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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 20  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
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 [Poster Presentation] Performance Evaluation of QZS NBP Time Transfer System
Tadahiro Gotoh, Jun Amagai, Yasuhiro Takahashi, Shin'ichi Hama (NICT) SANE2011-100
We have developed a graphics processing unit (GPU)-based two-way time transfer modem for a quasi-zenith satellite (QZS) ... [more] SANE2011-100
pp.201-205
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
10:40
Ibaraki Tsukuba Space Center (JAXA) Test result on orbit of On-board Time Transfer Subsystem for Quasi-Zenith Satellite System
Tamaki Takahashi (NEC), Yukihiro Yahagi (NEC Engineering), Susumu Kumagai (NT Space), Jun Amagai, Miho Fujieda, Maho Nakamura, Yasuhiro Takahashi, Shin'ichi Hama (NICT) SANE2011-33
This paper includes the description of Time Transfer Subsystem(TTS) for Quasi-Zenith Satellite System(QZSS) and the test... [more] SANE2011-33
pp.95-99
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 2011-06-24
11:35
Ibaraki Tsukuba Space Center (JAXA) Precise time transfer between earth stations via QZS system
Tadahiro Gotoh, Jun Amagai, Yasuhiro Takahashi, Shin'ichi Hama (NICT) SANE2011-35
 [more] SANE2011-35
pp.107-110
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
SANE 2008-11-25
10:20
Overseas Ba-Da-Guan Hotel, Qingdao Some Eetimation on the error sources of the time comparison between a satellite and an earth station
Maho Nakamura, Shin'ichi Hama, Jun Amagai, Yasuhiro Takahashi, Fumimaru Nakagawa, Miho Fujieda, Tadahiro Gotoh, Masanori Aida (National Institute of Information and Communications Technology) SANE2008-70
National Institute of Information and Communications Technology (NICT) plans to construct time comparison system between... [more] SANE2008-70
pp.39-42
SANE 2008-06-26
11:35
Ibaraki Tsukuba Space Center (JAXA) Time Comparison and Ranging Experiments using Precise Time Comparison Equipment of ETS-VIII
Fumimaru Nakagawa, Yasuhiro Takahashi, Ryo Tabuchi, Hiroo Kunimori, Jun Amagai, Shigeru Tsuchiya, Shin'ichi Hama (NICT), Hiroyuki Noda (JAXA) SANE2008-16
ETS-VIII, a Japanese geo-stationary satellite launched in December 2006, has been developed to obtain the fundamental te... [more] SANE2008-16
pp.19-22
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
AP, SAT
(Joint)
2007-07-20
09:00
Hokkaido Daiichi-Takimotokan(Noboribetsu) Ku band, Non-GSO Satellite Communication Systems for Video Up-link from Land-Mobile Vehicle
Yoichi Kawakami, Seiya Inoue (MELCO), Masahiro Ichieda (MDT), Hiroyoshi Masuda (MELCO), Jun Amagai, Shin'ichi Hama (NICT) SAT2007-12
Considering the limits of the Radio Regulations, we perform a study of link budget for Ku-band, Non-GSO satellite commu... [more] SAT2007-12
pp.1-6
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
09:55
Hiroshima Hiroshima Institute of Technology Communication System Design in Time Management System for Satellite Positioning System using Quasi-Zenith Satellites
Yasuhiro Takahashi, Jun Amagai, Kazuhiro Kimura, Miho Fujieda, Shin'ichi Hama (NICT), Mikio Sawabe, Motohisa Kishimoto (JAXA), Kazuo Kondo, Toshihaya Nakahara, Satoshi Horiuchi (NTS) SAT2006-14
 [more] SAT2006-14
pp.7-12
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
AP, SAT
(Joint)
2006-05-18
14:20
Kagoshima Kagoshima Univ. Field Measurement of Radio Environment Using S-Band Thin Antennas for Automotive Mobile Satellite Communications
Kazuhiro Kimura, Shin'ichi Hama (NICT), Izuru Naito, Masahiro Ichieda, Seiya Inoue, Motoyoshi Terauchi (Mitsubishi Electric Corp.) SAT2006-3
Field measurement results of radio environment are reported for interference assessment at mobile terminals from existin... [more] SAT2006-3
pp.11-16
SAT 2005-10-13
13:40
Aichi Rubura Ohzan Quasi-Zenith Satellite System (QZSS) -- Outline and its time related mission --
Shin'ichi Hama, Yasuhiro Takahashi, Jun Amagai, Hiroyuki Ito, Takao Morikawa, Shouichirou Yokota, Miho Fujieda, Kazuhiro Kimura (NICT)
Japan has started a project of Quasi-Zenith Satellite System (QZSS)
since FY2003. QZSS will be highly useful not only... [more]
SAT2005-19
pp.13-17
AP, SAT
(Joint)
2005-05-20
09:55
Tottori Tottori Univ. of Environmental Studies S-band packet communication test system for Quasi-Zenith Satellite System
Kazuhiro Kimura, Hitoshi Ishida, Shin'ichi Hama (NICT), Nobuyuki Ishioka, Yasushi Kasugai (Hitachi), Haruo Akino (FDK), Nobutoshi Fukuden (AI Elec.), Hiroyuki Uematsu (Mitsubishi Elec.)
S-band mobile satellite packet communication service will be provided by the developing Japanese Quasi-Zenith satellite ... [more] SAT2005-2
pp.7-12
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