Patent ID: 8676147

Claim:
A detection system comprising: a receiver configured to detect electromagnetic energy and to generate a receiver signal representative of the detected electromagnetic energy; an analog-to-digital converter (ADC) coupled to said receiver, said ADC configured to receive the receiver signal and to generate a plurality of signal samples based on the receiver signal; and a detection module coupled to said ADC, said detection module configured to: identify a plurality of sample offsets for the plurality of signal samples; execute a plurality of autocorrelation functions on the plurality of signal samples to provide an output of each of the autocorrelation functions, wherein each autocorrelation function of the plurality of autocorrelation functions is executed on at least a portion of the plurality of signal samples identified by a sample offset of the plurality of sample offsets; compute a sum of the autocorrelation function outputs; normalize the sum of the autocorrelation function outputs; and determine whether a signal of interest is present within the electromagnetic energy based on the normalized sum.