrinck, J Botai - Meteorological Applications, 2016 - Wiley Online Library
Weighted mean temperature (T m) is a critical parameter in the estimation of precipitable
water vapour from ground‐based Global Navigation Satellite System (GNSS) receivers. In …

Variability and accuracy of Zenith Total Delay over the East African tropical region

RC Ssenyunzi, B Oruru, FM D'ujanga, E Realini… - Advances in Space …, 2019 - Elsevier
Abstract The Global Navigation Satellite System (GNSS) can be used to derive accurately
the Zenith Tropospheric Delay (ZTD) under all-weather conditions. The derived ZTDs play a …

A new approach for improving GNSS geodetic position by reducing residual tropospheric error (RTE) based on surface meteorological data

M Bakota, S Kos, Z Mrak, D Brčić - Remote sensing, 2022 - mdpi.com
Positioning error components related to tropospheric and ionospheric delays are caused by
the atmosphere in positioning determined by global navigation satellite systems (GNSS) …

[HTML][HTML] GPT2w 模型在南极地区精度分析

孔建, 姚宜斌, 单路路, 王泽民 - 2018 - html.rhhz.net
GPT2w (global pressure and temperature 2 wet) 是目前应用较为广泛的对流层延迟经验模型
之一, 可提供气压, 温度, 水汽压等气象参数. 为验证和分析GPT2w 模型在南极地区的精度 …

An appraisal of the ECMWF Reanalysis5 (ERA5) model in estimating and monitoring atmospheric water vapour variability over Nigeria

S Bawa, OA Isioye, M Moses, L Abdulmumin - Geodesy and Cartography, 2022 - jau.vgtu.lt
This study research the performance of the ERA5 reanalysis model in estimating and
monitoring the variability of atmospheric water vapour content over Nigeria. The ERA5 is a …

AFRC-trop: new real-time zenith tropospheric delay model over Africa

M Abdelazeem - Journal of Surveying Engineering, 2021 - ascelibrary.org
This study aims to develop a new real-time zenith tropospheric delay (ZTD) model over
Africa, namely the AFRC-Trop model. In order to estimate the ZTD, global positioning system …

Realization of time-dependent geocentric datum transformation parameters for Nigeria

S Bawa, LM Ojigi, JD Dodo, KM Lawal - SN Applied Sciences, 2019 - Springer
Geodetic reference frames were established decades ago by classical surveying
techniques; however, due to biases caused by poor observation techniques and effects of …

Validation and Calibration of Tropospheric Wet Delay Models over Nigeria Using GPS Data

S Ogunjo, J Dada - Proceedings of the National Academy of Sciences …, 2024 - Springer
Tropospheric delay play a critical role in satellite communication. Due to lack of measuring
instruments, tropospheric wet delays are often estimated using empirical models. In this …

Comparing the Nigerian GNSS reference Network's Zenith Total Delays from precise point positioning to a numerical weather model

AO Mayaki, T Nikolaidou, M Santos… - … Symposium on Advancing …, 2019 - Springer
As a pivotal infrastructure for the socio-economic development of Nigeria, the Nigerian
Global Navigation Satellite Systems (GNSS) Reference Network–NIGNET–can serve as a …