Toshimi Okada

408 total citations
27 papers, 321 citations indexed

About

Toshimi Okada is a scholar working on Astronomy and Astrophysics, Aerospace Engineering and Geophysics. According to data from OpenAlex, Toshimi Okada has authored 27 papers receiving a total of 321 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Astronomy and Astrophysics, 12 papers in Aerospace Engineering and 5 papers in Geophysics. Recurrent topics in Toshimi Okada's work include Ionosphere and magnetosphere dynamics (15 papers), GNSS positioning and interference (8 papers) and Radio Wave Propagation Studies (6 papers). Toshimi Okada is often cited by papers focused on Ionosphere and magnetosphere dynamics (15 papers), GNSS positioning and interference (8 papers) and Radio Wave Propagation Studies (6 papers). Toshimi Okada collaborates with scholars based in Japan, United States and Slovakia. Toshimi Okada's co-authors include Akira Iwai, Masashi Hayakawa, I. Nagano, Akira Morioka, Hiroshi Oya, Yoshihito Tanaka, Takayuki Ono, M. Iizima, K. Hashimoto and Hiroshi Miyaoka and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Geophysical Research Letters and Japanese Journal of Applied Physics.

In The Last Decade

Toshimi Okada

23 papers receiving 273 citations

Peers

Toshimi Okada

GEOPH

J. Oksman Finland

Tomohiko Imachi Japan

N. V. Romanova Russia

Michel Godefroy France

H. Bahcivan United States

D. M. Haines United States

B. E. Tossman United States

K. W. Chan Canada

П. А. Беспалов Russia

T. Ondoh Japan

J. Oksman Finland

Toshimi Okada

378 ×1.4

197 ×1.3

GEOPH

131 ×2.0

115 ×1.8

23 ×1.4

Citations per year, relative to Toshimi Okada Toshimi Okada (= 1×) peers J. Oksman

Countries citing papers authored by Toshimi Okada

Since Specialization

Citations

This map shows the geographic impact of Toshimi Okada's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Toshimi Okada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Toshimi Okada more than expected).

Fields of papers citing papers by Toshimi Okada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Toshimi Okada. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Toshimi Okada. The network helps show where Toshimi Okada may publish in the future.

Co-authorship network of co-authors of Toshimi Okada

This figure shows the co-authorship network connecting the top 25 collaborators of Toshimi Okada. A scholar is included among the top collaborators of Toshimi Okada based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Toshimi Okada. Toshimi Okada is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Okada, Toshimi, et al.. (2014). Understanding the “SEKKI” phenomena in Japanese historical literatures based on the modern science of low-latitude aurora. Earth Planets and Space. 56(12). e41–e44. 22 indexed citations

Okada, Toshimi, et al.. (2011). Estimation of spatial structure of lower ionosphere with two-dimensional FDTD simulations. e83 b. 1–4.

Li, Songsong, Toshimi Okada, Xiaohong Chen, & Hongwei Dai. (2007). Low Frequency Generation and Detection of the Lamb Wave A0 Mode Using EMAT. IEEJ Transactions on Electronics Information and Systems. 127(3). 367–372. 1 indexed citations

Ishisaka, Keigo, et al.. (2006). Estimation of Electron Density Profile in the Lower Ionosphere at Winter Nighttime by Rocket Observations of LF and MF Radio Waves. 89(10). 2012–2021. 1 indexed citations

Li, Songsong, Toshimi Okada, & Xiaohong Chen. (2006). Electromagnetic Acoustic Transducer for Generation and Detection of Guided Waves. Japanese Journal of Applied Physics. 45(5S). 4541–4541. 12 indexed citations

Holzworth, R. H., Edgar A. Bering, E. H. Lay, et al.. (2005). Balloon observations of temporal variation in the global circuit compared to global lightning activity. Advances in Space Research. 36(11). 2223–2228. 16 indexed citations

Chen, Xiaohong, et al.. (2005). A MODIFIED ERROR BACKPROPAGATION ALGORITHM FOR COMPLEX-VALUE NEURAL NETWORKS. International Journal of Neural Systems. 15(6). 435–443. 14 indexed citations

Kadokura, Akira, Hisao Yamagishi, Natsuo Sato, et al.. (2002). Polar Patrol Balloon experiment in Antarctica during 2002-2003. Institutional Repository National Institute of Polar Research (National Institute of Polar Research (Japan)). 16. 157–172. 1 indexed citations

Nagano, I., Satoshi Yagitani, Iwane Kimura, et al.. (1994). Full wave calculation method of VLF wave radiated from a dipole antenna in the ionosphere‐analysis of joint experiment by HIPAS and akebono satellite. Electronics and Communications in Japan (Part I Communications). 77(11). 59–71. 10 indexed citations

10.

Tsutsui, Minoru, Hirotsugu Kojima, I. Nagano, et al.. (1992). Magnetic Radiations from Harness Wires of Spacecraft. IEICE Transactions on Communications. 75(3). 174–182. 2 indexed citations

11.

Okada, Toshimi & I. Nagano. (1990). Rocket experiment of VLF and MF radio wave measurement by using a single loop antenna. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 73(2). 237–244. 2 indexed citations

12.

Oya, Hiroshi, Akira Morioka, M. Iizima, et al.. (1990). Plasma wave observation and sounder experiments(PWS) using the Akebono (EXOS-D) satellite. Instrumentation and initial results including discovery of the high altitude equatorial plasma turbulence.. Journal of geomagnetism and geoelectricity. 42(4). 411–442. 83 indexed citations

13.

Kimura, Iwane, K. Hashimoto, I. Nagano, et al.. (1990). VLF observations by the Akebono (EXOS-D) satellite.. Journal of geomagnetism and geoelectricity. 42(4). 459–478. 53 indexed citations

14.

Okada, Toshimi, I. Nagano, K. Hashimoto, et al.. (1987). Design of a small loop antenna system for receiving waves in VLF and MF bands using a series-transformer network. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 70(6). 550–561. 4 indexed citations

15.

Iwai, Akira, et al.. (1985). GROUND-BASED RECEPTION OF THE WHISTLER MODE DECCA SIGNALS. 32(32). 29–44. 6 indexed citations

16.

Okada, Toshimi, et al.. (1984). AN IMPROVED REAL TIME WHISTLER ANALYZER USING A MICROCOMPUTER SYSTEM. Journal of Atmospheric Electricity. 4(2). 71–80. 1 indexed citations

17.

Okada, Toshimi, et al.. (1983). Experimental study of the relationship between the propagation distance and the polarization characteristics of whistlers. Electronics and Communications in Japan (Part I Communications). 66(12). 72–79. 1 indexed citations

18.

Hayakawa, Masashi, et al.. (1981). Medium-Latitude VLF/ELF Emissions as Deduced from the Multi-Stationed Direction Finding Measurements. Memoirs of National Institute of Polar Research. Special issue. 18(18). 23–39. 2 indexed citations

19.

Okada, Toshimi, et al.. (1979). THE EFFECT OF THE EARTH-IONOSPHERE WAVEGUIDE PROPAGATION ON THE POLARIZATION AND ARRIVAL ANGLES OF WHISTLERS. 26. 17–33. 2 indexed citations

20.

Iwai, Akira, et al.. (1977). A REAL TIME WHISTLER ANALYZER. 24. 1–11. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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