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- W127347482 abstract "Several vegetation indices were developed by ratioing or linear combinations of different spectral bands to characterize vegetation status with remote sensing measurements. These indices are primarily sensitive to vegetation, but also to non vegetation related factors such as soil background variations, atmospheric conditions, and sensor viewing geometries. Consequently, there is a need to quantify these effects when utilizing these vegetation indices. A sensitivity analysis of existing vegetation indices was made using both modeled spectral data and ground based remote sensing measurements. The analysis was made with respect to soil background, atmosphere, and sensor viewing geometries. General criteria to evaluate vegetation indices were established, and based on these criteria, a new index was developed. The new index was developed by adapting the reflectance in blue region for the atmospheric corrections in the Modified Soil Adjusted Vegetation Index (MSAVI). The resultant Atmosphere Soil Vegetation Index (ASVI) was compared with other indices and it increased vegetation sensitivity while further reducing soil and atmospheric effects. However, differences found among these vegetation indices may not be statistically significant, and further studies are, therefore, needed with satellite and ground based data." @default.
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- W127347482 date "1994-01-01" @default.
- W127347482 modified "2023-09-26" @default.
- W127347482 title "External factor consideration in vegetation index development" @default.
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