Results 161 to 170 of about 1,305 (202)

GPS-derived zenith tropospheric delay assimilation into numeric atmosphere model [PDF]

open access: yesSPIE Proceedings, 2014
© 2014 SPIE. The total zenith tropospheric delay (ZTD) is an important parameter of the atmosphere and directly or indirectly reflects the weather processes and variations. This paper presents a hardware and software complex for continuous measurements and prediction of atmospheric thermodynamics and radiowaves refraction index.
Khutorova O.   +3 more
openaire   +4 more sources

A new method for vertical stratification of zenith tropospheric delay

Advances in Space Research, 2019
Abstract Tropospheric delay is an important error source in space geodetic techniques. It varies significantly with height and the height dependent tropospheric error remains one of the major limitations in Global Navigation Satellite System (GNSS) techniques especially in Network Real-Time Kinematic (RTK) with significant topography variations ...
Yufeng Hu, Yibin Yao
exaly   +2 more sources

GPS zenith tropospheric delay (ZTD) variability in the Mediterranean

Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy, 2001
Abstract In the context of the MAGIC project (Meteorological Applications of GPS Integrated Column Water Vapor Measurements in the Western Mediterranean), zenith tropospheric delays (ZTD) are computed from Global Positioning System (GPS) signals at permanent sites in the western Mediterranean area continuously since November 1998.
Haase, J., Vedel, H., Ge, M., Calais, E.
openaire   +3 more sources

Application of ANFIS model for prediction of zenith tropospheric delay

2013 3rd International Conference on Instrumentation, Communications, Information Technology and Biomedical Engineering (ICICI-BME), 2013
Tropospheric delay plays a crucial role in meteorological studies and weather forecasts as well as positioning accuracy. GPS derived zenith tropospheric delay (ZTD) has been established two decades ago. However, the main problem that still present is not all strategic points around the world will have a GPS receiver. To solve this shortcoming, a neural
Wayan Suparta, Kemal Maulana Alhasa
openaire   +1 more source

Study on Tropospheric Zenith Delay Solved by GPS Data

2009 First International Conference on Information Science and Engineering, 2009
The tropospheric zenith delay of Great Wall station in Antarctic grouped with surrounding IGS stations is solved by GAMIT/GLOBK software using GPS observational data. In the process of solving, IGS final ephemeris and precision forecast ephemeris are used to solve the zenith delay in the software.
Yingchun Yue, Xiong Pan, Miao He
openaire   +1 more source

Model of mapping function for the calculation of zenith tropospheric delay

2013 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves, 2013
Today the global navigation satellite system (GNSS) are widely used in various fields related to the precise locations of consumers. High demand for these systems and the diversity of their use is a prerequisite for a detailed consideration of issues to increase their accuracy.
V.I. Lutsenko   +4 more
openaire   +1 more source

Preliminary Study on the Variation of Zenith Tropospheric Delay with Altitude

2013
Tropospheric delay is a major source of error for ground-to-air, air-to-ground observation and various types of radio navigation positioning technology, and it is usually corrected by tropospheric delay models for the majority of real-time navigation users.
Jingyang Zhao, Shuli Song, Wenyao Zhu
openaire   +1 more source

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