Signal processor
AssigneeRaytheon Company
InventorsSudha S. Reese, Paul F. Neidhardt
Life of this patent
Estimating the term…
Abstract
A signal processor which operates on an incoming signal to separate the signal into locally compact wavelets in the time frequency domain is described. The processor includes means for separating an incoming signal into a plurality of signals, with said signals occupying one of a corresponding plurality of channels, with each channel having a predetermined passband characteristic. The processor further includes means for scaling the filtered signals from the plurality of channels by an estimate of background noise in the filter data and detector means fed by said plurality of scaled signals for integrating coherent components of said filtered scaled signals.
Claims21
A signal processor comprising:
- means for separating an incoming signal into a plurality of signals with each one of said plurality of signals occupying one of a corresponding plurality of channels with each channel having a predetermined passband characteristic;
- and
- detector means fed by each one of said plurality of signals for integrating coherent components of said plurality of signals, said detector means further comprising:
- means for integrating coherent components of said signal within each one of said passbands;
- and
- means for integrating coherent components of said signals across each one of said passbands.
A signal processor comprising:
- a bank of bandpass filters, each one of said bandpass filters having an asymmetric filter response with each one of said bandpass filters having a passband which overlaps the passband of a preceding one of said filters;
- signal compression means coupled to each one of said bandpass filters, for scaling signals from said bandpass filter by an estimate of background noise in said filtered signals;
- and
- detector means coupled to said compression means for integrating coherent components of filtered, compressed signals within each one of said channels, and for integrating said integrated component across each of said channels.
A receiving system comprising:
- means for receiving energy and for converting said energy into electrical signals;
- means, responsive to said electrical signals, for providing a plurality of channels, each channel having a selected passband characteristic with each passband characteristic of said channels further having a high frequency passband cut-off of at least 200 dB per octave;
- signal compression means, fed by each one of said plurality of signals, for scaling each of said plurality of signals by an estimate of background noise in each corresponding one of said plurality of signals;
- and
- means, fed by each one of said scaled plurality of signals from said scaling means, for integrating coherent components of said filtered compressed signal within each one of said channels and for integrating said integrated coherent signal components over each of said channels.
Dependencies are inferred from the claim text.