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Over-The-Horizon Radar (OTHR) In Canada
2018 19th International Radar Symposium (IRS), 2018OTHRs have recently been making a comeback in Canada, as the need for accurate long-range tracking becomes more important, and less-expensive, ground based radars are once again being considered for more effective long-range surveillance of Canadian airspace.
Thayananthan Thayaparan +3 more
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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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CFAR techniques for over-the-horizon radar
IEEE International Symposium on Intelligent Signal Processing, 2003, 2004Since the OTHR background noise is too strong, the target echoes would be embedded in sea clutter and environment noise. In order to detect targets such as ships or aircrafts from radar returns, a range Doppler CFAR schemes is presented, the identical Doppler frequency resolution cells over adjacent range or azimuth resolution cells are used to form a ...
null Meng Xiangwei +2 more
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Coherence in over-the-horizon radar
SPIE Proceedings, 2003The coherence of successive dwells from an Over-the-Horizon (OTH) High-Frequency (HF) radar (3-30 MHz) is investigated using a technique based on the spectrogram. Although the data are coherent within a dwell, it is not known if coherence is preserved from one dwell to the next, due to possible limitations of the signal processor.
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New horizons for over-the-horizon radar?
IEEE Antennas and Propagation Magazine, 1994Science stands to benefit from the quarter century of research and development, and $1.5 billion spent by the Air Force, to deploy six over-the-horizon (OTH-B) air-defense radars, now targeted for shutdown. Opportunities for environmental research and services on a grand scale beckon to anyone who can afford to operate and maintain them. Tests show the
T.M. Georges, J.A. Harlan
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Application of MIMO radar techniques to over-the-horizon radar
2016 IEEE International Symposium on Phased Array Systems and Technology (PAST), 2016Multiple-Input Multiple-Output (MIMO) radar has been an active topic in the radar research community for over a decade [1]–[3]. MIMO based approaches have been investigated for improving target detectability, improving target localisation, achieving higher spatial resolution, and clutter reduction using transmit or joint transmit-receive beamforming ...
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Maximum likelihood coordinate registration for over-the-horizon radar
IEEE Transactions on Signal Processing, 1997Over-the-horizon radar exploits the refractive and multipath nature of high-frequency propagation through the ionosphere to achieve wide-area surveillance. The coordinate registration process converts the group delays and azimuths (i.e., slant coordinates) from a set of multipath target returns to an estimate of its location (i.e., ground coordinates).
Jeffrey L. Krolik, Richard H. Anderson
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1999
There are two forms of 0TH radar, surface-wave and skywave. Surface-wave systems are relatively inexpensive and have found applications in sea sensing (see next chapter), for the defence of localized areas against low-flying missiles and to some extent for monitoring ship traffic.
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There are two forms of 0TH radar, surface-wave and skywave. Surface-wave systems are relatively inexpensive and have found applications in sea sensing (see next chapter), for the defence of localized areas against low-flying missiles and to some extent for monitoring ship traffic.
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High Frequency Over-the-Horizon Radar
2019 IEEE Radar Conference (RadarConf), 2019Presents a collection of slides covering the following topics: high frequency over-the-horizon radar; HF channel model; time-varying adaptive beamforming; space-time adaptive processing; GLRT detection schemes; HF passive radar; blind signal separation; multipath-driven geolocation and MIMO OTHR concept.
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Signal processing of sky wave over-the-horizon radar
IIEEE International Conference on Acoustics Speech and Signal Processing, 2002In this paper, A review of signal processing for sky wave over-the-horizon radar (OTHR) is presented. The radar's operating mode, and its advantages and limitations are introduced firstly. Then the techniques on interference suppression, correction of some ionospheric contamination, and ship detection are reviewed in detail.
Xin Guo +3 more
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