Results 141 to 150 of about 1,166 (180)

Hierarchical clustering for OTHR track fusion

Proceeding of 1st Australian Data Fusion Symposium, 2002
The Jindalee Operational Over-The-Horizon Radar Network has three radar stations. Targets may be detected by more than one radar. Associating multiple tracks that belong to one target presents a large operator workload. Several methods have been suggested to automate the association of tracks in pairs.
M. Mohandes, R.E. Bogner, A. Bouzerdoum
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Over-The-Horizon Radar (OTHR) In Canada

2018 19th International Radar Symposium (IRS), 2018
OTHRs 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, Yousef Ibrahim, John Polak, Ryan Riddolls   +3 more
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Forward-based Receiver Augmentation for OTHR

2007 IEEE Radar Conference, 2007
An experimental multi-static HF radar is described that augments conventional over-the-horizon radar (OTHR) by placing multiple forward-based receiver systems within line-of-sight of targets of interest. With sufficient and appropriately located forward-based receiver sites the radar can generate target tracks that are independent of the uncertain ...
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OTHR Multipath Tracking with Correlated Virtual Ionospheric Heights

2018 21st International Conference on Information Fusion (FUSION), 2018
This paper proposes a new virtual ionospheric height model for over-the-horizon radar (OTHR) target tracking. Considering the spatial correlation of different ionosphere site, the virtual ionospheric heights are modeled by a Gaussian Markov random field (GMRF). The priors of the GMRF model can be learned from the historical measurements from ionosondes.
Zhen Guo, Zengfu Wang, Yumei Hu, Quan Pan 0001, Jun Zhang   +4 more
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Fractal Features and Detection of Meteor Interference in OTHR

2006 CIE International Conference on Radar, 2006
Backscatter signal from OTHR receiver may contain strong noise and interference background, among which the meteor echo is a typical and strong impulsive interference. This meteor echo may inject transient but great power into the receiver, arise the noise floor in the range-doppler map and decrease SNR. So it must be suppressed before target tracking.
Liu Tao, Gong Yaohuan, Wei Min, null Li Jun   +3 more
openaire   +1 more source

EMDs-PHD algorithm for OTHR multi-target tracking

2016 IEEE International Conference on Information and Automation (ICIA), 2016
There exist the low data rate, low detection probability, low measurement precision problem and multi-path effects of ionosphere in the Over the Horizon Radar (OTHR) multi-target tracking. The exponential mixture density probability hypothesis density filter (EMDs-PHDF) based on random finite set (RFS) is proposed.
Feng Yang, Hao Chen, Pengyan Zhang, Keli Liu   +3 more
openaire   +2 more sources

HF OTHR target detection and estimation subsystem

IEEE Aerospace and Electronic Systems Magazine, 1999
This paper describes the principle of the target detection and estimation with a high frequency ground wave over-the-horizon radar, introduces the structure and the implementation of the detection and estimation subsystem that can process signals in parallel. The accomplished experimental results demonstrate that this system can successfully detect and
null Wang Wei, null Peng Yingning, null Quan Taifan, null Liu Yongtan   +3 more
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PDAF versus PMHT performance on OTHR data

2003 Proceedings of the International Conference on Radar (IEEE Cat. No.03EX695), 2004
Over the Horizon Radar (OTHR) is the primary Australian wide area surveillance sensor. The radar tracking system currently used for OTHR is based on the Probabilistic Data Association Filter (PDAF). Research and development(R&D)has continued to improve tracking performance. R&D has been extended to include the Probabilistic Multiple Hypothesis Tracker (
S.B. Colegrove, S.J. Davey, B. Cheung
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A New Maneuvering Target Detection Algorithm in OTHR

Applied Mechanics and Materials, 2014
In the three-order polynomial phase signal, HAF can be used to reduce phase order to achieve the phase parameter estimation. The loss of signal to noise ratio in the order reduction processing is serious. In order to reduce the SNR loss, this paper uses CPF to reduce phase order.
Hui Yong Li, Wan Ge Li, Jin Feng Hu, Hui Ai, Zhi Rong Lin   +4 more
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Research on Aircraft Target Detection Probability for OTHR

Applied Mechanics and Materials, 2014
In this paper, a simulation method of detection probability of aircraft target for Over-The-Horizon Radar (OTHR) by computer is proposed. The effects of different ionosphere states on detection range for OTHR is concluded, which become constraint on simulation of detection probability.
Jing Jia, Wen Sheng, Lu Zhang
openaire   +1 more source