Zobrazeno 1 - 10
of 240
pro vyhledávání: '"Toyoshima Morio"'
Autor:
Carrasco-Casado, Alberto, Shiratama, Koichi, Kolev, Dimitar, Trinh, Phuc V., Ishola, Femi, Fuse, Tetsuharu, Toyoshima, Morio
Publikováno v:
Electronics 2022, 11(15), 2468
The Japanese National Institute of Information and Communications Technology (NICT) is currently developing a high-performance laser-communication terminal for CubeSats aiming at providing a high-datarate communication solution for LEO satellites req
Externí odkaz:
http://arxiv.org/abs/2208.08465
Autor:
Carrasco-Casado, Alberto, Shiratama, Koichi, Trinh, Phuc V., Kolev, Dimitar, Ishola, Femi, Fuse, Tetsuharu, Tsuji, Hiroyuki, Toyoshima, Morio
Publikováno v:
Proceedings of the 2022 IEEE International Conference on Space Optical Systems and Applications (ICSOS)
With the goal of meeting the diverse requirements of many different types of platforms, ranging from small drones to big satellites, and being applied in a variety of diverse scenarios, ranging from fixed terrestrial links to moving platforms in gene
Externí odkaz:
http://arxiv.org/abs/2207.00423
Autor:
Carrasco-Casado, Alberto, Shiratama, Koichi, Kolev, Dimitar, Trinh, Phuc V., Fuse, Tetsuharu, Fuse, Shingo, Kawaguchi, Koji, Hashimoto, Yusuke, Hyodo, Masamitsu, Sakamoto, Takashi, Kunisada, Terufusa, Toyoshima, Morio
Publikováno v:
Frontiers in Physics, Vol 10, 9 May 2022
Being able to dynamically control the transmitted-beam divergence can bring important advantages in free-space optical communications. Specifically, this technique can help to optimize the overall communications performance when the optimum laser-bea
Externí odkaz:
http://arxiv.org/abs/2205.06776
Autor:
Carrasco-Casado, Alberto, Shiratama, Koichi, Trinh, Phuc V., Kolev, Dimitar, Munemasa, Yasushi, Saito, Yoshihiko, Tsuji, Hiroyuki, Toyoshima, Morio
Publikováno v:
Proceedings of the 72nd International Astronautical Congress (IAC), Dubai, United Arab Emirates, 25-29 October 2021
Free-space optical communication is becoming a mature technology that has been demonstrated in space a number of times in the last few years. The Japanese National Institute of Information and Communications Technology (NICT) has carried out some of
Externí odkaz:
http://arxiv.org/abs/2111.08454
Autor:
Carrasco-Casado, Alberto, Do, Phong Xuan, Kolev, Dimitar, Hosonuma, Takayuki, Shiratama, Koichi, Kunimori, Hiroo, Trinh, Phuc V., Abe, Yuma, Nakasuka, Shinichi, Toyoshima, Morio
Publikováno v:
Proceedings of the 2019 IEEE International Conference on Space Optical Systems and Applications (ICSOS)
LEO-to-GEO intersatellite links using laser communications bring important benefits to greatly enhance applications such as downloading big amounts of data from LEO satellites by using the GEO satellite as a relay. By using this strategy, the total a
Externí odkaz:
http://arxiv.org/abs/2002.02791
Autor:
Carrasco-Casado, Alberto, Biswas, Abhijit, Fields, Renny, Grefenstette, Brian, Harrison, Fiona, Sburlan, Suzana, Toyoshima, Morio
Publikováno v:
Proceedings of the 2017 IEEE International Conference on Space Optical Systems and Applications (ICSOS)
CubeSats are excellent platforms to rapidly perform simple space experiments. Several hundreds of CubeSats have already been successfully launched in the past few years and the number of announced launches grows every year. These platforms provide an
Externí odkaz:
http://arxiv.org/abs/1811.03413
Autor:
Carrasco-Casado, Alberto, Takenaka, Hideki, Fujiwara, Mikio, Kitamura, Mitsuo, Sasaki, Masahide, Toyoshima, Morio
Publikováno v:
Proceedings of SPIE Defense + Commercial Sensing, Volume 10660, Quantum Information Science, Sensing, and Computation X; 106600B (2018)
The transmission and reception of polarized quantum-limited signals from space is of capital interest for a variety of fundamental-physics experiments and quantum-communication protocols. Specifically, Quantum Key Distribution (QKD) deals with the pr
Externí odkaz:
http://arxiv.org/abs/1810.12405
Autor:
Carrasco-Casado, Alberto, Shiratama, Koichi, Trinh, Phuc V., Kolev, Dimitar, Munemasa, Yasushi, Fuse, Tetsuharu, Tsuji, Hiroyuki, Toyoshima, Morio
Publikováno v:
In Acta Astronautica August 2022 197:1-5
Autor:
Carrasco-Casado, Alberto, Takenaka, Hideki, Kolev, Dimitar, Munemasa, Yasushi, Kunimori, Hiroo, Suzuki, Kenji, Fuse, Tetsuharu, Kubo-Oka, Toshihiro, Akioka, Maki, Koyama, Yoshisada, Toyoshima, Morio
Publikováno v:
Acta Astronautica, Vol. 139 (October 2017)
Free-space optical communications have held the promise of revolutionizing space communications for a long time. The benefits of increasing the bitrate while reducing the volume, mass and energy of the space terminals have attracted the attention of
Externí odkaz:
http://arxiv.org/abs/1708.01592
Autor:
Takenaka, Hideki, Carrasco-Casado, Alberto, Fujiwara, Mikio, Kitamura, Mitsuo, Sasaki, Masahide, Toyoshima, Morio
Recent rapid growth in the number of satellite-constellation programs for remote sensing and communications, thanks to the availability of small-size and low-cost satellites, provides impetus for high capacity laser communication (lasercom) in space.
Externí odkaz:
http://arxiv.org/abs/1707.08154