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Estimation of spectral emissivity in the thermal infrared
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kryskowski, David Maxwell, J. R. |
| Copyright Year | 1993 |
| Description | A number of algorithms are available in the literature that attempt to remove most of the effects of temperature from thermal multispectral data where the final goal is to extract emissivity differences. Early approaches include adjacent spectral band ratioing, broad band radiance normalization and the use of one band where emissivities are generally high (e.g., 11 to 12 micrometers) to determine the temperature. More recent work has produced two techniques that use data averaging to extract temperature to leave a quantity related to emissivity changes. These two techniques have been investigated and compared and appear to provide reasonable results. The analysis presented in this paper develops a thermal IR multispectral temperature/emissivity estimation procedure based on formal estimation theory, Gaussian statistics, and a stochastic radiance signal model including the effects of both temperature and emissivity. The importance of this work is that this is an optimal estimation procedure which will provide minimum variance estimates of temperature and emissivity changes directly. Section 2 discusses optimal linear spectral emissivity estimation and Section 3 is a summary. |
| File Size | 178742 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950017498 |
| Archival Resource Key | ark:/13960/t3jx3931k |
| Language | English |
| Publisher Date | 1993-10-25 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Multispectral Band Scanners Stochastic Processes Spectral Bands Estimating Linear Filters Narrowband Emissivity Thermal Emission Radiance Temperature Effects Spectrum Analysis Spectral Emission Infrared Radiation Mathematical Models Gauss Equation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
