Patent ID: 9092371
Filing Date: 2015-07-28
Classification: G01R,G06F,H04L

Abstract:
1. A method of making a radio frequency receiver to receive a radio frequency signal from an unknown origin comprising the steps of: configuring the receiver for recognizing signals of unknown modulation, bandwidth and pulse shape, the receiver including one or more digital processors and a memory device for storing a pulse shape library; configuring one or more of the processors as a special purpose processor including a spectrum computation block, a curve fit block, and a best shape selector block; wherein the receiver acquires an input frequency spectrum including plural different radio frequency signals having respective different signal shapes and respective different shape equations; wherein signal recognition includes use of the special purpose processor to a) construct plural shape equation combinations from the shape equations, b) model the spectrum with plural shape equation combination curve fits, c) evaluate a goodness of fit metric for each curve fit, and, d) select the curve fit that best fits the input frequency spectrum as indicated by a goodness of fit metric; wherein the receiver intercepts or avoids the signal from the unknown origin based on the selected curve fit.