Patent ID: 6768971
Filing Date: 2004-07-27
Classification: G01S

Abstract:
Apparatus for determining the polarization of a signal having vertical and horizontal components comprising:(a) one or more registers for storing a first series of sample values representing a horizontal component of the signal and for storing a second series of sample values representing a vertical component of the signal; (b) a plurality of sets of cyclically operative calculation elements connected to said one or more registers, each such set being arranged to combine values in said first and second series with one another so as to provide one or more output values for each cycle, said one or more registers being arranged to supply said different ones of said sample values to each such set on successive cycles of operation, whereby each such set will provide one or more series of output values when operated through a plurality of cycles, different ones of said sets of calculation elements being arranged to combine values according to different transfer functions, at least some of said sets of calculation elements being operative in parallel with one another; and (c) one or more evaluation circuits connected to at least some of said sets of calculation elements so as to receive the series of output values provided by such sets, said one or more evaluation circuits being operative to compare one or more characteristics of at least some of said series of output values and select one or more series having preselected characteristics and thereby identify the set of calculation elements which provided such one or more series and provide information about the polarization of the signal.