Results 41 to 50 of about 631 (180)

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

Uncoupled Digital Radars Creating a Coherent Sensor Network

IEEE Journal of Microwaves
Radar networks offer the possibility to overcome the limitations of single sensors. However, without coherent signal processing, the full potential of radar networks cannot be exploited.
Julian Aguilar, David Werbunat, Vinzenz Janoudi, Christina Bonfert, Christian Waldschmidt   +4 more
doaj   +1 more source

Simulation framework for activity recognition and benchmarking in different radar geometries

IET Radar, Sonar & Navigation, 2021
Radar micro‐Doppler signatures have been proposed for human monitoring and activity classification for surveillance and outdoor security, as well as for ambient assisted living in healthcare‐related applications.
Boyu Zhou, Yier Lin, Julien Le Kernec, Shufan Yang, Francesco Fioranelli, Olivier Romain, Zhiqin Zhao   +6 more
doaj   +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

Multistatic and Multiple Frequency Imaging Resolution Analysis-Application to GPS-Based Multistatic Radar [PDF]

IEEE Transactions on Aerospace and Electronic Systems, 2012
This paper focuses on the computation of the generalized ambiguity function (GAF) of a multiple antennas multiple frequencies radar system (MAMF). This study provides some insights into the definition of resolution parameters of a MAMF radar system. It turns out that the range and azimuth resolutions are not the most suitable criteria to specify the ...
Daout, Franck, Schmitt, Françoise, Ginolhac, Guillaume, Fargette, Philippe   +3 more
openaire   +3 more sources

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

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

Time delay estimation issues for target detection and transmitter identification in multistatic radars

Engineering Reports, 2020
Time delay estimation (TDE) is an active research area due to its importance in a wide range of applications, such as target detection and transmitter identification.
Dillip Dash, Valarmathi Jayaraman
doaj   +1 more source

Time Reversal Detection in Multistatic Radar System

IEEE Access, 2020
A multistatic radar system can effectively improve the detection performance owing to its spatial diversity property. However, the detection performance will degrade when there exist multipaths.
Zhaoming Zhang, Baixiao Chen, Minglei Yang   +2 more
doaj   +1 more source

Collaborative transmit resource scheduling and waveform selection for target tracking in multistatic radar system

IET Radar, Sonar & Navigation, 2021
This paper proposes a collaborative transmit resource scheduling and waveform selection (CTRSWS) strategy for target tracking in multistatic radar system which consists of one transmitter and an arbitrary number of receivers.
Yijie Wang, Chenguang Shi, Fei Wang, Jianjiang Zhou   +3 more
doaj   +1 more source