Zobrazeno 1 - 10
of 36
pro vyhledávání: '"N. Niamsuwan"'
Autor:
Bryan Stiles, Mark A. Boothe, Robert E. Holz, Tomislava Vukicevic, Quoc Vu, P. Peggy Li, Brian Knosp, Yi Chao, F. Joseph Turk, N. Niamsuwan, Frank D. Marks, Bjorn Lambrigtsen, Sundararaman Gopalakrishnan, Hui Su, Anthony J. Wimmers, Jeffrey S. Reid, Ziad S. Haddad, Deborah G. Vane, Andrés Navarro, R. Scott Dunbar, Ousmane O. Sy, Hua Leighton, Tsae-Pyng Shen, Vijay Tallapragada, Simone Tanelli, Eun-Kyoung Seo, William L. Poulsen, Philip S. Callahan, Saiprasanth Bhalachandran, Svetla M. Hristova-Veleva, Samuel Trahan, Michael T. Montgomery, Francisco J. Tapiador
Publikováno v:
Bulletin of the American Meteorological Society. 101:E1718-E1742
Tropical cyclones (TCs) are among the most destructive natural phenomena with huge societal and economic impact. They form and evolve as the result of complex multiscale processes and nonlinear interactions. Even today the understanding and modeling
Autor:
V. Chandrasekar, Michael P. Johnson, Andrew J. Heymsfield, Simone Tanelli, Manuel Vega, Kwo-Sen Kuo, Stephen L. Durden, Robert M. Beauchamp, N. Niamsuwan, Aaron Bansemer, Ousmane O. Sy
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 37:993-1012
This article illustrates how multifrequency radar observations can refine the mass–size parameterization of frozen hydrometeors in scattering models and improve the correlation between the radar observations and in situ measurements of microphysica
Autor:
N. Niamsuwan, Sermsak Jaruwatanadilok, Shaowu Huang, Leung Tsang, Hsuan Ren, Seung-Bum Kim, K.S. Chen, Tien-Hao Liao
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 54:651-662
We extend the 3-D numerical method of Maxwell's equation (NMM3D) for rough soil surface scattering from L-band to C-, X-, and Ku-bands. We illustrate the results for copolarization, cross-polarization, and polarization ratio (HH/VV). Copolarized and
Autor:
Alexander Wineteer, Ernesto Rodriguez, Ninoslav Majurec, Karthik Srinivasan, N. Niamsuwan, Tamás Gál, Dragana Perkovic-Martin, Raquel Monje, Bryan Stiles, Chad Baldi, Fabien Nicaise
Publikováno v:
Remote Sensing; Volume 12; Issue 6; Pages: 1021
Remote Sensing, Vol 12, Iss 6, p 1021 (2020)
Remote Sensing, Vol 12, Iss 6, p 1021 (2020)
Ocean surface winds and currents are tightly coupled, essential climate variables, synoptic measurements of which require a remote sensing approach. Global measurements of ocean vector winds have been provided by scatterometers for decades, but a syn
Autor:
Ernesto Rodriguez, Bryan Stiles, Alexander Wineteer, R. Rodriguez Monje, Dragana Perkovic-Martin, T. Gal, N. Niamsuwan
Publikováno v:
IGARSS
DopplerScatt is a Ka-band pencil-beam Doppler scatterometer developed under NASA's ESTO Instrument Incubator Program (IIP) to serve as a demonstrator for future spaceborne instruments to measure ocean surface currents and winds simultaneously. We rev
Autor:
N. Niamsuwan, Eric Liao, Chung-Lun Chuang, Vu Duong, Ken Vines, Barry Volain, S. Shaffer, C. Lim, Muh-Wang Yang, Samuel Li, K. Wheeler
Publikováno v:
2016 IEEE Radar Conference (RadarConf).
The NASA-ISRO Synthetic Aperture Radar (NISAR) L-band SAR instrument employs multiple digital channels to optimize resolution while keeping a large swath on a single pass. High-speed digitization with fine synchronization and digital beam forming are
Autor:
James Park, Ninoslav Majurec, Simon Yueh, Priscilla N. Mohammed, Christopher S. Ruf, Jeffrey R. Piepmeier, Sidharth Misra, Steven J. Dinardo, Joel T. Johnson, N. Niamsuwan
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 49:3359-3370
Statistics of radio frequency interference (RFI) observed in the band 1398-1422 MHz during an airborne campaign in the United States are reported for use in analysis and forecasting of L-band RFI for microwave radiometry. The observations were conduc
Publikováno v:
Waves in Random and Complex Media. 21:184-197
Measurements of radar pulse return waveforms are known to provide information on properties of the observed surface, and are commonly used in oceanographic altimetry. In such applications, the convolution model (also called the “Brown model”) is
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 45:3672-3679
Radio-frequency interference (RFI) is a major limiting factor in passive microwave remote sensing and radio astronomy. A digitally based radiometer system has been developed to improve RFI mitigation through the use of high temporal and spectral reso
Autor:
Albin J. Gasiewski, E. McIntyre, M. Klein, Baris Guner, R. Krishnamachari, V.Y. Leuski, Steven W. Ellingson, Joel T. Johnson, N. Niamsuwan, Grant Hampson
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 44:1974-1985
Corruption of C-band microwave brightness observations by radio-frequency interference (RFI) has been reported in recent data from orbiting radiometers; methods for mitigating these effects are of great importance for the design of future spaceborne