By Topic

The physical causes of clutter and its suppression via sub-band processing

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Mark K. Prior ; NATO Undersea Research Centre, Viale San Bartolomeo 400, La Spezia, Italy ; Alberto Baldacci

Seafloor features that cause low-frequency, active sonar clutter are discussed and illustrated with data gathered in the Mediterranean Sea for signals with a 1 kHz bandwidth, centered on 1.3 kHz. A method is proposed to reduce the number of sonar contacts formed due to random returns in the data, i.e. "clutter points". The method uses band-pass filters to split the signal into a number of sub-bands and processes the sub-band data after contact-forming, using knowledge of the physical causes of clutter to reject clutter while retaining real contacts. Comparisons are made between sub-band and full-band processing and the improvements obtainable via the method are illustrated using the measured data with a shipwreck target. It is shown that the proportion of contacts associated with man-made features is increased when sub-band processing is used, relative to the full-band case

Published in:


Date of Conference:

18-21 Sept. 2006