NDVI Spectral Reflectance Lab (2D)

This simulator rebuilds satellite vegetation monitoring around a continuous reflectance spectrum rather than a discrete two-band mixture: a physically-motivated leaf optical model produces R(λ) across 400–1000nm from chlorophyll content and mesophyll structure, real sensor bands are integrated out of that spectrum to compute NDVI, and the red-edge inflection point is located numerically from the spectral slope — the same first-derivative technique used on real hyperspectral imagery. A logistic canopy-growth equation is integrated live across a simulated growing season, so vegetation cover and the resulting NDVI genuinely emerge from temperature and water availability instead of being read off a static slider.