Robust spectral analyzer for one-dimensional and multi-dimensional data analysis
US8481912B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2012 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Sep 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of analyzing a spectrum of one-dimensional or multi-dimensional signal X(t) requires a number of steps including deriving coefficients [AN(ω), BN(ω)] of an Lp-norm harmonic regression of the signal with 0<p≦∞ and p≠2, squaring the coefficients, summing the squared coefficients, and scaling the summed, squared coefficients with a constant c to realize a periodogram of X(t) as LN(ω)=c{[AN(ω)]2+[BN(ω)]2}. The method may include receiving the signal X(t), storing the received signal X(t), and outputting the periodogram LN(ω). The method may still further include scanning to maximize the periodogram LN(ω) by identifying its largest peak(s) and comparing the amplitude of the identified largest peak(s) with a threshold to determine if the largest peak(s) is(are) attributable to a presence of a periodic signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.