Results 11 to 20 of about 95,952 (309)

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

Passive radar in the high frequency band

open access: yes2008 IEEE Radar Conference, 2008
Passive radar systems using emitters of opportunity for target detection and tracking have received significant interest recently, especially those which exploit frequency modulated (FM) radio stations and TV transmitters as signal sources. This paper is
Alfonso Farina   +5 more
core   +3 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

HIGH-FREQUENCY RADAR FOR COASTAL AREAS MONITORING

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2019
Introduction. The modern approach for ensuring marine activities of necessary quality related to the assessment of current information on the state of the ocean environment in Russia is clearly insufficient.
V. I. Veremyev   +4 more
doaj   +3 more sources

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

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

Fast, Efficient, and Viable Compressed Sensing, Low-Rank, and Robust Principle Component Analysis Algorithms for Radar Signal Processing

open access: yesRemote Sensing, 2023
Modern radar signal processing techniques make strong use of compressed sensing, affine rank minimization, and robust principle component analysis. The corresponding reconstruction algorithms should fulfill the following desired properties: complex ...
Reinhard Panhuber
doaj   +1 more source

Developments in target micro-doppler signatures analysis: radar imaging, ultrasound and through-the-wall radar [PDF]

open access: yes, 2013
Target motions, other than the main bulk translation of the target, induce Doppler modulations around the main Doppler shift that form what is commonly called a target micro-Doppler signature.
Soraghan, J. J.   +5 more
core   +1 more source

Sampling criteria for mutual over‐the‐air synchronisation of radar sensors

open access: yesElectronics Letters, 2021
Synchronisation of radar systems can be used to suppress interference and enable communication between radars. In this paper, a generalised Kuramoto model is proposed, which can be used to synchronise pulse repetition frequencies of two radars over‐the ...
Thomas Dallmann
doaj   +1 more source

INVESTIGATION ON CIRCULAR MAPPING BY FMCW-SAR ON SMALL AIRPLANES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The evaluation of local damages after natural disasters by using remote sensing demands for flexible platforms as well as sensor systems, which guarantee both weather- and daylight-independence.
S. Palm, S. Palm, A. Maresch, U. Stilla
doaj   +1 more source

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