Method of optimizing a response of a gas correlation radiometer to a trace amount of a target gas
US6822236B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2004 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Mar 18, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3513
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method optimizes gas correlation radiometer response to trace amounts of target gas in the free atmosphere in competition with interfering gas. Operations identify spectral regions of a first absorption spectrum of the target gas, and of a second absorption spectrum of the interfering gas. A set of similarity data is determined as a function of overlap regions within the spectral region, and a set of contrast data is determined as a function of non-overlap regions within the spectral region, including a plurality of data items within each of a plurality of bandwidths, and a data item corresponding to a center wavelength within each bandwidth. Graphs correspond to each bandwidth. From one graph a center wavelength of an infrared filter is selected, and from another graph there is selected a bandwidth of the infrared filter, to configure an infrared filter for use with the gas correlation radiometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.