Results 51 to 60 of about 4,480 (213)

First Coincident Radar and Optical Observations of a Meteor Radio Afterglow

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract It has been hypothesized that Meteor Radio Afterglows (MRAs) occur due to resonant transition radiation (RTR) where suprathermal electrons emit as they pass through electron density inhomogeneities in a turbulent plasma. Meteor trails are thought to produce suprathermal electrons through anion oxidation, which can be identified through meteor ...
K. S. Obenberger, J. L. Chau, J. Vierinen, D. Vida, L. E. Cordonnier, Z. Balint, M. Clahsen, E. Dao, J. Dowell, J. M. Holmes, R. F. Kelly, D. Kastinen, N. Pfeffer, K. Robinson, G. B. Taylor, J. M. Urco   +15 more
wiley   +1 more source

Combined intensity and coherent change detection with four classes for laboratory multistatic polarimetric synthetic aperture radar

IET Radar, Sonar & Navigation
Satellites and drone swarms can be used to collect multistatic Synthetic Aperture Radar (SAR) images. Synthetic Aperture Radar images can be used for Intelligence Surveillance and Reconnaissance.
Alexander Hagelberg, Daniel Andre, Mark Finnis   +2 more
doaj   +1 more source

Animal lameness detection with radar sensing [PDF]

, 2018
Lameness is a significant problem for performance horses and farmed animals, with severe impact on animal welfare and treatment costs. Lameness is commonly diagnosed through subjective scoring methods performed by trained veterinary clinicians, but ...
Busin, Valentina, Fioranelli, Francesco, Jonsson, Nicholas, King, George, Le Kernec, Julien, Loukas, Charalampos, Shrestha, Aman, Tomlinson, Martin, Viora, Lorenzo, Voute, Lance   +9 more
core   +1 more source

Frequency Selective Rasorber With Low Insertion Loss and Ultra‐Broadband Scattering Reduction

Advanced Physics Research, Volume 5, Issue 2, February 2026.
We present a dual‐polarization broadband frequency selective rasorber featuring a transmission window in the middle of its absorption band. The proposed FSR achieves a –10 dB reflection band over 3.68–16.94 GHz with a fractional bandwidth of 128.6%, featuring a minimum insertion loss of 0.3 dB at 10.3 GHz.
Ziming Yu, Chong He, Liping Liu, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Dynamic Multistatic Synthetic Aperture Radar Imaging: Resolving Motion via Differential Semblance and k‐Space Diversity

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
Moving targets often appear defocused and displaced in SAR imagery, complicating detection and recognition—especially when displaced into cluttered regions, where signal‐to‐background ratio is reduced. This work presents a multistatic SAR framework that extracts moving target signatures and reconstructs focused images, providing new insights into the ...
Francis Watson, Joshua Hellier, Daniel Andre   +2 more
wiley   +1 more source

Multistatic Cloud Radar Systems: Joint Sensing and Communication Design

, 2016
In a multistatic cloud radar system, receive sensors measure signals sent by a transmit element and reflected from a target and possibly clutter, in the presence of interference and noise.
Haimovich, Alexander, Jeong, Seongah, Kang, Joonhyuk, Khalili, Shahrouz, Simeone, Osvaldo   +4 more
core   +1 more source

Range‐Free Localisation for Monostatic Passive Radar Employing Multi‐Narrowband Illuminators

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
Range‐free localisation is considered for monostatic passive radar with multiple narrowband illuminators under unreliable time‐delay (range) measurements. Doppler/DOA (and optional Doppler‐rate) are fused in an ML framework, where velocity is iteratively updated to reduce the original 6‐D optimisation to a 3‐D position search.
Chenggeng Zhao, Chuanbin Zang, Lianpeng Li, Heyue Huang, Xingpeng Mao   +4 more
wiley   +1 more source

Investigating SAR algorithm for spaceborne interferometric oil spill detection [PDF]

, 2016
The environmental damages and recovery of terrestrial ecosystems from oil spills can last decades. Oil spills have been responsible for loss of aquamarine lives, organisms, trees, vegetation, birds and wildlife. Although there are several methods through
Ceriotti, Matteo, Lawal, Abdul Duane, Makarfi, Abubakar Umar, Radice, Gianmarco   +3 more
core  

Low Complexity Algorithm for Range-Point Migration-Based Human Body Imaging for Multistatic UWB Radars [PDF]

, 2019
High-resolution, short-range sensors that can be applied in optically challenging environments (e.g., in the presence of clouds, fog, and/or dark smog) are in high demand for various applications.
Shouhei Kidera, Yoshiki Akiyama
core   +2 more sources

Characterisation and Classification of Resident Space Objects Using Radar Networks

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper describes a simulated environment for generating Inverse Synthetic Aperture Radar (ISAR) images and interferometric point clouds using a three‐receiver radar configuration, along with the creation of extensive datasets to train and evaluate deep learning models under varying Signal‐to‐Noise Ratio (SNR) conditions. Findings show that modified
Manjunath Thindlu Rudrappa, Marcus Albrecht, Peter Knott   +2 more
wiley   +1 more source