| タイトル | Intelligent information extraction from reflectance spectra Absorption band positions |
| 著者（英） | Jones, J. L.; Huguenin, R. L. |
| 著者所属（英） | Massachusetts Univ. |
| 発行日 | 1986-08-10 |
| 言語 | eng |
| 内容記述 | A multiple high-order derivative analysis algorithm has been developed which can automatically extract absorption band positions from low-quality reflectance spectra with little degredation of accuracy. Overlapping bands with comparable widths and intensities can be resolved whose centers are as close as 0.3-0.5 W, with safer resolution limits of 0.6-1.0 W band center separations suggested for overlapping bands that are dissimilar. The segment length for smoothing is continually adjusted to about 0.5 W to minimize signal distortion, and a spectral pattern recognition algorithm predicts the signal spectrum and calculates approximate W across the spectrum using its second derivative. A single-pass cubic spline is applied to the smoothed data, and a sliding segment sixth-order polynomial is fit to the spectrum, with the length of the segment being continuously locally adjusted to 1.0 W across the spectrum. Good reliability and consistency of the algorithm is demonstrated with application to laboratory and earth-based telescope spectra. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 87A21954 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/380391 |
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