Adaptive matched filter

Details Adaptive matched filter Adaptive matched filter

1987-12-10

1989-11-21

Fleming, Michael R.

Boots, shoes, and leggings

36472803, 36472411, 36472417, G06F 15336

Patent

active

048826685

ABSTRACT:
An apparatus provides matched filter output characteristics for known signals embedded in noise signals that have varying noise power distributions. The system correlates applied signals with a manipulated version of the applied signals in an analog-to-analog correlator. The manipulated signals are derived by Fourier transforming the applied signals and estimating the noise power spectral density. A filter transfer function is then calculated using the noise power estimates and stored information related to the characteristics of the known signal. The transfer function is then inverse Fourier transformed to provide a filter impulse response characteristic which is correlated with the applied signals. A method of processing applied signals to provide for an enhanced signal-to-noise ratio for varying noise power distributions is also disclosed.

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