Results 91 to 100 of about 1,516 (192)
ANALISIS NILAI ZENITH TROPOSPHERIC DELAY (ZTD) CORS ULPC UNILA DENGAN METODE PRECISE POINT POSITIONING (PPP) [PDF]
The propagation of GNSS signals from satellites orbiting at an altitude of approximately 22,000 km above the Earth's surface to the receiver must pass through the Earth's atmosphere.
Fajriyanto +3 more
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AtmosphereTo accurately estimate Zenith Tropospheric Delay (ZTD) for high-precision positioning of the Global Navigation Satellite System (GNSS), this study proposes a modeling method of ZTD based on the UNB3m model and Kriging spatial interpolation, in which the ...
Huineng Yan +5 more
doaj +1 more source
Reduction of ZTD outliers through improved GNSS data processing and screening strategies
, 2017 . Though Global Navigation Satellite System (GNSS) data processing has been significantly improved over years it is still commonly observed that Zenith Tropospheric Delay (ZTD) estimates contain many outliers which are detrimental to meteorological and ...
Katarzyna Stepniak +2 more
core +1 more source
Comparing Feature-Driven and Data-Driven Models for GNSS-Based ZTD Reconstruction
Zenith Total Delay (ZTD) derived from Global Navigation Satellite System (GNSS) observations is a critical parameter for precise positioning and atmospheric studies.
Bak, Mehmet, Tekin Ünlütürk, Nihal
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DESIGNATING THE ERROR OF VERTICAL COORDINATE OF AIRCRAFT POSITION IN THE GPS SYSTEM
Scientific Journal of Silesian University of Technology. Series Transport, 2020 This article presents the results of research concerning the determination of an error of the vertical position of an aircraft during a flight, taking into account, the flight altitude and the values of the ZTD tropospheric product.
Małgorzata KIRSCHENSTEIN +2 more
doaj +1 more source
Improving the forecast of intense rain events is very important to save lives and properties. In this paper we show the impact of lightning and Global Navigation Satellite System - Zenith Total Delay (GNSS-ZTD) data assimilation on the prediction of ...
Torcasio, Rosa Claudia +11 more
core +1 more source
Assimilating UAV-based GNSS ZTDs for Numerical Weather Predictions
In recent decades, various studies have demonstrated that assimilating tropospheric parameters from ground-based GNSS receivers benefits numerical weather predictions (NWPs). However, the achieved performance is limited by the spatial resolution of GNSS, especially in the vertical direction.
Zhenyi Zhang +8 more
openaire +2 more sources
Analisis nilai Zenith Tropospheric Delay (ZTD) menggunakan Data CORS di wilayah Jawa Timur tahun 2015-2018 [PDF]
, 2020 Global Navigation Satellite System (GNSS) kini dikembangkan sebagai sistem penginderaan jauh atmosfer melalui perhitungan Zenith Tropospheric Delay (ZTD). Salah satu komponen dalam ZTD adalah Zenith Wet Delay (ZWD). ZWD dipengaruhi oleh kandungan uap air
Mannani, Norma Aji Cemara
core
A New PatchTST-ZTD Forecasting Model Based on Different Global Climates and Its Performance in PPP
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingAccurate modeling of zenith tropospheric delay (ZTD) is crucial for real-time high-precision positioning in global navigation satellite systems (GNSS). Deep learning methods are capable of effectively capturing the complex temporal patterns of ZTD time ...
Zhiping Chen +9 more
doaj +1 more source
ZTD$_{JAVA}$: Mitigating Software Supply Chain Vulnerabilities via Zero-Trust Dependencies [PDF]
Third-party libraries like Log4j accelerate software application development but introduce substantial risk. Vulnerabilities in these libraries have led to Software Supply Chain (SSC) attacks that compromised resources within the host system.
Torres-Arias, Santiago +7 more
core