Results 91 to 100 of about 65,405 (227)
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.Abstract We find observational evidence for mountain waves (MWs) and secondary gravity waves (2GWs) in the OH*(3‐1) layer above Tierra del Fuego, Argentina. On the night of 21–22 May 2018, the Advanced Mesospheric Temperature Mapper (AMTM) obtained temperatures at ∼84 ${\sim} 84$ km.
Robert Reichert +7 more
wiley +1 more source
Sensors, 2018 Different from microwave radar, laser radar could be more sensitive to the micro-Doppler (m-D) effect due to its wave length. This limits the application of conventional methods, such as time–frequency based approach, since the processing needs a ...
Mingzhe Zhu +4 more
doaj +1 more source
Distribution and size of elements of Saturn's rings as inferred from 12-cm radar observations [PDF]
A 64m radar antenna was used to observe Saturn's rings at 12.6 cm wavelength, with reduced Doppler spread. The results show a positive radar return corresponding to about a 60 percent return from an isotropic scatterer with the projected area of the ...
Morris, G. A., Jr.
core +1 more source
Monostatic and Bistatic Radar Measurements of Birds and Micro-drone [PDF]
, 2016 This paper analyses the experimental results from recent monostatic and bistatic radar measurements of multiple birds as well as a quadcopter micro-drone. The radar system deployed for these measurements was the UCL developed NetRAD system.
Fioranelli, Francesco +3 more
core +2 more sources
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.Abstract Fundamental questions remain about where and when convection will occur within African easterly waves. In this study, we aim to better understand the dynamical processes that govern moist convective organization at the meso‐alpha scale in tropical easterly waves using NASA airborne field campaigns and satellite observations.
D. Colón‐Burgos, M. M. Bell
wiley +1 more source
Plume‐Coupled Long‐Range Spotting Drove the Explosive Spread of the 2018 Camp Fire
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.Abstract Extreme fire spread during the 2018 Camp Fire in northern California was driven by organized long‐range spotting tightly coupled to plume dynamics. Doppler radar and satellite observations reveal distinct regions of ember lofting and downwind fallout within the convective column, forming direct pathways for firebrand transport several (up to ...
N. P. Lareau
wiley +1 more source
Discrete radar based on modulo arithmetic
EURASIP Journal on Advances in Signal ProcessingZak-OTFS is a modulation scheme where signals are formed in the delay–Doppler (DD) domain, converted to the time domain (DD) for transmission and reception, then returned to the DD domain for processing.
Nishant Mehrotra +4 more
doaj +1 more source
IEEE Access, 2016 We investigate the feasibility of estimating the total energy expenditure (TEE) of a human for walking/running activities with micro-Doppler signatures. Doppler radar can capture micro-Doppler signatures produced from limb motions when a human moves.
Youngwook Kim +2 more
doaj +1 more source
The Adelaide VHF radar: Capabilities and future plans [PDF]
The VHF radar at Buckland Park, South Australia commenced operation in January, 1984. The radar is located adjacent to the 2-MHz ionospheric radar. The routine method for measuring horizontal wind velocity is the space antenna technique (SA) while the ...
Briggs, B. H. +5 more
core +1 more source
Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.Abstract Vertical mass flux (MF) describes the rate at which air and water vapor move upward or downward in an atmospheric column. MF is related to cloud and precipitation formation. This work examines the relationship between MF and characteristics of tropical cyclones (TCs) in idealized Weather Research and Forecasting model simulations.
Alyssa M. Stansfield +1 more
wiley +1 more source