Results 21 to 30 of about 1,166 (180)
Frequency management system (FMS) for over-the-horizon radar (OTHR) using a near-real-time ionospheric model [PDF]
, 2022 Sky-wave over-the-horizon radar (OTHR) propagates radio waves off the ionosphere to provide long-range surveillance around the Earth's curvature. Frequency selection for high-latitude and polar OTHRs is challenging unless there is an environmental ...
Hannah Villeneuve +13 more
core +1 more source
Unapređenje performansi izahorizontskih radara zasnovano na novoj arhitekturi sistema [PDF]
, 2023 Istraživanje ove doktorske disertacije rezultiralo je u razvoju naprednog rešenja za praktičnu primenu izahorizontnog radarskog sistema (OTHR). Ovaj doprinos obuhvata suštinske izmene u arhitekturi sistema, kao i hardverskom dizajnu i izradi antenskog ...
Džolić, Bojan
core +5 more sources
IET Radar, Sonar &Navigation, Volume 17, Issue 12, Page 1743-1759, December 2023., 2023 An overview of the past and current clutter theoretical models and clutter suppression techniques in the HFSWR system is provided. The experimental results involved in the complex long‐term ionosphere observation are discussed. Special attention is paid to the correlation between the signal degradation sources and eliminating clutter techniques ...
Xiaowei Ji +3 more
wiley +1 more source
Global Ecology and Biogeography, Volume 32, Issue 4, Page 535-547, April 2023., 2023 Abstract Aim Evaluating the similarity of diversity patterns across micro‐ to macroevolutionary scales in natural communities, such as species–genetic diversity correlations (SGDCs), may inform on processes shaping community assembly. However, whether SGDCs not only hold across communities but also across lineages has never been explored so far.
Maurine Vilcot +7 more
wiley +1 more source
Joint integrated track splitting for multi-path multi-target tracking using OTHR detections
EURASIP Journal on Advances in Signal Processing, 2018 In target tracking applications where an over-the-horizon radar (OTHR) is used to gather measurements, one target may generate more than one measurement at each scan due to the multi-path propagation effect.
Yuan Huang, Taek Lyul Song, Joo Hyun Lee
doaj +1 more source
Testing RFoF Link for Transmitting HF-OTHR Signal Between Transmitter and Receiver Shelters
Telfor Journal, 2021 HF-OTHR site contains two equipment shelters, up to 1 km away from each other, that need to be connected for transmitting a FMCW signal. This connection, if realized using a coaxial cable, has shown itself to be vulnerable to external electromagnetic ...
P. Petrović +6 more
doaj +1 more source
Societal Applications of HF Skywave Radar
Remote Sensing, 2022 After exploratory research in the 1950s, HF skywave ‘over-the-horizon’ radars (OTHR) were developed as operating systems in the 1960s for defence missions, notably the long-range detection of ballistic missiles, aircraft, and ships.
Stuart Anderson
doaj +1 more source
Real-Time Frequency Management System (FMS) for Sky-Wave High-Latitude Over-the-Horizon Radar (OTHR)
, 2022 A real-time frequency management system (FMS) is necessary for efficient operation of over-the-horizon-radar (OTHR) in high-latitude locations such as Canada's Arctic regions.
Villeneuve, Hannah +6 more
core +1 more source
High-Resolution Doppler and Azimuth Estimation and Target Detection in HFSWR: Experimental Study
Sensors, 2022 In this paper, we present a new high-resolution algorithm for primary signal processing in High Frequency Surface Wave Radar (HFSWR). The algorithm has been developed to achieve and improve primary signal processing performance in existing HFSWR radars ...
Dragan Golubović +2 more
doaj +1 more source
Introduction to Coastal HF Maritime Surveillance Radars
Polish Maritime Research, 2019 This paper presents the main technical characteristics and working performances of coastal maritime surveillance radars, such as low-power High-Frequency Surface Wave Radars (HFSWR) and Over the Horizon Radars (OTHR). These radars have demonstrated to be
Ilcev Dimov Stojce
doaj +1 more source