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Evaluation of airborne visible/infrared imaging spectrometer data of the mountain pass, california carbonatite complex
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Crowley Sr., James Podwysocki, Melvin Meyer, David Rowan, Lawrence |
| Copyright Year | 1988 |
| Description | Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data of the Mountain Pass, California carbonatite complex were examined to evaluate the AVIRIS instrument performance and to explore alternative methods of data calibration. Although signal-to-noise estimates derived from the data indicated that the A, B, and C spectrometers generally met the original instrument design objectives, the S/N performance of the D spectrometer was below expectations. Signal-to-noise values of 20 to 1 or lower were typical of the D spectrometer and several detectors in the D spectrometer array were shown to have poor electronic stability. The AVIRIS data also exhibited periodic noise, and were occasionally subject to abrupt dark current offsets. Despite these limitations, a number of mineral absorption bands, including CO3, Al-OH, and unusual rare earth element bands, were observed for mine areas near the main carbonatite body. To discern these bands, two different calibration procedures were applied to remove atmospheric and solar components from the remote sensing data. The two procedures, referred to as the single spectrum and the flat field calibration methods gave distinctly different results. In principle, the single spectrum method should be more accurate; however, additional fieldwork is needed to rigorously determine the degree of calibration success. |
| File Size | 445281 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890012798 |
| Archival Resource Key | ark:/13960/t7wm65v2h |
| Language | English |
| Publisher Date | 1988-09-15 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Imaging Spectrometers Systems Stability Performance Tests Calibrating Signal To Noise Ratios Igneous Rocks Infrared Imagery Remote Sensing Noise Spectra Wavelengths Rare Earth Elements Spectrum Analysis White Noise Absorption Spectra Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
