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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 18 of 18  /   
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
SANE 2010-08-25
15:45
Niigata Niigata University The measurement and evaluation of Ku band system noise and interference noise for the Quasi-Zenith Satellite System (QZSS)
Isao Nakazawa, Jun Amagai, Yasuhiro Takahashi, Miho Fujieda, Ying Li, Shin'ichi Hama (NICT) SANE2010-66
The first Quasi-Zenith Satellite System(QZSS) is planned to be launched in this summer, i.e. FY 2010. The QZSS orbit fol... [more] SANE2010-66
pp.31-35
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
 Results 1 - 18 of 18  /   
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