Fine Scale 3D Wind Field Observation With a Multistatic Equatorial Atmosphere Radar(<Special Issue>CPEA-Coupling Processes in the Equatorial Atmosphere)
スポンサーリンク
概要
- 論文の詳細を見る
Radar observation is widely recognized as an essential technique to study the three-dimensional dynamics of the atmosphere with a high temporal resolution. Conventional monostatic radar with a single aperture or array, however, has rather limited spatial resolution. This is because this radar can only obtain the radial component of the wind velocity, and thus it must observe at least three spatially separate target volumes to estimate the three components of the wind vector. In this paper, a multistatic radar observation technique, which uses two receiver arrays together with a high-gain rapid scanning mesosphere-stratosphere-troposphere (MST) radar, is presented. Multistatic receiver arrays obtain nonradial components of the wind velocity; hence, the technique enables us to determine 3D wind velocity at each minimum resolution volume. Consequently, it eliminates estimation error caused by horizontal inhomogeneity of the wind field and improves spatial resolution. Applying this technique, we made a series of tropospheric observations in September 2004, utilizing a newly developed digital receiver system at the Equatorial Atmosphere Radar, West Sumatra, Indonesia. Each receiver antenna is equipped with this digital receiver and recording system, which is constructed with a cost-effective ready-made digital receiver PCI board and a PC. This structure enables us to swing the receiving beam after an observation using digital beamforming techniques. First, the importance and the effectiveness of ground clutter rejection using an adaptive spatial filter, which is another advantage of digital receiver systems, is demonstrated. Then for the first time an example profile of a 3D wind velocity field with 1-km horizontal resolution at 3.8km altitude is presented. Considering the accuracy of the multistatic radar system, the resulting wind field shows the existence of significant perturbation that previously would have been averaged in conventional monostatic radar observations.
- 社団法人日本気象学会の論文
- 2006-07-14
著者
-
SATO Toru
Graduate School of Infomatics, Kyoto University
-
NISHIMURA Koji
Graduate School of Informatics, Kyoto University
-
GOTOH Eikoh
Graduate School of Informatics, Kyoto University
-
Gotoh Eikoh
Graduate School Of Informatics Kyoto University
関連論文
- Experimental Study of Robust and High-Resolution Ultrasound Imaging Algorithm with Adaptive Smoothing Techniques(WSANE 2008 (Workshop for Space, Aeronautical and Navigational Electronics))
- Effects of Tropical Rainfall to the Ku-Band Satellite Communications Links at the Equatorial Atmosphere Radar Observatory(CPEA-Coupling Processes in the Equatorial Atmosphere)
- Direct α-Hydroxylation of Ketones Catalyzed by Organic-Inorganic Hybrid Polymer
- Calculus detection for ultrasonography using decorrelation of forward scattered wave
- Fine Scale 3D Wind Field Observation With a Multistatic Equatorial Atmosphere Radar(CPEA-Coupling Processes in the Equatorial Atmosphere)
- Development of a multistatic atmospheric radar with digital receiver array(WSANE2006)
- BS-6-3 Development of a Multistatic Atmospheric Radar with Digital Receiver Arrays(BS-6.Observation, communication and positioning technology of equipments mounted on satellite, aircraft, ship and ground,ENGLISH SESSION)
- An experimental study of ultrasonic imaging with a reduced number of array elements using the envelope method
- Small calcification depiction in ultrasound B-mode images using decorrelation of echoes caused by forward scattered waves
- 3-D Fast Imaging Method for UWB Radar in Interference-Rich Environments with Global Optimization(WSANE 2008 (Workshop for Space, Aeronautical and Navigational Electronics))
- A Design Scheme for Electromagnetic Shielding Clothes via Numerical Computation and Time Domain Measurements(Analytical and Simulation Methods for Electromagnetic Wave Problems)
- Small calcification indicator in ultrasonography using correlation of echoes with a modified Wiener filter
- Ultrasound phantom using thin wires for the depiction of calcification: comparison of cross-sections of wire targets and mass targets (特集 医療・ヘルスケアにおける工学技術の新展開)
- High Resolution Ultrasound Imaging Using Frequency Domain Interferometry : Suppression of Interference Using Adaptive Frequency Averaging (特集 医療関連電子技術のニュートピック)
- High Resolution Ultrasound Imaging Using Frequency Domain Interferometry : Suppression of Interference Using Adaptive Frequency Averaging
- Aberration Correction with Low-Frequency Transmission for Medical Acoustic Imaging
- Improved Spatial Resolution in a Three-Dimensional Acoustic Medical Imaging System Based on a Hybrid Method Using a Synthetic Aperture Technique
- Experimental Study of High-Range-Resolution Medical Acoustic Imaging for Multiple Target Detection by Frequency Domain Interferometry