Results 61 to 70 of about 64,462 (213)

Assessment of SWOT for Monitoring Ice‐Marginal Lake Water Levels in Greenland

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract The Surface Water and Ocean Topography (SWOT) satellite mission provides a powerful data set for monitoring global surface water resources. However, its performance for monitoring ice‐marginal lakes in Greenland remains unknown. Due to the scarcity of in situ measurements, this study evaluated the reliability of ice‐marginal lake elevations ...
Xiaoyi Shen, Yubin Fan, Stephen J. Livingstone, Chang‐Qing Ke   +3 more
wiley   +1 more source

Intelligent ECCM technology via cognition and agility for the airborne radar

The Journal of Engineering, 2019
The electronic counter countermeasures (ECCM) technology is crucial to the modern airborne radar. In this study, opposed to the intelligent electronic countermeasure system, an intelligent anti-jamming technology is developed, which adjusts the working ...
Luo Meifang, Hao Zhimei, Zhu Yimin
doaj   +1 more source

Airborne Visible/Infrared Imaging spectrometer AVIS: Design, characterization and calibration [PDF]

, 2007
The Airborne Visible/Infrared imaging Spectrometer AVIS is a hyperspectral imager designed for environmental monitoring purposes. The sensor, which was constructed entirely from commercially available components, has been successfully deployed during ...
Bach, Begiebing, Berk, Boehrer, Chen, Davis, Gao, Goetz, Holst, Mtimet, Natascha Oppelt, Nishihama, Oppelt, Oppelt, Renecz, Schaepman, Scheiber, Schlaepfer, Schmidtlein, Schmidtlein, Schmidtlein, Wolfe, Wolfram Mauser   +22 more
core   +3 more sources

Radar Specularity Content Indicates a Strong Geothermal Heat Flow Gradient in Antarctica's South Pole Basin

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Accurate estimates of geothermal heat flow (GHF) are critical for predicting basal melting and identifying stable sites for ancient ice, yet GHF remains one of the least constrained boundary conditions for the Antarctic Ice Sheet. We evaluate nine published Antarctic GHF models against radar‐derived specularity content in the South Pole Basin (
M. Kerr, D. A. Young, S. Yan, C. Pierce
wiley   +1 more source

Radar target for remotely sensing hydrological phenomena [PDF]

, 1980
An apparatus for remotely measuring and accessing water status relative to snow and glacial melt, surface runoff, rainfall, evaporation, flow rate, and soil moisture is described.
Sivertson, W. E., Jr.
core   +1 more source

Characterization and Localization of Chemical Explosions and Lightning Flashes by a Flotilla of Stratospheric Balloons

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract On 3 August 2021, a flotilla of four Heliotrope solar hot air balloons was launched from central New Mexico (USA). The balloons, equipped with microbarometers, flew from sunrise to sunset at altitudes between 17 and 22 km. During the flight, eight chemical explosions ranging from 45 to 136 kg TNT equivalent and a thunderstorm occurred in the ...
T. Farges, G. Burgos, S. Albert, D. Bowman, O. Gainville, A. Le Pichon   +5 more
wiley   +1 more source

Anti-Jamming Imaging Method for Carrier-Free Ultra-Wideband Airborne SAR Based on Variational Modal Decomposition

Remote Sensing
This paper investigates the airborne synthetic aperture radar via outfield experiments based on carrier-free ultra-wideband signals with fifth-order Gaussian pulses with imaging using the backward projection algorithm. Typical blanket jamming is selected
Yue Yuan, Chengjin Zhan, Wuqi Tian, Si Chen, Shuning Zhang   +4 more
doaj   +1 more source

Low-resolution Airborne Radar Aircraft Target Classification

Leida xuebao, 2014
Target classification is particularly important in modern and future airborne radar. Nowadays, most investigations of radar target classification are based on wideband radar signals, which have higher requirements for SNR and radar systems, and are ...
Wang Fu-you, Luo Ding, Liu Hong-wei
doaj   +1 more source

Drilling Within the Critical Zone

Hydrological Processes, Volume 40, Issue 3, March 2026.
This review synthesises 30 years of critical zone drilling methodologies for studying subsurface weathering, water storage, and biogeochemical processes. We evaluate drilling techniques, sampling strategies, downhole logging, and long‐term monitoring approaches while addressing contamination control and core preservation challenges.
Amanda Donaldson, Russell P. Callahan, W. Jesse Hahm, David N. Dralle, Anders Noren, Rachel E. Breunig, Berit M. Hudson Rasmussen, Laura V. Krone, Susan L. Brantley, A. Joshua West, Lin Ma, Clifford S. Riebe, Margaret Zimmer, Ashlee Dere, Daniella Rempe   +14 more
wiley   +1 more source

Detecting Snow Avalanche Activity Using Infrasound: Hooker Valley, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Snow avalanches pose considerable hazards to people and infrastructure in alpine environments. Traditional avalanche monitoring relies on meteorological data and visual observations, which can be limited in scope and timeliness. Infrasound offers a promising complementary monitoring tool by detecting the low‐frequency sound waves generated by ...
L. W. Watson, A. Miller, J. F. Anderson, L. Toney, A. Ardid   +4 more
wiley   +1 more source