Spectral Unmixing Applied to Desert Soils for the - Naval ...

However, the presences of BSCs are much more difficult to determine even
utilizing Google Earth for virtual ground-truthing; the resolution is just not good enough
to make a positive determination. Also, the expectation was that BSCs would be found in
higher concentrations but the lack of large swaths of target material does not support this
assumption, indicating that either there is minimal to no presence of BSCs or the spectra
are not unique enough to be differentiated from the soil.
4. Disturbed Creek Soil Endmember
While the majority of this analysis focuses on the two data sets with the highest
resolution, the lack of a substantial creek feature in the f110512t01p00r08 data set made
it necessary to use the lower resolution 15.2 m pixel f110623t01p00r10 data set.
Fortunately this larger data set had several creek features that could be analyzed using the
disturbed creek soil endmember for a repeatability test. Figure 36, insets A-C show the
results, which are somewhat similar to the camp road endmember in the initial
f110512t01p00r07 data set (Figure 36, inset A-C). However, the f110623t01p00r10
results were quite different than the camp road endmember (Figure 37). Similarly to
other results, the best identifications of target material are consistently within ranges
between 9-16% with increasingly greater false positives for larger percentage pixel
contributions.
70