Results 101 to 110 of about 19,915 (242)
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
ERA5‐Based Convective Environments Favorable for Tornadoes in Southern China
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Tornado occurrences vary significantly across regions in the globe, attributable in part to variations in regional climate and topography. This study analyzes the long‐term convective environments associated with tornadoes in southern China, a region previously identified as having the most favorable meteorological conditions for tornadoes ...
Kanglong Cai +5 more
wiley +1 more source
The Effect of Sea Surface Slicks on the Doppler Spectrum Width of a Backscattered Microwave Signal
Sensors, 2008 The influence of a surface-active substance (SAS) film on the Doppler spectrum width at small incidence angles is theoretically investigated for the first time for microwave radars with narrow-beam and knife-beam antenna patterns.
Eugeny Meshkov +2 more
doaj
A Multi-Source Radar Data Complementary Enhancement Generation Method Based on Diffusion Model
Remote SensingMulti-source radar data fusion has become increasingly vital for advancing weather monitoring and forecasting. However, effectively integrating Doppler radar with an X-band phased-array radar remains challenging.
Yuan Peng +4 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Using lidar observations of 12 monthly composites of normalized Na density ratios, we have discovered an Ionosphere‐Thermosphere‐Mesosphere (ITM) Na transition layer from ∼120 to ∼95 km over Boulder, Colorado. The transition layer occurs regularly in all months with a distinct separation from the predawn TINa layer and exhibits coherent ...
Yingfei Chen, Xinzhao Chu
wiley +1 more source
The Turbulence Properties of 150‐km Echoes in the Lower Ionosphere
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract The valley region ionosphere spans from approximately 120–200 km in altitude, and hosts a wide range of plasma, neutral, and solar interactions that create and maintain the ionosphere. In this region a ubiquitous and mysterious source of radar echoes called “150‐km echoes” has been observed since the 1960s.
William J. Longley +3 more
wiley +1 more source
The Doppler Spectra of Medium Grazing Angle Sea Clutter; Part 1: Characterisation
, 2016 This paper is concerned with the characterisation of Doppler spectra from high range resolution X-band radar sea clutter observed from an airborne platform over the range of grazing angles, 15° to 45°.
Rosenberg, L +3 more
core
Improved detection and ambiguity resolution of multiple targets in MPRF Radar [PDF]
, 2009 This paper presents the results of an investigation into the mechanisms that generate ghost targets when many real targets are present on the same azimuth in a MPRF radar system.
Lewis, Michael B., Hughes, Evan J.
core
, 2009 This is an open access article - Copyright @ 2009 E. Schweizerbart'sche VerlagsbuchhandlungDuring the Convective and Orographically induced Precipitation Study (COPS), a scanning Doppler lidar was deployed at Achern, Baden-Wüttemberg, Germany from 13th ...
Fay Davies +11 more
core +1 more source
Multi‐LiDAR Observations of Coastal Atmospheric Duct Evolution in Hampton Roads
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 12, 28 June 2026.Abstract To better understand the influence of atmospheric ducts on radio frequency (RF) operations, continuous high‐resolution observations of temperature and water vapor are essential. Hampton University's (HU) 48‐inch Raman‐Mie LiDAR provides such measurements through rotational and vibrational Raman techniques, enabling detailed monitoring of ...
Jia Su +4 more
wiley +1 more source