Dr. Hideki Takenaka Profile

Dr. Hideki Takenaka

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Publications (20)

Proceedings Article | 11 June 2021 Open Access

Accuracy of satellite orbit prediction and optical design of optical ground station beacons for satellite-to-ground optical communication

H. Takenaka, H. Kunimori, S. Fujita, T. Kuwahara, T. Kubooka, T. Fuse, M. Toyoshima

Proceedings Volume 11852, 118522C (2021) https://doi.org/10.1117/12.2599372

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Proceedings Article | 11 June 2021 Open Access

Performance analysis of polar-code transmission experiments over 7.8-km terrestrial free-space optical link using channel equalization

Shingo Fujia, E. Okamoto, H. Takenaka, H. Kunimori, H. Endo, M. Fujiwara, R. Shimizu, M. Sasaki, M. Toyoshima

Proceedings Volume 11852, 118525K (2021) https://doi.org/10.1117/12.2599963

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Proceedings Article | 11 June 2021 Open Access

Study on application of polar codes to information reconciliation in free-space quantum key distribution

Yuma Yamashita, Hiroyuki Endo, Shingo Fujita, Eiji Okamoto, Hideki Takenaka, Morio Toyoshima

Proceedings Volume 11852, 118525L (2021) https://doi.org/10.1117/12.2599964

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Proceedings Article | 12 July 2019 Open Access

Assembly and integration of optical downlink terminal VSOTA on microsatellite RISESAT

Hannah Tomio, Toshinori Kuwahara, Shinya Fujita, Yuji Sato, Morokot Sakal, Hiroo Kunimori, Toshihiro Kubooka, Hideki Takenaka, Yoshihiko Saito, Morio Toyoshima

Proceedings Volume 11180, 111805Z (2019) https://doi.org/10.1117/12.2536134

KEYWORDS: Satellites, Optical communications, Transmitters, Optical tracking, Satellite communications, Integrated optics, Optical fabrication, Adaptive optics, Laser development, Modulation

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Proceedings Article | 12 July 2019 Open Access

Research and Development of a Transportable Ground Optical Station in NICT

Yoshihiko Saito, Yasushi Munemasa, Hideki Takenaka, Hiroo Kunimori, Dimitar Kolev, Alberto Carrasco-Casado, Yoshisada Koyama, Koichi Shiratama, Toshihiro Kubo-oka, Morio Toyoshima

Proceedings Volume 11180, 111805S (2019) https://doi.org/10.1117/12.2536127

KEYWORDS: Telescopes, Free space optics, Active optics, Satellites, Optical communications, Satellite communications, Roads, Optical benches, Telecommunications, Receivers

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Proceedings Article | 12 July 2019 Open Access

Development of “HICALI”: high speed optical feeder link system between GEO and ground

T. Kubo-oka, H. Kunimori, K. Suzuki, Y. Koyama, K. Shiratama, Y. Munemasa, H. Takenaka, D. Kolev, A. Carrasco Casado, T. Phuc, M. Toyoshima

Proceedings Volume 11180, 1118060 (2019) https://doi.org/10.1117/12.2536135

KEYWORDS: Optical communications, Satellite communications, Satellites, Telecommunications, Adaptive optics, Telescopes, Atmospheric optics, Astronomical imaging, Data communications, RF communications

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Proceedings Article | 12 July 2019 Open Access

Feasibility study of a scalable laser communication terminal in NICT for next-generation space networks

Yasushi Munemasa, Yoshihiko Saito, Alberto Carrasco-Casado, Phuc Trinh, Hideki Takenaka, Toshihiro Kubo-oka, Koichi Shiratama, Morio Toyoshima

Proceedings Volume 11180, 111805W (2019) https://doi.org/10.1117/12.2536131

KEYWORDS: Telecommunications, Satellites, Laser communications, Satellite communications, Optical communications, Ka band, RF communications, Relays, Laser development, Data communications

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Proceedings Article | 4 March 2019 Paper

Research and development of highly secure free-space optical communication system for mobile platforms in NICT

Yoshihiko Saito, Hiroyuki Endo, Hideki Takenaka, Yasushi Munemasa, Mikio Fujiwara, Alberto Carrasco-Casado, Phuc Trinh, Mitsuo Kitamura, Toshihiro Kubo-oka, Masahiro Takeoka, Masahide Sasaki, Morio Toyoshima

Proceedings Volume 10910, 109100I (2019) https://doi.org/10.1117/12.2513873

KEYWORDS: Telecommunications, Free space optics, Transmitters, Telescopes, Satellites, Receivers, Free space optical communications, Quantum key distribution, Satellite communications, Quantum communications

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Proceedings Article | 14 May 2018 Paper

QKD from a microsatellite: the SOTA experience

Alberto Carrasco-Casado, Hideki Takenaka, Mikio Fujiwara, Mitsuo Kitamura, Masahide Sasaki, Morio Toyoshima

Proceedings Volume 10660, 106600B (2018) https://doi.org/10.1117/12.2309624

KEYWORDS: Quantum key distribution, Satellites, Polarization, Receivers, Telescopes, Quantum communications, Satellite communications, Information security, Photons, Beam splitters

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Proceedings Article | 15 February 2018 Presentation + Paper

Design status of the development for a GEO-to-ground optical feeder link, HICALI

Yasushi Munemasa, Tetsuharu Fuse, Toshihiro Kubo-oka, Hiroo Kunimori, Dimitar Kolev, Alberto Carrasco-Casado, Hideki Takenaka, Yoshihiko Saito, Phuc Viet Trinh, Kenji Suzuki, Yoshisada Koyama, Morio Toyoshima

Proceedings Volume 10524, 105240F (2018) https://doi.org/10.1117/12.2291881

KEYWORDS: Satellites, Telecommunications, Satellite communications, Optical communications, Laser communications, Ka band, Laser development, Data communications, RF communications, Radio optics

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Proceedings Article | 25 September 2017 Open Access

Experimental results of satellite-to-ground laser communications link through atmospheric turbulence using SOTA

Hideki Takenaka, Dimitar Kolev, Yoshisada Koyama, Maki Akioka, Yasushi Munemasa, Hiroo Kunimori, Morio Toyoshima

Proceedings Volume 10562, 105624A (2017) https://doi.org/10.1117/12.2296179

KEYWORDS: Satellites, Space telescopes, Telescopes, Sensors, Satellite communications, Astronomical imaging, Laser communications, Optical communications, Data communications, Scintillation

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Proceedings Article | 25 September 2017 Open Access

Sota optical downlinks to DLR’s optical ground stations

Christian Fuchs, Dimitar Kolev, Florian Moll, Amita Shrestha, Martin Brechtelsbauer, Fabian Rein, Christopher Schmidt, Maki Akioka, Yasushi Munemasa, Hideki Takenaka, Morio Toyoshima

Proceedings Volume 10562, 1056247 (2017) https://doi.org/10.1117/12.2296107

KEYWORDS: Space telescopes, Telescopes, Satellites, Cameras, Astronomical imaging, Optical tracking, Sensors, Optical communications, Satellite communications, Transponders

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Proceedings Article | 25 September 2017 Open Access

Development of a breadboard model of space laser communication terminal for optical feeder links from Geo

T. Fuse, M. Akioka, D. Kolev, Y. Koyama, T. Kubo-oka, H. Kunimori, K. Suzuki, H. Takenaka, Y. Munemasa, M. Toyoshima

Proceedings Volume 10562, 105622X (2017) https://doi.org/10.1117/12.2296224

KEYWORDS: Laser communications, Satellites, Optics manufacturing, Satellite communications, Data communications, Astronomical imaging, Optical communications, Aerospace engineering, Communication and information technologies, Manufacturing

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Proceedings Article | 25 September 2017 Open Access

Application of spinal code for performance improvement in free-space optical communications

Naoya Saiki, Eiji Okamoto, Hideki Takenaka, Morio Toyoshima

Proceedings Volume 10562, 105622Q (2017) https://doi.org/10.1117/12.2296175

KEYWORDS: Satellites, Satellite communications, Free space optics, Remote sensing, Computer programming, Astronomical imaging, Laser communications, Forward error correction, Free space optical communications, Scintillation

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Proceedings Article | 15 March 2016 Paper

Telecom and scintillation first data analysis for DOMINO: laser communication between SOTA, onboard SOCRATES satellite, and MEO optical ground station

D.-H. Phung, E. Samain, N. Maurice, D. Albanesse, H. Mariey, M. Aimar, G. M. Lagarde, G. Artaud, J.-L. Issler, N. Vedrenne, M.-T. Velluet, M. Toyoshima, M. Akioka, D. Kolev, Y. Munemasa, H. Takenaka, N. Iwakiri

Proceedings Volume 9739, 973909 (2016) https://doi.org/10.1117/12.2218524

KEYWORDS: Satellites, Telescopes, Sensors, Zoom lenses, Doppler effect, Clouds, Scintillation, Photonic integrated circuits, Modulation, Space telescopes

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Proceedings Article | 15 March 2016 Paper

In-orbit verification of small optical transponder (SOTA): evaluation of satellite-to-ground laser communication links

Hideki Takenaka, Yoshisada Koyama, Maki Akioka, Dimitar Kolev, Naohiko Iwakiri, Hiroo Kunimori, Alberto Carrasco-Casado, Yasushi Munemasa, Eiji Okamoto, Morio Toyoshima

Proceedings Volume 9739, 973903 (2016) https://doi.org/10.1117/12.2214461

KEYWORDS: Free space optics, Satellites, Transponders, Satellite communications, Optical communications, Laser communications, Atmospheric propagation, Error analysis, Forward error correction, Sensors, Optical design, Atmospheric optics

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Proceedings Article | 6 March 2014 Paper

Introduction of a terrestrial free-space optical communications network facility: IN-orbit and Networked Optical ground stations experimental Verification Advanced testbed (INNOVA)

Morio Toyoshima, Yasushi Munemasa, Hideki Takenaka, Yoshihisa Takayama, Yoshisada Koyama, Hiroo Kunimori, Toshihiro Kubooka, Kenji Suzuki, Shinichi Yamamoto, Shinichi Taira, Hiroyuki Tsuji, Isao Nakazawa, Maki Akioka

Proceedings Volume 8971, 89710R (2014) https://doi.org/10.1117/12.2044181

KEYWORDS: Optical communications, Free space optical communications, Optical networks, Data communications, Satellites, Free space optics, Satellite communications, Telecommunications, Data centers, Control systems

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Proceedings Article | 10 February 2012 Paper

Current development status of Small Optical TrAnsponder (SOTA) for satellite-ground laser communications

Yoshihisa Takayama, Morio Toyoshima, Yoshisada Koyama, Hideki Takenaka, Maki Akioka, Koichi Shiratama, Ichiro Mase, Osamu Kawamoto

Proceedings Volume 8246, 824607 (2012) https://doi.org/10.1117/12.913254

KEYWORDS: Satellites, Satellite communications, Laser communications, Transponders, Sensors, Data communications, Modulation, Optical communications, Quantum key distribution, Optical tracking

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Proceedings Article | 4 May 2010 Paper

Frequency characteristics of atmospheric turbulence in space-to-ground laser links

Morio Toyoshima, Hideki Takenaka, Yozo Shoji, Yoshihisa Takayama

Proceedings Volume 7685, 76850G (2010) https://doi.org/10.1117/12.850149

KEYWORDS: Satellites, Atmospheric turbulence, Optical filters, Satellite communications, Telescopes, Laser communications, Space telescopes, Antennas, Avalanche photodetectors, Atmospheric optics

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Proceedings Article | 26 February 2010 Paper

Study on the fiber coupling efficiency for ground-to-satellite laser communication links

Hideki Takenaka, Morio Toyoshima

Proceedings Volume 7587, 75870U (2010) https://doi.org/10.1117/12.845775

KEYWORDS: Fiber couplers, Laser communications, Fiber coupled lasers, Satellites, Atmospheric turbulence, Satellite communications, Telecommunications, Fiber lasers, Optical communications, Free space optical communications

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Showing 5 of 20 publications

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