Results 61 to 70 of about 4,480 (213)

Multistatic Radar: System Requirements and Experimental Validation [PDF]

, 2015
Multistatic radar provides many advantages over conventional monostatic radar, such as enhanced information on target signatures and improvements in detection which are due to the multiple perspectives and differences in the properties of clutter ...
Fioranelli, F, Griffiths, H, Inggs, M, Ritchie, M, Woodbridge, K   +4 more
core  

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

Gait Analysis of Horses for Lameness Detection with Radar Sensors [PDF]

, 2017
This paper presents the preliminary investigation of the use of radar signatures to detect and assess lameness of horses and its severity. Radar sensors in this context can provide attractive contactless sensing capabilities, as a complementary or ...
Fioranelli, F., Le Kernec, J., Marshall, J.F., Shrestha, A., Voute, L.   +4 more
core   +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

Toolkit for incoherent scatter radar experiment design and applications to EISCAT_3D [PDF]

Annales Geophysicae
Modern phased-array incoherent scatter radar (ISR) systems consist of several thousand phased-array antenna elements. Next-generation phased-array ISR systems are shifting towards multistatic setups consisting of three sites, such as EISCAT_3D with sites
S. M. Hatch, I. Virtanen, K. M. Laundal, H. W. Tesfaw, J. Vierinen, D. R. Huyghebaert, A. Spicher, J. C. Hessen   +7 more
doaj   +1 more source

System Concepts for Bi- and Multi-Static SAR Missions [PDF]

, 2003
The performance and capabilities of bi- and multistatic spaceborne synthetic aperture radar (SAR) are analyzed. Such systems can be optimized for a broad range of applications like frequent monitoring, wide swath imaging, single-pass cross-track ...
Fiedler, Hauke, Hounam, David, Krieger, Gerhard, Moreira, Alberto, Rodriguez Cassola, Marc   +4 more
core  

Compressed sensing of monostatic and multistatic SAR [PDF]

, 2013
In this letter, we study the impact of compressed data collections from a synthetic aperture radar (SAR) sensor on the reconstruction quality of a scene of interest.
Cetin, Mujdat, Karl, W. Clem, Stojanovic, Ivana, Çetin, Müjdat   +3 more
core   +2 more sources

Causes of the Abnormally Strong Easterly Phase of the Mesopause Semiannual Oscillation During the March Equinox of 2023 Revealed by a New Reanalysis Data Covering the Entire Middle Atmosphere

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract During the March equinox of 2023, a strong easterly wind of ∼80 m s−1 appeared at an altitude of ∼82 km in the equatorial upper mesosphere, which is regarded as an enhancement of the mesopause semi‐annual oscillation. In this study, a new reanalysis data available up to 110 km was used to investigate its momentum budget.
Kaoru Sato, Dai Koshin, Jose Suclupe, Jorge L. Chau, Lourivaldo M. Lima, Guozhu Li, S. Vijaya Bhaskara Rao, M. Venkat Ratnam, Rodolfo Rodriguez, Danny Scipion   +9 more
wiley   +1 more source

Directional sensitivity of track initialisation of a multistatic Doppler‐only passive radar network

IET Radar, Sonar & Navigation, 2021
A multistatic passive radar network originally presented in Ptak et al. for long‐distance aircraft tracking is sensitive to track initialisation errors. When these errors exceed 50 km, target tracking often diverges.
Miika Tolonen, Tuomo Kauranne, Juha Hartikka, Mauno Ritola, Matti Korhonen   +4 more
doaj   +1 more source

Controlled Tracking in Urban Terrain: Closing the Loop

, 2018
We investigate the challenging problem of integrating detection, signal processing, target tracking, and adaptive waveform scheduling with lookahead in urban terrain.
Barbosa, Patricia R., Chong, Edwin K. P., Li, Yun, Moran, Bill, Sarkale, Yugandhar, Suvorova, Sofia   +5 more
core   +1 more source