Results 131 to 140 of about 21,397 (182)

Spatial adaptive subspace detection in OTH radar

IEEE Transactions on Aerospace and Electronic Systems, 2003
The work presented here addresses the problem of target detection against spatially structured interference composed of jamming plus noise, where for practical reasons, the received target wavefront may also deviate from the traditional plane wave model.
G.A. Fabrizio, A. Farina, A. Marconi, M.D. Turley   +3 more
openaire   +3 more sources

Modeling and performance of HF/OTH radar target classification systems

IEEE Transactions on Aerospace and Electronic Systems, 1992
The effects of a class of multipath propagation channels on the performance of a over-the-horizon (OTH) radar target classification system are considered. A Rician frequency-selective fading channel model is employed to characterize the effects of the multipath propagation medium and evaluate the performance of radar target classification systems.
D.J. Strausberger, N.F. Chamberlain, F.D. Garber, E.K. Walton   +3 more
openaire   +3 more sources

Prediction Method of Ship-Based Microwave OTH Radar Detection Range

2016 8th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC), 2016
A method was proposed of predicting ship-based over the horizon (OTH) radar maximum detection range. Firstly, the method to measure parameters and the modification is given based on the virtual condition for measurement on the ship. Then, the atmospheric refractivity profile was calculated by P-J model with hydrometeorology parameters.
Mengda Cui, Hao Cha
openaire   +3 more sources

OTH radar phenomenology: signal interpretation and target characterization at HF

IEEE Aerospace and Electronic Systems Magazine, 2017
Implicitly or explicitly, the extraction of information from radar echoes is based on a physical model of the interaction between the radar system and the target, the study of which is sometimes referred to as radar phenomenology [1]. It follows that the detail and fidelity of the physical model determine the prospective observables, the accuracy of ...
Stuart Anderson
openaire   +3 more sources

Detection Performance of MIMO-OTH Radar: Advantages of Multipath Ionospheric Propagation

2012 IEEE 12th International Conference on Computer and Information Technology, 2012
Multipath ionospheric propagation (MIP), a typical phenomenon the sky wave over-the-horizon (OTH) radar may encounter, is often viewed as an annoying factor to be eliminated in the traditional OTH radars. In this paper, we consider multiple-input multiple-output sky wave over-the-horizon (MIMO-OTH) radar with closely spaced antennas.
Xiaodong Li, Qian He, Boxiao Han, Zishu He   +3 more
openaire   +3 more sources

Sources for OTH radar array calibration

IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002
Modern over-the-horizon (OTH) radars currently being developed for coastal surveillance incorporate antenna arrays which are to be erected quickly with minimal site preparation. For such arrays, array calibration is necessary. Meteors, noise sources and beacons (special sources) may be used for calibrating these OTH radars.
I.S.D. Solomon, D.A. Gray, Yu.I. Abramovich   +2 more
openaire   +1 more source

Performance of OTH radar array calibration

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181), 2002
Array calibration algorithms for over-the-horizon (OTH) radar arrays have been proposed in the literature. These algorithms perform array calibration by using echoes from ionised meteor trails, and estimate sensor position errors and mutual coupling. We derive the Cramer-Rao performance bound for this array calibration problem and then investigate the ...
I.S.D. Solomon, Yu.I. Abramovich, D.A. Gray, S.J. Anderson   +3 more
openaire   +1 more source

Knowledge-based signal processing in OTH radar

Proceedings of 2011 IEEE CIE International Conference on Radar, 2011
This paper is concerned with knowledge-based processing technique in high-frequency over the horizon radar (OTHR) to improve radar performance. Knowledge-based processing technique is proposed to increase target detection probability, reduce false alarm in heavy clutter, correct target measurement error and assess battlefield situation.
null Lei Zhiyong, null Ni Jin
openaire   +1 more source

Traveling Ionospheric Disturbance Mitigation for OTH Radar

2007 IEEE Radar Conference, 2007
Deflection of HF propagation paths by traveling ionospheric disturbances (TIDs) remains a troubling cause of coordinate registration errors for over-the-horizon (OTH) radar. Bandwidth and coverage limitations in ionospheric soundings preclude the ability to model TID structure in real time in most cases.
L. J. Nickisch, Mark A. Hausman, Sergey Fridman   +2 more
openaire   +1 more source

Narrow-band interference suppression technology of OTH radar

2002 3rd International Conference on Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002., 2003
In over-the-horizon (OTH) radar, the frequency band is limited by crowded and powerful interference. It is difficult to find an uncontaminated and broad band, which leads to low range resolution and signal-to-interference and noise ratio (SINR). A desired method is the suppression of interference in a definite bandwidth.
null Yang Zhi-qun, null Ni Jin-lin, null Liu Guo-sui   +2 more
openaire   +1 more source