Results 261 to 270 of about 1,145,330 (292)

Estimation of Total Electron Content using NavIC Signals

2020 URSI Regional Conference on Radio Science ( URSI-RCRS), 2020
Navigation with Indian Constellation (NavIC) formerly known as Indian Regional Navigation Satellite System (IRNSS) provides geo-spatial positioning with regional coverage over Indian landmass extended upto 1500 km. In general, NavIC have three main segments, namely the space segment, the ground segment and the user segment.
Anu Arora, Suresh Dakkumalla, T Subramanya Ganesh, Sharda Vashisth, Amitava Sen Gupta   +4 more
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Total Electron Content Studies in Equatorial Regions

Radio Science, 1970
This paper reviews current knowledge of the diurnal variation and spatial distribution of total electron content in the equatorial ionosphere. The problems of data reduction peculiar to stations near the equator are considered. There is a large diurnal variation up to 40∶1 that is greatest at the equinoxes and least in local winter.
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Plasmaspheric Total Electron Content Variations obtained from GPS Total Electron Content Data

Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023, 2023
Yuichi Otsuka, Zhiyu Chen, Atsuki Shinbori, Takuya Sori, Kazuo Shiokawa, Septi Perwitasari, Michi Nishioka, Fuminori Tsuchiya, Atsushi Kumamoto, Yoshiya Kasahara, Yoshizumi Miyoshi, Masahiro Kitahara, Satoko Nakamura, Ayako Matsuoka, Iku Shinohara   +14 more
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Total electron content obtained from ionogram data alone

Radio Science, 1992
A method to obtain the total electron content (TEC) of the ionosphere over Tucumán (26.9° S; 65.4° W), from ionogram data alone, is reported. To accomplish this, two Chapman profile expressions for the electron density (n) distribution in the F region are assumed, and a characteristic point of the n profile, called F region base point, is required ...
R. G. Ezquer, N. O. Adler, S. M. Radicella, M. M. Gonzalez, J. R. Manzano   +4 more
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Correlation analysis of vertical total electron content

Acta Geophysica, 2010
It is necessary to model and analyze the ionospheric effects due to a direct relationship between Global Positioning System (GPS) applications and changes in the ionosphere. In order to monitor these changes, the ionosphere can be represented by the vertical total electron content (VTEC) which can be used to analyze ionospheric conditions from a ...
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Predicted and measured total electron content over Havana

Journal of Atmospheric and Solar-Terrestrial Physics, 1997
Abstract The total electron content (TEC) of the ionosphere is a parameter often used to check the validity of ionospheric models. Moreover, it is very important for the systems which use transionospheric radio waves. In this paper, TEC measurements obtained with Faraday technique at Havana (23.1 °N, 277.5 °E, geomagnetic latitude: 34.2 °), Cuba ...
Ezquer, R.G., Jakowski, N., Jadur, C. A.
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Latitudinal effect on Total Electron Content variations

2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014
This work focuses on the latitudinal effect on the ionospheric parameters, in particular the Total Electron Content (TEC). Data of two IGS stations at Libreville, Gabon (9.6721°E, 0.3539°N), and at Ny-Alesund, Norway (11.8653°E, 78.9296°N) during February 2008 and July 2008 were analysed.
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Modeling the low latitude ionospheric total electron content

Journal of Atmospheric and Terrestrial Physics, 1985
Abstract The undisturbed ambient total electron content of the ionosphere in the equatorial region exhibits two characteristic features: 1. (i) a longitudinal behavior of the post-sunset variation of the ionization near the crests of the equatorial anomaly 2. (ii) an enhancement at lower latitudes following the post-sunset decay.
A. DasGupta, D.N. Anderson, J.A. Klobuchar   +2 more
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Total Electron Content Lunar Variation at Two Midlatitude Stations,

1980
Abstract : Total electron content data of a year of the Ebro and Hamilton stations have been analyzed by the Chapman-Miller method and the components of the solar and lunar tides at both stations obtained. The same analysis has been performed with the data grouped by seasons.
E. Galdon, J. O. Cardus, L. F. Alberca
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Statistical analysis of ionospheric total electron content [PDF]

, 2011
Certain modern radio systems that rely on trans-ionospheric propagation require knowledge of changes in total electron content (TEC). Understanding rapidly changing, small amplitude perturbations in the ionosphere is important in order to quantify the accuracy of those systems.
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