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Proceedings Paper

New fan filters for multiple-frame track-before-detect applications
Author(s): Thomas L. Marzetta
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Paper Abstract

Clutter and noise can preclude single-frame detection of moving targets in image sequences, necessitating the application of multiple frame (3-D) filters. Two new types of 3-D fan filter show considerable promise in this application. The first type of fan filter suppresses all clutter and other objects whose velocity is contained in a user-specified velocity set. The ability to reject clutter over a continuous range of velocity is a great advantage of this class of filter with respect to velocity-notch filters such as the frame-to-frame subtracter. The second type of fan filter passes without attenuation all objects whose velocity is contained in a user-specified velocity set while providing the maximum possible suppression of broad-band noise. For detecting a target of unknown velocity in broad-band noise a bank of this type of fan filter can replace a band of 3-D matched filters, with the advantage of avoiding the velocity mismatch losses of the 3-D matched filter.

Paper Details

Date Published: 25 August 1992
PDF: 9 pages
Proc. SPIE 1698, Signal and Data Processing of Small Targets 1992, (25 August 1992); doi: 10.1117/12.139366
Show Author Affiliations
Thomas L. Marzetta, Nichols Research Corp. (United States)


Published in SPIE Proceedings Vol. 1698:
Signal and Data Processing of Small Targets 1992
Oliver E. Drummond, Editor(s)

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