Results 221 to 230 of about 127,490,332 (269)
Recent results in MIMO over-the-horizon radar
2008 IEEE Radar Conference, 2008 A demonstration of multiple-input multiple-output over-the-horizon radar is presented. Transmitter signal beam- forming on a multi-element array has been created, not conventionally before transmission at the transmitter facility, but, after radar signal transmission, skywave propagation, target scattering, return signal propagation, and reception ...
G. J. Frazer +3 more
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Climatological Model of Over‐the‐Horizon Radar
Radio Science, 2018 AbstractModels of radar systems are required for a variety of reasons. The sophistication of these models is highly dependent on their purpose; for instance, microwave radar models, which are designed to be integrated into existing wargaming simulation frameworks, will often be low‐fidelity models. The development of similar models of over‐the‐horizon (
M. A. Cervera +2 more
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Over-the-Horizon radar in the HF band
Proceedings of the IEEE, 1974Over-the-horizon (OTH) HF radar using sky-wave propagation via refraction by the ionosphere is capable of detecting targets at distances an order of magnitude greater than conventional microwave radar limited by the line of sight. Some of the characteristics, capabilities, and limitations of OTH radar based on the experience of the MADRE radar as ...
J.M. Headrick, M.I. Skolnik
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Looking over the horizon (HF radar)
IEEE Spectrum, 1990The history of HF (over-the-horizon) radar and its basic principles are outlined. Advances in signal processing that have made HF radar an operational reality are reviewed. Working units that the US Navy and the US Air force have in place, as well as some units under construction are described.
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A Multistatic Over-the-Horizon Radar Simulator
2025 IEEE Radar Conference (RadarConf25)13611366A multistatic Over-the Horizon (OTH) radar network can offer long-range, wide-area early warning for distant threats, such as ballistic and hypersonic missiles.
Svante Björklund +5 more
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Concurrent Operation of Two Over-the-Horizon Radars
IEEE Journal of Selected Topics in Signal Processing, 2007By exploiting the reflective and refractive nature of high-frequency (HF) radiowave propagation through the ionosphere or the conducting sea surface, over-the-horizon radar (OTHR) systems perform wide-area surveillance at long range well beyond the limit of the horizon of conventional line-of-sight (LOS) radars.
Yimin Zhang 0001 +2 more
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Multitarget Tracking Using Over-the-Horizon Radar
2018 21st International Conference on Information Fusion (FUSION), 2018Most conventional multitarget tracking systems assume that in each scan there is at most one measurement for each target. This assumption is, however, not valid for over-the-horizon radar (OTHR), where a target can generate multiple measurements through different propagation modes. A typical multitarget tracking algorithm may fail in this system.
Leilei Guo, Jian Lan, X. Rong Li
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Target tracking in over the horizon radar
Signal Processing, Sensor/Information Fusion, and Target Recognition XXVIII, 2019This paper describes the application of the Deep Target Extractor (DTE), developed from the Maximum Likelihood Probabilistic Multiple Hypothesis Tracker (ML-PMHT), to measurements from an over-the-horizon radar (OTHR) observing a highly maneuvering target (HMT).
Finelli A. +4 more
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2008 IEEE Radar Conference, 2008
The tutorial provides an introduction to the fundamental principles of high frequency over-the-horizon (OTH) radar, including sky-wave and surface-wave systems as well as other bi-static HF radar architectures. The main challenges of operating in the HF environment are described and connected to motivate and explain the architecture and design of ...
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The tutorial provides an introduction to the fundamental principles of high frequency over-the-horizon (OTH) radar, including sky-wave and surface-wave systems as well as other bi-static HF radar architectures. The main challenges of operating in the HF environment are described and connected to motivate and explain the architecture and design of ...
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Over-the-Horizon: Not Just for Radar Anymore
Computing in Science & Engineering, 2005A few months ago, I heard an interesting colloquium by John Hopcroft, one of the preeminent thinkers in the area of theoretical computer science. His talk mirrored his current investigative passion--future directions in theoretical computer science--but his approach can be instructive to anyone concerned with what I call adaptive anticipation ...
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