American Journal of Applied Sciences

A New Method for Multipath Clustering for Over-the-Horizon Radar

Ashraf M. Aziz, Senior Member, IEEE, Mohamed A. Abdel-Rahman and Saeed A. Al-Ghamdi

DOI : 10.3844/ajassp.2016.1014.1026

American Journal of Applied Sciences

Volume 13, Issue 10

Pages 1014-1026

Abstract

Over-the-Horizon Radar (OTHR) exploits the refraction of high frequency radiation through the ionosphere layers to detect targets beyond the line-of-sight horizon. Multipath propagation between the radar and the detected targets may results in multiple spatially separated tracks for a single target to be observed at the receiver site. Consequently there is a heavy traffic, especially in case of multiple targets, to be associated and combined if there are tracks represent the same target. In this study, a new method for multipath clustering for OTHR is proposed. The proposed method describes the similarities between all tracks as fuzzy degrees of membership. This method can operate in real-time and can perform clustering and fusion of OTHR tracks with tracks from other sources such as targets reporting global positioning systems and microwave radars. The proposed method has the advantages of less computations and high efficiency compared to conventional fuzzy logic clustering techniques. It has also the advantage of treating all the tracks data at once rather than pairwise. The efficiency of the proposed method is demonstrated using simulated examples.

Copyright

© 2016 Ashraf M. Aziz, Senior Member, IEEE, Mohamed A. Abdel-Rahman and Saeed A. Al-Ghamdi. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.