Japan Geoscience Union Meeting 2016

Presentation information


Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM16] Physics and Chemistry in the Atmosphere and Ionosphere

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Yuichi Otsuka(Solar-Terrestrial Environment Laboratory, Nagoya University), Takuya Tsugawa(National Institute of Information and Communications Technology), Seiji Kawamura(National Institute of Information and Communications Technology)

5:15 PM - 6:30 PM

[PEM16-P18] Rocket GPS-TEC Tomography method to obtain high altitude resolution

*Yutaro Ikehata1, Yuki Ashihara1 (1.Department of Electric and Information Engineering National Institute of Technology, Nara College)

Keywords:ionosphere, GPS-TEC, sounding rocket

In the high altitude atmosphere of the earth, there is a layer of atmosphere called ionosphere, filled with extricated electrons, and the observation of the electron density profile in the ionosphere is recently taken notice of.
As an approach to the observation of electron density profile in the ionosphere, there is the remote sensing method called GPS-TEC method, which calculates the total electron counts (TEC) on the transmission path of GPS wave, from its propagation delay. By applying tomography analysis on TEC values in multiple paths, which are one dimensional information, the electron distribution profile can be earned as two dimensional data, and this method is called GPS-TEC tomography method. However, this method has a defect, that it has low resolution in altitude direction.
In order to enhance the altitude resolution, we have proposed “Rocket GPS-TEC Tomography method,” which applies tomography analysis on the TEC values earned by rocket observation. Compared to the conventional GPS-TEC tomography, this method can observe TEC values in horizontal paths, as the observation rocket navigates in both range and altitude direction. By this approach, we assumed that altitude resolution of the tomography result will improve. In this study, we verified the efficacy of proposed method through simulation experiment.