Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Jun-ichi Furumoto"'
Autor:
Hiroo Hayashi, Jun-Ichi Furumoto, Xinan Lin, Toshitaka Tsuda, Yoshinori Shoji, Yuichi Aoyama, Yasuhiro Murayama
Publikováno v:
Terrestrial, Atmospheric and Oceanic Sciences, Vol 20, Iss 1, p 051 (2009)
The GPS radio occultation (RO) soundings by the FORMOSAT-3/COSMIC (Taiwan¡¦s Formosa Satellite Misssion #3/Constellation Observing System for Meteorology, Ionosphere and Climate) satellites launched in mid-April 2006 are compared with high-resoluti
Externí odkaz:
https://doaj.org/article/0cfae920428440f4a8fce948ab707dde
Publikováno v:
Annales Geophysicae, Vol 32, Pp 899-909 (2014)
The pulsed, beamwidth-limited atmospheric radar suffers from a finite resolution volume, making it difficult to resolve the small-scale irregularity structure of refractive index (or clear-air turbulence) in the scattering region. Multi-receiver and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2ccf840c2c8256e65e7df338a286641
https://doi.org/10.5194/angeo-32-899-2014
https://doi.org/10.5194/angeo-32-899-2014
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 31:620-629
The lower atmospheric wind profiles are obtained by the postset beam steering (PBS) technique on middle and upper (MU) atmosphere radar data. The Capon beamformer is used to improve the beam synthesizing in the desired directions within the radar tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d88f9b9ab5d12a556e8a9c9d8654bac
https://doi.org/10.1175/jtech-d-13-00101.1
https://doi.org/10.1175/jtech-d-13-00101.1
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 31:47-61
Multifrequency range imaging (RIM) used with the atmospheric radars at ultra- and very high-frequency (VHF) bands is capable of retrieving the power distribution of the backscattered radar echoes in the range direction, with some inversion algorithms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1cefdbdc5a238b83051bce53cf3218ff
https://doi.org/10.1175/jtech-d-12-00236.1
https://doi.org/10.1175/jtech-d-12-00236.1
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 51:3853-3861
This paper mainly focuses on the advantages of subspace-based eigenvector (EV) spectral estimator to improve the power spectrum and the quality of calculations in spectrum parameter estimation. In general, the spectrum produced by most of subspace me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a2ab16474e4ff9234ba5399612fe36e
https://doi.org/10.1109/tgrs.2012.2227334
https://doi.org/10.1109/tgrs.2012.2227334
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 51:3056-3062
The middle and upper atmospheric (MU) radar at Shigaraki, Japan, is an excellent system to carry out observation using a spaced antenna (SA) technique. Over several years, numerous scientific studies were reported using SAs. In most of the studies, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2a8378fadcb0cfea826e3645fdf60f3
https://doi.org/10.1109/tgrs.2012.2214442
https://doi.org/10.1109/tgrs.2012.2214442
Autor:
Jenn-Shyong Chen, Jun-ichi Furumoto
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 30:245-259
The aspect angle, a measurement of the aspect sensitivity of atmospheric refractivity irregularities, was estimated with multiple-receiver coherent radar imaging (CRI) of very high frequency (VHF) atmospheric radar. Two CRI parameters retrieved by Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7d5f155ff5b817ef73116734a3cc09f
https://doi.org/10.1175/jtech-d-12-00007.1
https://doi.org/10.1175/jtech-d-12-00007.1
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 51:520-526
Software beam synthesis by postset beam steering (PBS) technique is used to derive the horizontal wind velocities from multireceiver phased-array radar data. In order to improve the efficiency of beam synthesis, the Capon beamforming method is used t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6daf1ec4d8712937d58195557c18a236
https://doi.org/10.1109/tgrs.2012.2200256
https://doi.org/10.1109/tgrs.2012.2200256
Autor:
Tomonori Shinoda, Toshitaka Tsuda, Seiji Nagai, Jun-ichi Furumoto, Yasuhiro Murayama, Shinsuke Satoh
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 73:1010-1019
The present study is devoted to developing a radio acoustic sounding system (RASS) for the 443 MHz wind profiling radar (443 MHz WPR) installed at the Ogimi Wind Profiler Facility of the National Institute of Information and Communications Technology
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38751bf7dc30e47bab600e3ddf34c88d
https://doi.org/10.1016/j.jastp.2010.08.013
https://doi.org/10.1016/j.jastp.2010.08.013
Autor:
Toshitaka Tsuda, Shinsuke Satoh, Seiji Nagai, Aya Mikami, Yasuhiro Murayama, Jun-ichi Furumoto, Takuya Kawabata
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 73:996-1009
We observed a meso-γ-scale convective system in July 2007 using a 443-MHz wind profiler radar (WPR) with a radio acoustic sounding system (RASS) at the NICT Ogimi observatory in Okinawa, Japan. We analyzed the virtual temperature, T v , the Brunt–
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60a818f4e8281be5c7908c66a34f4d3c
https://doi.org/10.1016/j.jastp.2010.07.010
https://doi.org/10.1016/j.jastp.2010.07.010