NDLI: Multisensor Detection in Randomly Arriving Impulse Interference Using the Hough Transform

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Multisensor Detection in Randomly Arriving Impulse Interference Using the Hough Transform

Content Provider	IntechOpen
Author	Kabakchiev, Chr. Rohling, H. Garvanov, I. Behar, V. Kyovtorov, V.
Abstract	In this study, a new and more suitable modification of the Hough transform is presented. The polar Hough transform allows us to employ a conventional Hough detector in such real situations when targets move with variable speed along arbitrary linear trajectories and clutter and randomly arriving impulse interference are present at the detector input. The polar Hough transform is very comfortable for the use in search radar because it can be directly applied to the output search radar data. Therefore, the polar Hough detectors can be attractive in different radar applications. It is shown that the new Hough detectors increase probabilities, detection and coincidence, when the target coordinates are measured with errors. Three different structures of a multi-sensor polar Hough detector, centralized (CSA) and decentralized (DPA), are proposed for target/trajectory detection in the presence of randomly arriving impulse interference. The detection probabilities of the multi-sensor Hough detectors, centralized and decentralized, are evaluated using the Monte Carlo approach. In simulations, the radar parameters are synchronized in order to maintain a constant false alarm rate. The results obtained show that the detection probability of the centralized detector is higher than that of the decentralized detector. The results obtained shows that the required operational efficiency of detection can be achieved by using communication structures with low-rate-data channels. The target coordinate measurement errors in the (r-t) space mitigate the operational efficiency of multisensor Hough detectors. The needed operational efficiency requires the appropriate sampling of the Hough parameter space. The proposed multi-sensor Hough detectors are more effective than conventional singlechannel ones due to the usage of the Hough transform for data association. This operation increases the effectiveness of trajectory detection in the presence of randomly arriving impulse interference.
File Format	PDF
ISBN	9789533070292
DOI	10.5772/7180
Language	English
Publisher	Intech
Publisher Date	2010-01-01
Access Restriction	Open
Alternative Title	Radar Technology
Content Type	Text
Resource Type	Chapter

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