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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SAT, KOSST | 2023-10-11 11:15 |
Overseas | Central Hotel Marianne（Korea, Busan） (Overseas, Online) (Primary: On-site, Secondary: Online) |
An Advanced Proposal for the On-orbit Practical Experiment of LEO Satellite MIMO for 920MHz band IoT Sensing Platform Kiyohiko Itokawa, Daisuke Goto, Yasuyoshi Kojima, Kouhei Suzaki, Kazumitsu Sakamoto, Yousuke Fujino, Fumihiro Yamashita (NTT), Chihaya Kato, Mitsuhiro Nakadai, Masanobu Yajima (JAXA)  SAT2023-55 |
[more] | SAT2023-55 pp.39-44 |
| RCS, SAT (Joint) |
2023-08-31 16:20 |
Nagano | Naganoken Nokyo Building, and online (Nagano, Online) (Primary: On-site, Secondary: Online) |
[Encouragement Talk]
Comparative study of channel coding methods for performance improvement in next-generation optical satellite data relay system Eiji Okamoto, Yuma Yamashita (NITech), Yohei Satoh, Mitsuhiro Nakadai, Takamasa Itahashi, Shiro Yamakawa (JAXA) SAT2023-42 |
Optical satellite data relay systems which send high-capacity data observed by low-orbit user satellites to geostationar... [more] | SAT2023-42 pp.41-45 |
| AP, SANE, SAT (Joint) |
2022-07-29 14:30 |
Hokkaido | Asahikawa Taisetsu Crystal Hall (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Study on efficient channel coding method for next-generation optical satellite data relay system Eiji Okamoto, Yuma Yamashita (NITech), Yohei Satoh, Mitsuhiro Nakadai, Takamasa Itahashi, Shiro Yamakawa (JAXA) SAT2022-27 |
High-capacity satellite communications are continuously demanded, and one of the challenges is to realize a high-capacit... [more] | SAT2022-27 pp.57-62 |
| SANE | 2020-06-26 14:55 |
Online | Online (Online) | Study of on-orbit demonstration of VCM technology based on DVB-S2X by the rapid innovative payload demonstration satellite-2 (RAISE-2) Chihaya Kato, Mitsuhiro Nakadai, Masanobu Yajima (JAXA), Tsuyoshi Sasaki, Jin Miyazawa, Michiya Hayama (Mitsubishi Electric Corp.) SANE2020-13 |
With the improved sensor capabilities of Earth observation satellites in low Earth orbit (LEO), the volume of data trans... [more] | SANE2020-13 pp.25-30 |
| RCS, SAT (Joint) |
2019-08-22 13:05 |
Aichi | Nagoya University (Aichi) | [Invited Lecture]
Channel Capacity Analysis of LEO MIMO System Considering the Satellite Attitude Chihaya Kato, Mitsuhiro Nakadai (JAXA), Daisuke Goto, Hiroki Shibayama, Fumihiro Yamashita (NTT) SAT2019-24 RCS2019-153 |
With the improving sensor capabilities of Earth observation satellites and the introduction of the constellation service... [more] | SAT2019-24 RCS2019-153 pp.39-44 |
| SANE, SAT (Joint) |
2019-02-13 13:30 |
Kagoshima | Tanegashima Island (Kagoshima) | Analysis of the MIMO channel for LEO Satellites Chihaya Kato, Mitsuhiro Nakadai (JAXA), Daisuke Goto, Daiki Shibayama, Fumihiro Yamashita (NTT) SAT2018-60 |
In the Low Earth Orbital (LEO) Satellites, transmission data rate of the satellite communication is rapidly increasing t... [more] | SAT2018-60 pp.17-22 |
| SANE | 2018-06-22 15:40 |
Ibaraki | Tsukuba Space Center, JAXA (Ibaraki) | VCM System with Only Variable Modulation Scheduling According to Satellite Elevation Angle Chihaya Kato, Mitsuhiro Nakadai, Yajima Masanobu (JAXA) SANE2018-19 |
Recently, researches and developments of higher-order modulation and broadband telecommunication systems become more int... [more] | SANE2018-19 pp.33-37 |
| SANE | 2018-06-22 16:05 |
Ibaraki | Tsukuba Space Center, JAXA (Ibaraki) | Development of spread spectrum command receiver for space use Mitsuhiro Nakadai, Chihaya Kato, Masanobu Yajima (JAXA), Hideto Okada, Masanobu Ohtake, Chihiro Sakakibara (NEC Space) SANE2018-20 |
Although the spread spectrum achieves stable communication by suppressing interferer by spreading process, since the sat... [more] | SANE2018-20 pp.39-44 |
| WPT | 2016-03-07 15:45 |
Kyoto | Kyoto Univ. Uji Campus (Kyoto) | Examination for Improving Microwave Beam-pointing Control Accuracy Applied to Space Solar Power Systems Katsumi Makino, Daisuke Joudoi, Mitsuhiro Nakadai, Masanobu Yajima, Kazuo Ohashi (JAXA), Tomohiro Takahashi, Shuji Nuimura, Yukihiro Homma (MELCO) WPT2015-82 |
JAXA has developed a high-accuracy microwave beam-pointing controller for a wireless power transmission ground test and ... [more] | WPT2015-82 pp.33-37 |
| SAT | 2015-10-08 11:15 |
Osaka | Osaka University Nakanoshima Center (Osaka) | Simulation and Measurement results of BER Performance and Spectrum Distortion under High-order Modulation with the X-band GaN SSPA Mitsuhiro Nakadai (JAXA), Masahiro Funabashi, Toshihumi Inome (NEC Space) SAT2015-39 |
Japan Aerospace Exploration Agency (JAXA) has developed a 20W class X-band Solid State Power Amplifier (SSPA) using gall... [more] | SAT2015-39 pp.123-127 |
| SANE | 2015-06-18 17:10 |
Ibaraki | Tsukuba Space Center, JAXA (Ibaraki) | Development and Demonstration of the High-Precision Beam Steering Controller for Microwave Power Transmission, which takes account of applying to SSPS(Space Solar Power Systems) Katsumi Makino, Daisuke Joudoi, Mitsuhiro Nakadai, Masanobu Yajima, Kazuo Ohashi (JAXA), Tomohiro Takahashi, Takuro Sasaki, Yukihiro Homma (MELCO) SANE2015-22 |
(To be available after the conference date) [more] | SANE2015-22 pp.37-42 |
| SANE | 2014-06-20 14:45 |
Ibaraki | Tsukuba Space Center, JAXA (Ibaraki) | Development of 20W class X-band Amplifier using GaN
-- The Feasibility Study by the System Evaluation -- Mitsuhiro Nakadai, Johta Awano, Masanobu Yajima (JAXA), Masahiro Funabashi, Tomo Sakata (NTSpace) SANE2014-36 |
Japan Aerospace Exploration Agency (JAXA) has developed a 20W class X-band Solid State Power Amplifier (SSPA) using gall... [more] | SANE2014-36 pp.75-78 |
| SANE | 2013-12-02 16:30 |
Overseas | VAST/VNSC(2nd Dec.) & Melia Hotel (3rd Dec), Hanoi, Vietnam (Overseas) | Development of a 20W class X-band Amplifier using GaN HEMT Technology for Space Use Mitsuhiro Nakadai, Johta Awano, Masaaki Shimada (JAXA), Masahiro Funabashi (NTSpace) SANE2013-92 |
Japan Aerospace Exploration Agency (JAXA) has developed a 20W class X-band Solid State Power Amplifier (SSPA) using gall... [more] | SANE2013-92 pp.121-126 |
| SANE | 2013-04-25 13:50 |
Nagano | Usuda Deep Space Center, JAXA (Nagano) | Developement of highly efficient S-band GaN/SSPA for space use Johta Awano, Mitsuhiro Nakadai, Masaaki Shimada (JAXA), Takeshi Kawabata, Kougo Nakade, Megumi Nakayama, Akira Tsuchiko (MELOS) SANE2013-3 |
[more] | SANE2013-3 pp.13-16 |
| SANE | 2012-04-27 09:40 |
Nagano | Usuda Deep Space Center, JAXA (Nagano) | Suggestion for Selection Methods of Pre-distortion with Low Consumption Power Amplifier for High-Speed Communication on Small Satellites Mitsuhiro Nakadai, Naohiko Iwakiri (Tokyo Univ.), Hirobumi Saito (JAXA) SANE2012-6 |
Multi-level modulation is useful for Efficient use of frequency band to achieve the high-speed communications on small s... [more] | SANE2012-6 pp.29-34 |
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