Systems and methods for spectral processing improvements in spatial heterodyne spectroscopy
US11486762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2021 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Jul 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/4531
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Raman spectroscopy data is collected using a Spatial Heterodyne Spectrometer and processed in order to reduce signal noise. The processing of the Raman spectroscopy data includes segmenting generating an interferogram from the Raman spectroscopy data, segmenting the interferogram, determining an estimate of power spectrum density, and averaging the estimates of power spectrum density for each segment to provide an output spectrum. The output spectrum has greatly reduced variance of the individual power measurements, and allows the length of segments to be optimized to balance noise reduction operations and the loss of frequency resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.