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Proceedings Paper

Dynamic range compensation in non-linear sensors
Author(s): Harold Szu; Michael Wardlaw; Jeff Willey
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Paper Abstract

A common objective with active magnetic, radio frequency, and acoustic sensors is to detect and sense small signals in the presence of large magnitude clutter or interference signals. When the interference to signal-of-interest ratio is greater than the dynamic range of the linear system, the system response may become non-linear. In this paper an adaptive analog cancellation approach is proposed to track and cancel the interference signal. The circuit's linear property is then recovered, enabling detection of the small magnitude signals. The concept was realized in an active RF sensor which demonstrated the effectiveness of the strategy.

Paper Details

Date Published: 4 June 2011
PDF: 9 pages
Proc. SPIE 8058, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering IX, 80580H (4 June 2011); doi: 10.1117/12.887405
Show Author Affiliations
Harold Szu, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Michael Wardlaw, Office of Naval Research (United States)
Jeff Willey, U.S. Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 8058:
Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering IX
Harold Szu, Editor(s)

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