Results 131 to 140 of about 8,136,705 (229)

Oil Slick Detection in X-Band Marine Radar Imagery: Leveraging a Boundary-Aware SBR Feature and an Improved Whale Optimization Algorithm

Journal of Marine Science and Engineering
Marine oil spills pose a persistent threat to marine ecosystems and coastal economies, and their rapid and unpredictable spread requires timely and reliable monitoring. In X-band marine radar images, oil slicks usually appear as low-contrast dark targets
Jianxun Rui, Jin Xu, Jianbin Yuan, Zekun Guo, Shuo Zhang, Yiteng Zhang, Qiuyu Fu, Boxi Yao, Yulong Yang, Wenhui Li   +9 more
doaj   +1 more source

Probable Maximum Precipitation: The Smethport Challenge

Water Resources Research, Volume 62, Issue 10, October 2026.
Abstract The 18 July 1942 Smethport, Pennsylvania storm produced US and world record rainfall accumulations of 165 mm in 10 min, 240 mm in 25 min and 780 mm in 270 min. Observations from the Smethport storm control sub‐daily Probable Maximum Precipitation (PMP) estimates over a large region of the eastern US.
James A. Smith, Mary Lynn Baeck, John F. England Jr., Long Yang, Russ S. Schumacher, Kelly Mahoney   +5 more
wiley   +1 more source

A Ka/X-band digital beamforming synthetic aperture radar for earth observation

, 2015
A Ka/X-band digital beamforming (DBF) spaceborne Synthetic Aperture Radar (SAR) is presented in this paper. To overcome the performance limitations of current SAR systems while reducing the cost, size, mass and power consumption, it employs a multi ...
E. Arnieri, Mao, Chunxu, C. Mao, Penkala, Piotr, M. Krstic, Younis, M., Carolina Tienda, Boccia, Luigi, G. Amendola, Qin, Fan, Koczor, A, Gao, Steven, Debski, Wojciech, Arnieri, Emilio, L. Boccia, Krstic, Milos, Celton, Elisabeth, W. Debski, A. Patyuchenko, Glisic, Srdjan, E. Celton, Patyuchenko, A., S. Gao, Boccia, L., Krieger, Gerhard, Amendola, Giandomenico, Debski, W., Patyuchenko, Anton, P. Penkala, F. Qin, A. Koczor, S. Glisic, Younis, Marwan, G. Krieger, M. Younis, Tienda, Carolina, Krieger, G., Mao, F, Glisic, W, Qin, F, Tienda, C, Mao, C., Krstic, M., Amendola, G., Glisic, S., Arnieri, E., Koczor, A., Celton, E., Gao, S., Qin, F., Penkala, P.   +50 more
core   +1 more source

Moist Available Potential Energy, Multiscale Energetics and the Multiscale Dynamics Governing an Extremely Devastating Rainstorm

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract An unprecedented record‐breaking extreme hourly rainfall event (201.9 mm/hr) occurred on 20 July 2021, at the Zhengzhou Station, China. In previous studies, a meso‐γ $\gamma $‐scale convective storm is found to be the direct process causing the rainfall; also found is the impact of processes on other scales (synoptic‐ and meso‐scales), in ...
Jiwang Ma, Yineng Rong, X. San Liang, Renhe Zhang, Xu Tang   +4 more
wiley   +1 more source

X-band radar system to support coastal management decisions [PDF]

, 2017
The difficulties and costs associated with the acquisition of hydrodynamic and bathymetry data in the nearshore is widely recognised. While technological advances have enabled in situ measurements at increased precision, the limited spatial and temporal ...
Williams, J.J., Esteves, L.S., Atkinson, J.   +2 more
core  

Marine Radar Image Sequence Target Detection Based on Space–Time Adaptive Filtering and Hough Transform

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The performance of marine radar target detection is largely affected by the intricate and dynamic space–time variations of sea clutter signals, which cause substantial numbers of false and missed alarms. To improve the target detection performance
Baotian Wen, Zhizhong Lu, Yongfeng Mao, Bowen Zhou   +3 more
doaj   +1 more source

Adding value to the measurements of an X-band radar on Catalonian coast [PDF]

, 2012
Rainscanner@Barcelona is an experiment assessing the hydrological value of a small X-band radar in urban areas.Postprint (published ...
Berenguer Ferrer, Marc, Sempere Torres, Daniel   +1 more
core  

X-SAR, the X-Band Synthetic Aperture Radar on Board the Space Shuttle.

, 1992
X-SAR ist der deutsch-italienische Beitrag zum NASA/JPL Shuttle Radar Lab, eine Kombination von L-Band, C- und X-Band Synthetik Apertur Radar Geraeten zur Vorbereitung fuer das Erdbeobachtungssystem (EOS).
Werner, M.
core  

On the remote sensing of oceanic and atmospheric convection in the Greenland Sea by synthetic aperture radar

, 2004
In this paper we discuss characteristic properties of radar signatures of oceanic and atmospheric convection features in the Greenland Sea. If the water surface is clean (no surface films or ice coverage), oceanic and atmospheric features can become ...
Mitnik, Leonid, Wehde H, Rubino A, Wehde, Henning, Romeiser R, Romeiser, Roland, Kern, Stefan, Kern S, Ufermann S, Androssov, Ufermann, Susanne, Rubino, Angelo, Androssov, Alexei, Mitnik L   +13 more
core   +1 more source

Design and implementation of a X-band transmitter and frequency distribution unit for a synthetic aperture radar [PDF]

, 2004
Synthetic aperture radar (SAR) can provide high-resolution images of extensive areas of the earth's surface from a platform operating at long ranges, despite adverse weather conditions or darkness.
Coetzer, Darren Grant
core