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1 to 5 of 5 Results
Measuring Small- and Medium-Scale TEC Variations and Irregularities from Ground-Based GNSS Observations
Jan 25, 2021
Pi, Xiaoqing; Oveisgharan, Shadi; Tymofyeyeva, Ekaterina; Fattahi, Heresh; Rosen, Paul; Akopian, Vardan, 2021, "Measuring Small- and Medium-Scale TEC Variations and Irregularities from Ground-Based GNSS Observations", https://hdl.handle.net/2014/54291, VIRTUAL Institute of Navigation (ION) International Technical Meeting, San Diego, California, January 25-28, 2021, JPL Open Repository
This paper describes approaches to measuring small- and medium-scale spatial rate of vertical TEC from GNSS observations. The horizontal scale size measured by small-scale TEC spatial rate (STSR, in TECU/km), including its latitude and longitude components, ranges from about 1.8...
Measuring Small- and Medium-Scale Spatial TEC Variations and Irregularities from Ground-Based GNSS Observations
Jan 25, 2021
Pi, Xiaoqing; Oveisgharan, Shadi; Tymofyeyeva, Ekaterina; Fattahi, Heresh; Rosen, Paul; Akopian, Vardan, 2021, "Measuring Small- and Medium-Scale Spatial TEC Variations and Irregularities from Ground-Based GNSS Observations", https://hdl.handle.net/2014/54400, Institute of Navigation (ION) International Technical Meeting, San Diego, California, January 25-28, 2021, JPL Open Repository
No abstract provided
Recent advances in ionospheric specific specifications and new applications using GNSS measurements.
Jul 23, 2012
Komjathy, Attila; Butala, Mark; Pi, Xiaoqing; Ijima, Byron; Wilson, Brian; Akopian, Vardan; Mannucii, Anthony J., 2012, "Recent advances in ionospheric specific specifications and new applications using GNSS measurements.", https://hdl.handle.net/2014/42489, IGS Workshop, Olsztyn, Poland, July 23-27, 2012, JPL Open Repository
No abstract provided
Assessment of radio occultation observations to improve space weather nowcasts using the JPL/USC Global Assimilative Ionosphere Model
Mar 30, 2012
Mannucci, Anthony J.; Komjathy, Attila; Butala, Mark; Pi, Xiaoqing; Verkhoglyadova, Olga; Iijima, Byron; Wilson, Brian D.; Akopian, Vardan, 2012, "Assessment of radio occultation observations to improve space weather nowcasts using the JPL/USC Global Assimilative Ionosphere Model", https://hdl.handle.net/2014/42491, International Radio Occultation Working Group Workshop (IROWG) 2nd Workshop, Estes Park, Colorado, March 28 - April 3, 2012., JPL Open Repository
No abstract provided
Assimilative modeling of low-latitude ionosphere
May 1, 2005
Pi, Xiaoqing; Hajj, George A.; Wilson, Brian D.; Mandrake, Lukas; Mannucci, Anthony J.; Wang, Chunming; Akopian, Vardan, 2005, "Assimilative modeling of low-latitude ionosphere", https://hdl.handle.net/2014/37583, Proceedings of PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556), The 11th International Symposium on Equatorial Aeronomy, Taipei, Taiwan, May 9-14, JPL Open Repository
In this paper we present an observation system simulation experiment for modeling low-latitude ionosphere using a 3-dimensional (3-D) global assimilative ionospheric model (GAIM). The experiment is conducted to test the effectiveness of GAIM with a 4-D variational approach (4DVAR...
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