Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
WPT, AP (Joint) |
2019-01-17 11:35 |
Aichi |
Toyota Automobile Museum |
[Invited Lecture]
Dynamic rainfall intensity and rain attenuation model in Ka band satellite communication Isao Nakazawa, Yoshiya Arakaki, Kenji Suzuki, Tomoshige Kan, KazuKazuyoshi Kawasaki, Morio Toyoshima, Takashi Takahashi (NICT) AP2018-155 |
National Institute of Information and Communications Technology is advancing research projects to realize ultrahigh-spee... [more] |
AP2018-155 pp.23-28 |
RCS, SAT (Joint) |
2017-08-18 13:25 |
Niigata |
Niigata Univ. |
Time delay analysis between rain attenuation and rainfall intensity for Ka band satellite communications Isao Nakazawa, Kazuyoshi Kawasaki, Tomoshige Kan, Toshio Asai, Morio Toyoshima, Takashi Takahashi (NICT) SAT2017-37 |
At National Institute of Information and Communications Technology (NICT), by utilizing the features of satellite commun... [more] |
SAT2017-37 pp.87-91 |
SANE |
2017-05-22 11:50 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Characteristic evaluation of S/N improvement by undesired component signal prossessing method in FMCW radar Isao Nakazawa (CBIL), Akio Iso (iSR) SANE2017-6 |
The FMCW radar has a simpler device configuration than the pulse radar or pulse compression radar. Moreover, it has a hi... [more] |
SANE2017-6 pp.29-33 |
CCS |
2015-11-10 11:25 |
Kyoto |
Inamori Foundation Memorial Building, Kyoto Univ. |
Performance evaluation of satellite communication system using almost periodic frequency arrangement Isao Nakazawa, Umeno Ken (Kyoto Univ) CCS2015-59 |
[more] |
CCS2015-59 pp.75-79 |
CCS |
2015-08-06 15:45 |
Hokkaido |
Dai-ichi Takimotokan (Noboribetsu, Hokkaido) |
Almost periodicity frequency arrangement and application to satellite communication system Isao Nakazawa, Ken Umeno (Kyoto University) CCS2015-33 |
In the satellite communication that aims at safety and safety ICT in the next generation, the demand of a super-multiacc... [more] |
CCS2015-33 pp.23-26 |
NLP, CCS |
2015-06-11 15:30 |
Tokyo |
Waseda Univerisity |
Applicability and characteristics to satellite communications with power constant chaotic spreading sequence Isao Nakazawa, Ken Umeno (Kyoto Univ.) NLP2015-51 CCS2015-13 |
On explosion of Telecommunications and the Big Data, super-multi access satellite sensor network and high-speed satellit... [more] |
NLP2015-51 CCS2015-13 pp.73-78 |
SAT |
2014-10-24 17:00 |
Overseas |
Hae-un-dae Grand Hotel, Busan, Korea |
The test results of signal processor section of the satellite communication facilities for optical communication environment Isao Nakazawa, Shinichi Yamamoto, Amane Miura, Morio Toyoshima (NICT) SAT2014-50 |
In the optical space communication between the satellite and the earth station, it is effective to select the earth stat... [more] |
SAT2014-50 pp.195-200 |
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 |
SANE |
2012-06-28 16:50 |
Ibaraki |
Tsukuba Space Center, JAXA |
Experimental Results of QZSS Time Management System Yasuhiro Takahashi, Shin'ichi Hama, Jun Amagai, Maho Nakamura, Miho Fujieda, Ryo Tabuchi, Tadahiro Gotoh, Hideki Narita, Thomas Hobiger, Masanori Aida, Isao Nakazawa (NICT), Motohisa Kishimoto (JAXA), Yukihiro Yahagi (NEC Engineering), Tamaki Takahashi, Satoshi Horiuchi (NEC) SANE2012-28 |
Quasi-Zenith Satellite System (QZSS) is developed as a satellite system of positioning in specified regions of Japan fro... [more] |
SANE2012-28 pp.43-48 |
SAT, SANE (Joint) |
2012-02-16 13:50 |
Mie |
|
Area evaluation of wideband transmission propagation for Quasi Zenith Isao Nakazawa, Kazuhiro Kimura, Yoshiyuki Fujino, Shin'ichi Hama (NICT) SANE2011-160 SAT2011-67 |
In Japan, mobile satellite communication systems are now in service on S-band frequency. Moreover, the Quasi Zenith Sat... [more] |
SANE2011-160 SAT2011-67 pp.1-6(SANE), pp.13-18(SAT) |
SANE |
2011-10-18 15:00 |
Overseas |
Udayana University, Bali, Indonesia |
Development of QZSS mobile station Hideki Narita, Jun Amagai, Masanori Aida, Yasuhiro Takahashi, Isao Nakazawa, Shin'ichi Hama (NICT) SANE2011-101 |
As we designed and constructed the QZSS mobile station, we will report its configuration and performance.
The QZSS mobi... [more] |
SANE2011-101 pp.207-209 |
AP, SAT (Joint) |
2011-07-14 14:25 |
Nagano |
Fac. Eng., Shinshu Univ. |
Wideband radio propagation analysis for Quasi Zenith Satellite Systems at high elevation angles Isao Nakazawa, Kazuhiro Kimura, Yoshiyuki Fujino, Shin'ichi Hama (NICT) SAT2011-10 |
In Japan, mobile satellite communication systems are now in service on S-band frequency. Moreover, the Quasi Zenith Sat... [more] |
SAT2011-10 pp.13-18 |
SANE |
2011-06-24 11:15 |
Ibaraki |
Tsukuba Space Center (JAXA) |
Experimental Plan and Initial Experimental Results of Time Management System for Quasi-zenith Satellite System Yasuhiro Takahashi, Jun Amagai, Shin'ichi Hama, Miho Fujieda, Maho Nakamura, Ryo Tabuchi, Tadahiro Gotoh, Masanori Aida, Isao Nakazawa, Thomas Hobiger (NICT), Hiroyuki Noda (JAXA), Toshiaki Iwata (AIST), Yukihiro Yahagi (NEC Engineering), Tamaki Takahashi, Satoshi Horiuchi (NEC) SANE2011-34 |
[more] |
SANE2011-34 pp.101-106 |
SAT, SANE (Joint) |
2010-02-26 09:00 |
Tokyo |
NICT-Honbu |
Development and Experimental Plan of Time Management System of Satellite Positioning System using QZSS Yasuhiro Takahashi, Jun Amagai, Miho Fujieda, Maho Nakamura, Masanori Aida, Isao Nakazawa, Li Tingyu, Shin'ichi Hama (NICT), Hiroyuki Noda, Motohisa Kishimoto (JAXA), Yukihiro Yahagi (NEC Engineering, Ltd.), Satoshi Horiuchi, Tamaki Takahashi (NEC Corp.) SANE2009-160 |
[more] |
SANE2009-160 pp.7-11 |
RCS, SAT (Joint) |
2007-12-21 10:35 |
Oita |
|
Propagation analysis and field measurements of circularly polarized wave on high elevation angle for mobile satellite communications Isao Nakazawa, Kazuhiro Kimura, Jun Amagai, Yoshiyuki Fujino, Hitoshi Ishida, Shin'ichi Hama (NICT) SAT2007-57 |
In the mobile satellite communications in the personal use environment, it is preferable to clarify a variety of propaga... [more] |
SAT2007-57 pp.7-12 |
SAT |
2006-10-19 17:30 |
Overseas |
KAL Hotel (Jeju-Do, Korea) |
Analysis of the Propagation Field Data on High Elevation Angle for 2GHz and 2.5GHz Bands Mobile Satellite Communications Isao Nakazawa (NTWL), Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT) |
The receiving revel of mobile satellite communication using the communication and broadcasting engineering test satellit... [more] |
|
AP, SAT (Joint) |
2006-07-07 10:20 |
Hiroshima |
Hiroshima Institute of Technology |
Propagation measurements and analysis on high elevation angle for 2GHz and 2.5GHz bands mobile satellite communications Isao Nakazawa (NTWL), Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT) SAT2006-15 |
In the measurement of received power of the mobile satellite communication systems by using COMETS(Communication and br... [more] |
SAT2006-15 pp.13-18 |
|