Results 91 to 100 of about 9,489 (235)

Alaska‐Yukon Glacier Depths From a Decade of Airborne Radar Sounding

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract NASA's Operation IceBridge employed airborne radar sounders in Alaska and adjacent northwestern Canada between 2012 and 2021 to measure the thickness of the region's glaciers. Here we present the first comprehensive analysis of these data, analyzing ∼31,700 linear‐km of radar profile data to provide over 5,500 linear‐km of ice thickness and ...
B. S. Tober   +4 more
wiley   +1 more source

Detection of moving radar targets in clutter

open access: yesInformation and Control, 1958
The moving target indicator is investigated for threshold power and visibility in clutter. In search for improvements, electronic scanning of the antenna beam is proposed and a detector is considered combining more than two pulses at a time.
openaire   +1 more source

Space-Doppler processing for multichannel ISAR imaging of non-cooperative targets embedded in strong clutter

open access: yes, 2013
Non-cooperative moving targets appear defocussed in SAR images and the blurring effect due to the unknown motion leads to low detection capabilities.
Bacci, A.   +12 more
core   +1 more source

Self‐Supervised Radar Nowcasting of Typhoon Cloud Evolution

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Self‐supervised learning (SSL) provides an innovative paradigm for pretraining without involving any new data or labels. However, its potential has not yet been evaluated in the field of typhoon raincloud nowcasting. Therefore, we explore two different SSL approaches: autoencoder (AE) and masked autoencoder (MAE).
Hongyi Yao   +7 more
wiley   +1 more source

A Novel Adaptive Ground Clutter Removal Algorithm for High Range Resolution MMW Radar

open access: yes, 2008
In this paper we present a novel adaptive ground clutter removal algorithm for high range resolution MMW-radar application where the dielectric contrast between the air and the ground material is close to or even higher than that between the target and ...
Ma Y(马钺)   +8 more
core   +1 more source

Within‐Night Variation in Predictor Importance Highlights Dynamic Nature of Bird Migration

open access: yesEcology Letters, Volume 29, Issue 6, June 2026.
Bar chart summarising median percent of gain contributed by each predictor type (atmospheric, sampling and terrestrial) for each timestep after sunset for spring (left) and fall (right) bird migration seasons. Predictor types are denoted by different colours.
Miguel F. Jimenez   +2 more
wiley   +1 more source

Overview of Space-Time Adaptive Processing for Airborne Multiple-Input Multiple-Output Radar

open access: yesLeida xuebao, 2015
Multiple-Input Multiple-Output (MIMO) radar is an emerging radar system that is of great interest to military and academic organizations due to its advantages and extensive applications.
Wang Ting, Zhao Yong-jun, Hu Tao
doaj   +1 more source

A new interpretation of multifrequency/multipolarization radar signatures of the Gulf Stream front

open access: yes, 1999
Radar signatures which are observed on SIR-C/X-SAR multifrequency/multipolarization synthetic aperture radar images of the Gulf Stream off the U.S. east coast are compared with results of simulations with a numerical radar imaging model. Based on in situ
Susanne Ufermann   +5 more
core   +1 more source

Sea clutter power reduction in pulse forward scatter radar

open access: yes, 2018
A Forward Scatter Radar (FSR) system does not have range resolution so the clutter is collected from the whole surface illuminated by the antenna radar.
Porfido, M. B.   +10 more
core   +1 more source

A probabilistic hypothesis density filter for traffic flow estimation in the presence of clutter [PDF]

open access: yes, 2012
Prediction of traffic flow variables such as traffic volume, travel speed or travel time for a short time horizon is of paramount importance in traffic control.
Romain Billot   +9 more
core   +1 more source

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