Yoshisada Koyama

606 total citations
40 papers, 446 citations indexed

About

Yoshisada Koyama is a scholar working on Electrical and Electronic Engineering, Aerospace Engineering and Artificial Intelligence. According to data from OpenAlex, Yoshisada Koyama has authored 40 papers receiving a total of 446 indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Electrical and Electronic Engineering, 21 papers in Aerospace Engineering and 7 papers in Artificial Intelligence. Recurrent topics in Yoshisada Koyama's work include Optical Wireless Communication Technologies (24 papers), Satellite Communication Systems (15 papers) and Spacecraft Design and Technology (10 papers). Yoshisada Koyama is often cited by papers focused on Optical Wireless Communication Technologies (24 papers), Satellite Communication Systems (15 papers) and Spacecraft Design and Technology (10 papers). Yoshisada Koyama collaborates with scholars based in Japan, United States and Netherlands. Yoshisada Koyama's co-authors include Morio Toyoshima, Hideki Takenaka, Yoshihisa Takayama, Hiroo Kunimori, Koichi Shiratama, Yozo Shoji, Maki Akioka, Takashi Jono, Yasushi Munemasa and Dimitar Kolev and has published in prestigious journals such as Optics Express, Acta Astronautica and International Conference on Space Optics — ICSO 2018.

In The Last Decade

Yoshisada Koyama

36 papers receiving 413 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Yoshisada Koyama Japan 11 308 159 151 95 36 40 446
Katsuyoshi Arai Japan 13 386 1.3× 214 1.3× 150 1.0× 38 0.4× 31 0.9× 26 514
Reinhard H. Czichy Netherlands 12 400 1.3× 166 1.0× 167 1.1× 26 0.3× 42 1.2× 24 488
Donald M. Cornwell United States 9 335 1.1× 156 1.0× 100 0.7× 32 0.3× 19 0.5× 26 469
Yoshinori Arimoto Japan 13 362 1.2× 105 0.7× 147 1.0× 26 0.3× 40 1.1× 63 447
Benoit Demelenne Japan 8 238 0.8× 112 0.7× 91 0.6× 20 0.2× 19 0.5× 10 304
Nicolas Perlot Germany 15 542 1.8× 265 1.7× 172 1.1× 40 0.4× 39 1.1× 53 612
Markus Knapek Germany 12 417 1.4× 267 1.7× 102 0.7× 32 0.3× 29 0.8× 18 513
Ramon Mata Calvo Germany 13 424 1.4× 188 1.2× 153 1.0× 17 0.2× 41 1.1× 58 499
Berry Smutny Germany 7 260 0.8× 112 0.7× 82 0.5× 14 0.1× 16 0.4× 20 320
G.G. Ortiz United States 11 303 1.0× 115 0.7× 113 0.7× 11 0.1× 29 0.8× 50 403

Countries citing papers authored by Yoshisada Koyama

Since Specialization
Citations

This map shows the geographic impact of Yoshisada Koyama'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 Yoshisada Koyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Yoshisada Koyama more than expected).

Fields of papers citing papers by Yoshisada Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Yoshisada Koyama. 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 Yoshisada Koyama. The network helps show where Yoshisada Koyama may publish in the future.

Co-authorship network of co-authors of Yoshisada Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Yoshisada Koyama. A scholar is included among the top collaborators of Yoshisada Koyama 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 Yoshisada Koyama. Yoshisada Koyama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Munemasa, Yasushi, Dimitar Kolev, Tetsuharu Fuse, et al.. (2018). Design status of the development for a GEO-to-ground optical feeder link, HICALI. 15–15. 4 indexed citations
2.
Carrasco‐Casado, Alberto, Hiroo Kunimori, Hideki Takenaka, et al.. (2016). LEO-to-ground polarization measurements aiming for space QKD using Small Optical TrAnsponder (SOTA). Optics Express. 24(11). 12254–12254. 33 indexed citations
3.
Munemasa, Yasushi, Hideki Takenaka, Maki Akioka, et al.. (2015). Initial Overview of Satellite-ground Laser Communication Experiment using Small Optical TrAnsponder (SOTA). IEICE Technical Report; IEICE Tech. Rep.. 115(241). 75–79. 2 indexed citations
4.
Munemasa, Yasushi, Yoshisada Koyama, Maki Akioka, & Morio Toyoshima. (2015). A Feasibility Study of an Optical Antenna Measuring on LEO Using Small Optical TrAnsponder (SOTA). IEICE Technical Report; IEICE Tech. Rep.. 115(287). 31–34. 1 indexed citations
5.
Toyoshima, Morio, Tetsuharu Fuse, Dimitar Kolev, et al.. (2015). Current status of research and development on space laser communications technologies and future plans in NICT. 1–5. 14 indexed citations
6.
Toyoshima, Morio, Yasushi Munemasa, Hideki Takenaka, et al.. (2014). Introduction of a terrestrial free-space optical communications network facility: IN-orbit and Networked Optical ground stations experimental Verification Advanced testbed (INNOVA). Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8971. 89710R–89710R. 7 indexed citations
7.
Toyoshima, Morio, Yasushi Munemasa, Hideki Takenaka, et al.. (2013). Study on atmospheric turbulence for laser communications for micro-satellites and its applicability to the satellite communications scenario. 113(32). 31–38. 1 indexed citations
8.
Toyoshima, Morio, Hideki Takenaka, Yoshisada Koyama, et al.. (2013). Terrestrial Free-Space Optical Communications Network for Future Airborne and Satellite-Based Optical Communications Projects. 3 indexed citations
9.
Takayama, Yoshihisa, et al.. (2012). Studies for simplified optical ground station. 112(150). 37–42. 2 indexed citations
10.
Toyoshima, Morio, Takashi Sasaki, Hideki Takenaka, et al.. (2012). Verification Plan of Basic Quantum Key Distribution Experiments by Using a Small Satellite. TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES AEROSPACE TECHNOLOGY JAPAN. 10(ists28). Pj_9–Pj_15. 1 indexed citations
11.
Koyama, Yoshisada, Morio Toyoshima, Yoshihisa Takayama, & Hideki Takenaka. (2012). The uplink data received by OICETS. 59. 117–123. 5 indexed citations
12.
Takayama, Yoshihisa, Morio Toyoshima, Yoshisada Koyama, et al.. (2012). Current development status of Small Optical TrAnsponder (SOTA) for satellite-ground laser communications. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8246. 824607–824607. 4 indexed citations
13.
Takayama, Yoshihisa, Yoshisada Koyama, & Morio Toyoshima. (2011). Studies for simplified optical ground stations by using multimode fibers (衛星通信). 111(336). 147–151. 1 indexed citations
14.
Takayama, Yoshihisa, Yoshisada Koyama, Yozo Shoji, & Morio Toyoshima. (2011). Studies on operation characteristics of triaxial telescope for satellite-ground laser communications. 19. 67–71. 1 indexed citations
15.
Takenaka, Hideki, Morio Toyoshima, Yoshihisa Takayama, Yoshisada Koyama, & Maki Akioka. (2011). Experiment plan for a small optical transponder onboard a 50 kg-class small satellite. 17. 113–116. 6 indexed citations
16.
Toyoshima, Morio, Hideki Takenaka, Yozo Shoji, et al.. (2009). Polarization measurements through space-to-ground atmospheric propagation paths by using a highly polarized laser source in space. Optics Express. 17(25). 22333–22333. 82 indexed citations
17.
Jono, Takashi, Yoshihisa Takayama, Yoshisada Koyama, et al.. (2006). OICETS on-orbit laser communication experiments. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 6105. 610503–610503. 79 indexed citations
18.
Shiratama, Koichi, et al.. (2006). On-orbit test results of Laser Utilizing Communications Equipment (LUCE) on Optical Inter-orbit Communications Engineering Test Satellite (OICETS). IEICE Technical Report; IEICE Tech. Rep.. 106(107). 63–68. 1 indexed citations
19.
Koyama, Yoshisada, et al.. (2003). Evaluation of a high-power optical amplifier for intersatellite links. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 4975. 164–164. 1 indexed citations
20.
Nakagawa, Masayuki, et al.. (2003). Development of Thermal Control for Phased Array Antenna. 13 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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