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US 7,030,808 B1Granted
Nonlinear target recognition
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsDaniel W. Repperger, Eric M. Alderman, M. Seddik Djouadi
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Abstract
Nonlinear target detection for the detection of extremely weak signals when buried in very high levels of noise is performed with improvement of the quality of the signals received in the data by the amplification of the signal to noise (S/N) ratio. The S/N ratio increases dramatically after the originally measured signal is passed through a nonlinear stochastic resonance filter.
Claims20
A highly sensitive, nonlinear target detection device comprising:
- a target signal;
- means for decomposing said target signal into Fourier components;
- an adder for summing a noise signal with said target signal;
- a nonlinear filter for transforming an output of said adder;
- means for analyzing output of said filtering step;
- and
- means for comparing output of said analyzing step with target parameters.
4 more elements
A highly sensitive, nonlinear target detection method comprising the steps of:
- providing a target signal;
- decomposing said target signal into Fourier components;
- summing a noise signal with said target signal;
- filtering output of said summing step through a nonlinear filter transformation;
- analyzing output of said filtering step;
- and
- comparing output of said analyzing step with target parameters.
4 more elements
Dependencies are inferred from the claim text.