Patent ID: 8194766
Filing Date: 2012-06-05
Classification: G01S

Abstract:
1. A signal detection apparatus, comprising: electronics configured to receive an RF input and to process the RF input applying a decision rule that utilizes Fast Fourier Transforms (FFTs) of non-overlapping subsequences for a window function to generate K decision statistics whose cumulative distribution function (cdf) yield, independent of the noise variance and the FFT window type, a numerical value for the threshold, τ, of each decision statistic to determine if a man-made signal is present or to achieve a constant false alarm rate when only noise is present; wherein each of the decision statistics, denoted as C with M=number of N -pt FFTs to be computed, K=the number of FFT bins to be included in the decision statistics, κ=the set of FFT bins to be included in the decision statistics, L =M(K−1), and Γ(n)=(n−1)! for a positive integer n.