scholarly journals A new technique for mapping of total electron content using GPS network in Japan

2002 ◽  
Vol 54 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Y. Otsuka ◽  
T. Ogawa ◽  
A. Saito ◽  
T. Tsugawa ◽  
S. Fukao ◽  
...  
2018 ◽  
Vol 72 (7) ◽  
pp. 826-834 ◽  
Author(s):  
Chalachew Kindie Mengist ◽  
Yong Ha Kim ◽  
Nicholas Ssessanga ◽  
Jeong-Heon Kim

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Takashi Maruyama ◽  
Kornyanat Hozumi ◽  
Guanyi Ma ◽  
Pornchai Supnithi ◽  
Napat Tongkasem ◽  
...  

AbstractA new technique was developed to estimate the ionospheric total electron content (TEC) from Global Navigation Satellite System (GNSS) satellite signals. The vertically distributed electron density was parameterized by two thin-shell layers (double-shell approach). The spatiotemporal variation of TEC (strictly speaking, partial electron content) associated with each shell was approximated by the functional fitting of spherical surface harmonics. The major improvements over the conventional single-shell approach were as follows: (1) the precise estimation of TEC was achieved; (2) the estimated TEC was less dependent on the choice of shell heights; and (3) the equatorial anomaly was captured more correctly. Furthermore, higher and lower shells exhibited a different pattern of local time vs latitude variation, providing information on the ionosphere–thermosphere dynamics.


Radio Science ◽  
2013 ◽  
Vol 48 (3) ◽  
pp. 302-309 ◽  
Author(s):  
M. N. Deviren ◽  
F. Arikan ◽  
O. Arikan

2017 ◽  
Vol 3 (1) ◽  
pp. 97-103
Author(s):  
Юрий Ясюкевич ◽  
Yury Yasyukevich ◽  
Анна Мыльникова ◽  
Anna Mylnikova ◽  
Всеволод Иванов ◽  
...  

We present a new technique for estimating the absolute vertical and slant total electron content (TEC). The estimation is based on single-frequency joint phase and pseudorange GPS/GLONASS measurements at single stations. Estimated single-frequency vertical TEC agrees qualitatively and quantitatively with the dual-frequency vertical TEC. For analyzed stations a typical value of the difference between the single-frequency vertical TEC and dual-frequency ones generally does not exceed ~1.5 TECU with RMS up to ~3 TECU.


2017 ◽  
Vol 3 (1) ◽  
pp. 128-137 ◽  
Author(s):  
Юрий Ясюкевич ◽  
Yury Yasyukevich ◽  
Анна Мыльникова ◽  
Anna Mylnikova ◽  
Всеволод Иванов ◽  
...  

We present a new technique for estimating the absolute vertical and slant total electron content (TEC). The estimation is based on single-frequency joint phase and pseudorange GPS/GLONASS measurements at single stations. Estimated single-frequency vertical TEC agrees qualitatively and quantitatively with the dual-frequency vertical TEC. For analyzed stations a typical value of the difference between the single-frequency vertical TEC and dual-frequency ones generally does not exceed ~1.5 TECU with RMS up to ~3 TECU.


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