Patent ID: 6529794
Filing Date: 2003-03-04
Classification: G01S

Abstract:
A method for distance and speed measurement, comprising the steps of:emitting signals that propagate in wave form and, after reflection at targets, registering the emitted signals as measured signals, so that said measured signals comprise a frequency modulation that is dependent on a value or values of a quantity or quantities to be measured; analyzing a frequency spectrum of the measured signals on the basis of a previously defined plurality of measured values; and the analyzing occurring by the steps of acquiring said plurality of measured values by sampling the measured signal at equidistant time intervals and storing the measured values in a predetermined sequence, except for equivalent conversions, diagonalizing a data matrix wherein the measured values are chronologically arranged as a double Hankel matrix according to a SVD method, determining an approximization of the diagonalized data matrix in that diagonal elements are set equal to zero beginning from a predetermined limit or from a limit calculated from a distribution of the diagonal elements, and calculating frequencies from remaining diagonal elements.