Patent ID: 6853933
Filing Date: 2005-02-08
Classification: G01S,G06K

Abstract:
1. A method for identifying spectral impulses, comprising the steps of: applying a processing window to an acquired waveform to produce a filtered waveform; performing an FFT function on said filtered waveform to produce a spectrum of bins, said bins being evenly spaced in frequency; selecting a target bin and a first predetermined range of bins by locating an estimating window on said spectrum and centered on said target bin; excluding a second predetermined range of bins adjacent to said target bin, said second predetermined range of bins being smaller than said first predetermined range of bins; forming a noise estimate from remaining bins, other than said target bin and said excluded bins, lying within said estimating window; comparing said noise estimate to said target bin to produce a result; and identifying a spectral impulse when a result of said comparison exceeds a predetermined threshold.