Patent ID: 6651016
Filing Date: 2003-11-18
Classification: G01R

Abstract:
A method for processing an analog signal to produce an output vector representing a frequency spectrum of the analog signal, the method comprising the steps of:a. generating a periodically jittery clock signal of average period T seconds having N edges, wherein each Kth generated edge and every Mth generated edge thereafter has a similar timing error of JITTERK seconds, wherein K is an integer 0&lE;KK is other than constant for all values of K; b. digitizing the analog signal in response to each of the N clock signal edges to produce a vector (A) having N elements AJ, for all integer values of J, 0&lE;Jc. arranging all elements AJ of vector A into M vectors BK, for all integer values of K, 0&lE;Kth vector BK includes a Kth element AK of vector A and every Mth element of vector A thereafter; d. separately subjecting each vector BK to a Fourier transform function to produce a corresponding one of a set of M vectors CK, for all integer values of K, 0&lE;Ke. evaluating a correction function having as parameters JITTERK and vectors CK, for all integer values of K, 0&lE;K