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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| UWT (2nd) |
2023-11-27 12:55 |
Shiga | Ritsumeikan University Biwako-Kusatsu Campus (BKC) | Confirmation of the effectiveness of multi-beam transmission for application to underwater optical communications Naoki Kobayashi, Ayana Oku, Taiga Manabe, Yoshihisa Takayama (Tokai Univ) |
In this paper, we confirm the effectiveness of multi-beam transmission for application to underwater optical communicati... [more] | |
| ICSS, IPSJ-SPT | 2023-03-13 12:50 |
Okinawa | Okinawaken Seinenkaikan (Primary: On-site, Secondary: Online) |
Dynamic Fake QR Code using Invisible Laser Irradiation Yuki Kamata, Shuya Kawaguchi, Toshihiro Ohigashi, Yoshihisa Takayama (Tokai Univ.)  ICSS2022-49 |
In this paper, we propose a method to generate a fake QR code that can lead to a malicious site at any given time by las... [more] | ICSS2022-49 pp.7-12 |
| SR, UWT (Joint) |
2023-01-26 15:10 |
Tokyo | Takanawa Campus, Tokai Univ. (Primary: On-site, Secondary: Online) |
[Invited Talk]
Impact of fluctuating paths on optical transmission Yoshihisa Takayama (Tokai Univ.) |
[more] | |
| RCS, AP, UWT (Joint) |
2022-11-15 15:35 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Study on Prediction of Received Intensity Fluctuation in Underwater Optical Communication Using Machine Learning Hideki Takenaka, Shouken Ishii (TMU), Yoshihisa Takayama (TU) |
(To be available after the conference date) [more] | |
| SANE | 2022-08-18 17:45 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Optical ground station construction and steady technology acquisition for optical communications between space and ground
-- Space optical direct communication technology -- Tatsuya Mukai, Yosuke Hashimoto, Eiichi Mizuta, Tomohiro Araki (JAXA), Yoshihisa Takayama (TU) SANE2022-43 |
In addition to contemporary radio technologies, space agencies plan to adopt optical technologies to realize faster data... [more] | SANE2022-43 pp.56-61 |
| CQ, ICM, NS, NV (Joint) |
2021-11-25 11:30 |
Fukuoka | JR Hakata Stn. Hakata EkiHigashi Rental Room (Primary: On-site, Secondary: Online) |
Cloud avoidance network for high-speed optical communications between space and ground
-- Space optical direct communication technology -- Tatsuya Mukai (JAXA), Yoshihisa Takayama (TU), Takashi Onoe (TSOL) NS2021-86 |
Space agencies have ever used contemporary radio technologies for transmissions of a large volume of observation data fr... [more] | NS2021-86 pp.13-17 |
| WPT, UWT (Joint) |
2021-11-12 13:30 |
Online | Online | Estimation of fluctuation diameter affecting underwater propagating light Yoshihisa Takayama, Hiroki Yamashita (Tokai Univ.), Seigo Takahashi (Trimatiz) |
The validity of the approach to estimate the size of the fluctuation in water affecting to the propagation of light is e... [more] | |
| SANE, SAT (Joint) |
2021-02-18 11:00 |
Online | Online | Network operation measures by a laser ground network planning (LGNP)
-- Space optical direct communication technology -- Tatsuya Mukai (JAXA), Yoshihisa Takayama (TU), Takashi Asama, Nobuhiro Yagi (TIS) SANE2020-58 |
Based on OICETS experimental ground system and the IOAG/OLSG report, JAXA conducts the research and development of uniqu... [more] | SANE2020-58 pp.1-6 |
| SAT, SANE (Joint) |
2020-02-19 15:15 |
Okinawa | Development and operations of a transportanble optical ground station (TOGS) for space optical direct communications
-- Space optical communications technology -- Tatsuya Mukai (JAXA), Yoshihisa Takayama (TU), Tomohiro Araki (JAXA) SANE2019-105 |
The data volumes of space communication services connected between space and ground tends to increase more and more and ... [more] | SANE2019-105 pp.43-48 |
|
| RCS, IN, NV (Joint) |
2019-05-16 15:10 |
Kanagawa | Keio University | [Invited Talk]
Research trend of spatial optical communications with expanding applications Yoshihisa Takayama (Tokai Univ.) IN2019-7 RCS2019-28 |
A variety of applications of free-space laser propagation such as measurements, communications, energy transmissions, et... [more] | IN2019-7 RCS2019-28 pp.23-28(IN), pp.35-40(RCS) |
| SAT | 2015-10-07 15:55 |
Osaka | Osaka University Nakanoshima Center | Initial Overview of Satellite-ground Laser Communication Experiment using Small Optical TrAnsponder (SOTA) Yasushi Munemasa, Hideki Takenaka, Dimitar Kolev, Naohiko Iwakiri, Maki Akioka, Yoshisada Koyama, Hiroo Kunimori, Yoshihisa Takayama, Morio Toyoshima (NICT) SAT2015-32 |
Small Optical TrAnsponder (SOTA) has been launched and injected into 650 km-SSO on 24th May 2014, which is developed by ... [more] | SAT2015-32 pp.75-79 |
| SAT | 2015-10-07 16:20 |
Osaka | Osaka University Nakanoshima Center | A Proposal of Beaconless Ground to Satellite Laser Communication System by Using GPS Information Keiichi Yano (SIT), Yoshihisa Takayama (Tokai Univ.), Hiroo Kunimori (NICT), Koichi Gyoda (SIT) SAT2015-33 |
In a space laser communication between a ground station and a satellite, a beacon laser had been used in acquisition of ... [more] | SAT2015-33 pp.81-85 |
| SANE, SAT (Joint) |
2015-02-19 14:30 |
Okinawa | Okinawaken Shichoson Jichikaikan | Integration, Final Test and Orbital Initial Operation of SOTA onboard Small Satellite SOCRATES Maki Akioka, Yoshihisa Takayama, Yoshisada Koyama (NICT), Akira Miyake, Mamoru Yamada (AES) SAT2014-66 |
SOTA is a experimantal small optical communication instrument for orbital demonstration of 1.5 microns laser communicati... [more] | SAT2014-66 pp.91-95 |
| SAT | 2014-10-24 11:00 |
Overseas | Hae-un-dae Grand Hotel, Busan, Korea | Application of DIMM system to satellite tracking Tomohiro Watanabe (Tokyo Metropolitan Univ.), Yoshihisa Takayama, Hiroo Kunimori (NICT), Hajime Fukuchi (Tokyo Metropolitan Univ.) SAT2014-43 |
We study a possibility to share a single camera for both tracking of a received light and measuring atmosphere influence... [more] | SAT2014-43 pp.113-116 |
| CAS, SIP, MSS, VLD, SIS [detail] | 2014-07-09 16:40 |
Hokkaido | Hokkaido University | Dynamic wavefront compensation of signal beam in optical satellite communication system using phase conjugation technique Kaori Nishimaki, Atsushi Okamoto, Atsushi Shibukawa, Akihisa Tomita (Hokkaido Univ.), Yoshihisa Takayama (NICT) CAS2014-18 VLD2014-27 SIP2014-39 MSS2014-18 SIS2014-18 |
We propose an optical satellite communication system which can dynamically compensate the signal beam wavefront using ph... [more] | CAS2014-18 VLD2014-27 SIP2014-39 MSS2014-18 SIS2014-18 pp.87-92 |
| SAT, WBS (Joint) |
2014-05-15 17:05 |
Aichi | Nagoya Institute of Technology | [Special Talk]
Status and plans of space laser communications Yoshihisa Takayama (NICT) WBS2014-4 SAT2014-6 |
Demonstrations on satellite laser communications are summarized. Besides, project plans of space agencies and the recent... [more] | WBS2014-4 SAT2014-6 pp.19-23(WBS), pp.27-31(SAT) |
| SAT | 2013-10-24 13:25 |
Fukuoka | IP CITY HOTEL Fukuoka | On very small satellite mission SOCRATES for space optical communication experiment Maki Akioka, Yoshihisa Takayama, Yoshisada Koyama (NICT), Akira Miyake, Mamoru Yamada (AES) SAT2013-36 |
We are developing very small satellite mission SOCRATES (Space Optical Communication Research Advanced Technology Satell... [more] | SAT2013-36 pp.33-37 |
| AP, SAT (Joint) |
2013-07-24 10:55 |
Hokkaido | Sun Refre Hakodate | Concept of terrestrial free-space laser communications network for future airborne- and satellite-based laser communication projects Morio Toyoshima, Yasushi Munemasa, Hideki Takenaka, Yoshihisa Takayama, Yoshisada Koyama, Hiroo Kunimori, Toshihiro Kubo-oka, Kenji Suzuki, Shinichi Yamamoto, Shinichi Taira, Hiroyuki Tsuji, Isao Nakazawa, Maki Akioka (NICT) SAT2013-11 |
The communication capacity of satellite communications becomes very large because of the higher performance of onboard s... [more] | SAT2013-11 pp.1-4 |
| WBS, SAT (Joint) |
2013-05-16 16:35 |
Tochigi | Utsunomiya Univ. | [Special Talk]
Perspectives of channel coding for satellite laser communications Eiji Okamoto, Takuma Kyo, Hiroaki Inoue (Nagoya Inst. of Tech.), Yozo Shoji, Yoshihisa Takayama, Morio Toyoshima (NICT) WBS2013-6 SAT2013-5 |
Satellite laser communication, whose transmission channel characteristics are different from those of radio-frequency ch... [more] | WBS2013-6 SAT2013-5 pp.31-36(WBS), pp.25-30(SAT) |
| WBS, SAT (Joint) |
2013-05-17 10:30 |
Tochigi | Utsunomiya Univ. | Study on atmospheric turbulence for laser communications for micro-satellites and its applicability to the satellite communications scenario Morio Toyoshima, Yasushi Munemasa, Hideki Takenaka, Yoshihisa Takayama, Yoshisada Koyama, Toshihiro Kubo-oka, Hiroo Kunimori, Maki Akioka (NICT) SAT2013-6 |
[more] | SAT2013-6 pp.31-38 |
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