Results 71 to 80 of about 1,468 (180)

Aerosol‐Cloud Interactions: Overcoming a Barrier to Projecting Near‐Term Climate Evolution and Risk

open access: yesAGU Advances, Volume 7, Issue 1, February 2026.
Abstract Aerosol‐cloud interactions (ACI) are a major source of uncertainty in climate science, critically affecting our ability to project near‐term climate evolution and assess societal risks. These interactions influence effective radiative forcing, cloud dynamics, and precipitation patterns, yet remain insufficiently constrained due to limitations ...
Ulas Im   +40 more
wiley   +1 more source

Real Heights of SuperDARN F Region Echoes Inferred From Electron Density Measurements by the Rankin Inlet and RISR‐C Radars

open access: yesRadio Science, Volume 61, Issue 2, February 2026.
Abstract This study is one of the first attempts to estimate statistically the real height of SuperDARN F region echoes in the polar cap. To achieve this, measurements of the electron density in the scattering volume of the Rankin Inlet SuperDARN radar are compared with the electron density profiles measured by the incoherent scatter radar RISR‐C ...
Alexander V. Koustov   +3 more
wiley   +1 more source

A Combined Multiple Reassignment Squeezing and Ergodic Hough Transform Method for Hovering Rotorcraft Detection from Radar Micro-Doppler Signals

open access: yesRemote Sensing
The rapid increase in production of small unmanned rotorcrafts (SURs) has made real-time drone surveillance critical for airspace security. Effective SUR detection is essential for maintaining aviation safety, protecting privacy, and ensuring public ...
Yingwei Tian   +3 more
doaj   +1 more source

Analysis of phase noise influence on micro-Doppler feature extraction of vibrating target

open access: yesThe Journal of Engineering, 2019
It is generally considered that increasing the carrier frequency of radar is an important way to improve the precision of micro-motion measurement. However, the increase of the radar frequency may raise the phase noise intensity of the radar transmitting
Zihao Liu, Bo Peng, Xiang Li
doaj   +1 more source

Micro Doppler Reconstruction From Discontinuous Observations Based on Gapped SBL-FBTVAR Method for Spin Stabilized Object

open access: yesIEEE Access, 2019
Micro Doppler analysis of spin stabilized objects is of a great significance for attitude estimation and recognition of space targets. In practice, the radar cannot dwell on one target in a long interval continuously.
Ling Hong, Fengzhou Dai, Xili Wang
doaj   +1 more source

Research on micro-Doppler feature of spatial target

open access: yesEURASIP Journal on Wireless Communications and Networking, 2017
The micro-Doppler (m-D) effect which is also called micro-motion effect is a kind of physical phenomenon, which is often produced in ISAR imaging of space targets. When the space target has a micro-Doppler effect, it will produce frequency modulation for
Zhenyuan Ji   +3 more
doaj   +1 more source

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