Results 51 to 60 of about 631 (180)

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

Two-dimensional wind field observation based on multistatic meteor radars in central and eastern China

地球与行星物理论评
All-sky meteor radars have become a reliable and widely used tool for observing horizontal winds in the mesosphere and lower thermosphere (MLT) region. This provides vital data support for the study of dynamics in this region.
Maolin Lu, Wen Yi, Jie Zeng, Xianghui Xue, Hailun Ye, Tingdi Chen   +5 more
doaj   +1 more source

Frequency Domain Image Reconstruction for Imaging With Multistatic Dynamic Metasurface Antennas

IEEE Access, 2022
Dynamic metasurface antennas (DMAs) have recently been introduced as a computational imaging (CI) platform that offers significant advantages over conventional imaging systems.
Vasiliki Skouroliakou, Amir Masoud Molaei, Maria Garcia-Fernandez, Guillermo Alvarez-Narciandi, Okan Yurduseven   +4 more
doaj   +1 more source

Multistatic acoustic characterization of seabed targets [PDF]

The Journal of the Acoustical Society of America, 2017
One application for autonomous underwater vehicles (AUVs) is detecting and classifying hazardous objects on the seabed. An acoustic approach to this problem has been studied in which an acoustic source insonifies seabed target while receiving AUVs with passive sensing payloads discriminate targets based on features of the three dimensional scattered ...
Fischell, Erin M., Schmidt, Henrik
openaire   +3 more sources

Traditional Techniques and Modern Microwave Antenna Designs for Breast Cancer Detection: A Comprehensive Review

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Microwave breast imaging has become a significant area of research due to the high incidence of breast cancer in women and the limitations of conventional detection methods. In recent years, this field has gained momentum as it offers improved detection rates and several advantages like it is nonionizing and safe, cost‐effective, portable and flexible,
Chinmoy Das, Mostafa Zaman Chowdhury, Liton Chandra Paul   +2 more
wiley   +1 more source

Accurate Phase Calibration of Multistatic Imaging System for Medical and Industrial Applications

Applied Sciences
Multistatic imaging systems are commonly used in radar systems and microwave imaging. In these systems, many antennas are arranged three-dimensionally and connected to RF switches.
Hiroshi Tabata, Makoto R. Asakawa, Soichiro Yamaguchi   +2 more
doaj   +1 more source

Performance Analysis for Joint Target Parameter Estimation in UMTS-Based Passive Multistatic Radar with Antenna Arrays Using Modified Cramér-Rao Lower Bounds

Sensors, 2017
In this study, the modified Cramér-Rao lower bounds (MCRLBs) on the joint estimation of target position and velocity is investigated for a universal mobile telecommunication system (UMTS)-based passive multistatic radar system with antenna arrays. First,
Chenguang Shi, Fei Wang, Sana Salous, Jianjiang Zhou   +3 more
doaj   +1 more source

Modeling Regional Electric Field Using EISCAT3D Observations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract EISCAT3D, which is in its final stage of construction, will be the next generation incoherent scatter radar (ISR) system to provide the full ion velocity vector across hundreds of kms in vertical and horizontal directions. This presents a tremendous opportunity to study the three‐dimensional nature of ionospheric electrodynamics.
Habtamu W. Tesfaw, Heikki Vanhamäki, Ilkka Virtanen, Spencer Hatch, Matt Zettergren, Karl Laundal   +5 more
wiley   +1 more source

Integrating Systems Methodologies for Australian Undersea Surveillance: A Systematic Literature Review

Systems Engineering, Volume 28, Issue 4, Page 471-497, July 2025.
ABSTRACT Australia is a maritime nation, relying on access to its surrounding oceans for its economy and security. The Royal Australian Navy conducts undersea surveillance to monitor this vital maritime environment and gain insight into activities beneath the ocean's surface.
Timothy J. Milledge, Biswajeet Pradhan, Nagesh Shukla   +2 more
wiley   +1 more source

Two‐Day Wave Modulation of Gravity Wave Momentum Fluxes Observed Over South America

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 8, 28 April 2025.
Abstract Planetary wave (PW) modulation of gravity wave (GW) dissipation has long been proposed as a source of longitudinal variability in the mesosphere and lower thermosphere. However, direct measurements of GW drag are rare. We identify 2‐day wave variations in GW momentum fluxes measured by the Southern Argentina Agile Meteor Radar (SAAMER) in Rio ...
Ruth S. Lieberman, Gunter Stober, Erich Becker, Diego Janches, Jun Ma, Alan Liu   +5 more
wiley   +1 more source