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Space Surveillance with High-Frequency Radar [PDF]

open access: yesSensors
High-Frequency (HF) radar is well suited to the surveillance of low-earth-orbit space. For large targets, a small deployable HF radar is able to match the detection performance of much larger space surveillance radar systems operating at higher ...
Brendan Hennessy   +8 more
doaj   +5 more sources

The Global High Frequency Radar Network [PDF]

open access: yesFrontiers in Marine Science, 2019
Academic, government, and private organizations from around the globe have established High Frequency radar (hereinafter, HFR) networks at regional or national levels.
Hugh Roarty   +31 more
doaj   +8 more sources

Tsunami Arrival Detection with High Frequency (HF) Radar [PDF]

open access: yesRemote Sensing, 2012
Quantitative real-time observations of a tsunami have been limited to deep-water, pressure-sensor observations of changes in the sea surface elevation and observations of sea level fluctuations at the coast, which are essentially point measurements ...
Donald Barrick   +3 more
doaj   +2 more sources

Susceptibility of Commercial-Off-The-Shelf Sensors to IEMI using Pulse Modulated Signals [PDF]

open access: yesAdvances in Radio Science, 2023
The use of sensors has grown dramatically in recent years and many devices rely on the information they provide. The lack of proper security mechanisms available to control the use of sensors and the high degree of integration make them more vulnerable ...
L. Cesbron Lavau   +3 more
doaj   +1 more source

High gain frequency scanning antenna using dumbbell‐shaped inclined slots and parallel plate waveguide polariser

open access: yesIET Microwaves, Antennas & Propagation, 2022
A high gain vertically polarised travelling‐wave frequency scanning array antenna fed by a meander rectangular waveguide is presented for Ku‐band operation.
Taher Badawy   +3 more
doaj   +1 more source

Applications of high‐frequency radar [PDF]

open access: yesRadio Science, 1998
Efforts to extend radar range by an order of magnitude with use of the ionosphere as a virtual mirror started after the end of World War II. A number of HF radar programs were pursued, with long‐range nuclear burst and missile launch detection demonstrated by 1956.
J. M. Headrick, J. F. Thomason
openaire   +1 more source

Effects of Movement for High Time-Bandwidths in Batched Pulse Compression Range-Doppler Radar

open access: yesSensors, 2021
Radar detection and track building performance is an essential part of a radar system. A high realized coherent integration gain often contributes to an improved performance.
Dominik Bok   +2 more
doaj   +1 more source

Comparison of DVB-T Passive Radar Simulated and Measured Bistatic RCS Values for a Pilatus PC-12 Aircraft

open access: yesSensors, 2022
Passive radar is a technology that has huge potential for airspace monitoring, taking advantage of existing transmissions. However, to predict whether particular targets can be measured in a particular scenario, it is necessary to be able to model the ...
Peter J. Speirs   +8 more
doaj   +1 more source

Coastal high-frequency radars in the Mediterranean

open access: yes, 2022
Due to the semi-enclosed nature of the Mediterranean Sea, natural disasters and anthropogenic activities impose stronger pressures on its coastal ecosystems than in any other sea of the world. With the aim of responding adequately to science priorities and societal challenges, littoral waters must be effectively monitored with high-frequency radar (HFR)
Lorente, Pablo   +10 more
  +6 more sources

MOBILE MAPPING BY FMCW SYNTHETIC APERTURE RADAR OPERATING AT 300 GHZ [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
While optical cameras or laser systems are widely used for mobile mapping low attention was payed for radar systems. Due to new semiconductor technologies, compact and leight weight SAR systems based on the Frequency Modulated Continuous Wave (FMCW ...
S. Palm   +5 more
doaj   +1 more source

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