Patent ID: 8428897

Claim:
A machine implemented method for spectral analysis in computing hardware, the method comprising: in a processor: determining a measure of cross coherence between application of an adaptive spectral estimation filter having a first weight to data to generate a first power-frequency spectrum with a first resolution and a conventional spectral estimation filter having a second weight to the same data to generate a second power-frequency spectrum with a second resolution, the determining performed by cross-correlating the first-power frequency spectrum of the adaptive spectral estimation filter with the second power-frequency spectrum of the conventional spectral estimation filter, wherein the measure of cross coherence is a power-frequency spectrum with a higher resolution than the first resolution of the first power-frequency spectrum or the second resolution of the second power-frequency spectrum, the measure of cross coherence adapted to resolve at least two closely spaced features at the higher resolution; and identifying a spectral feature of the measure of cross coherence.