Composito di esposizione al rumore a 100m. Sovrapposizione AHP pesata di 5 fattori: distanza da strade principali (0.40), ferrovie (0.25), aeroporti (0.15), densità urbana GHSL (0.12), aree industriali/commerciali (0.08). Composizione ibrida: OSM Overpass + scipy distance_transform_edt locale, GHSL da GEE. Output: raster a 2 bande (score 0-1, qualità 0-1). NON calibrato in dB.
score(p) = Σᵢ wᵢ·fᵢ(p)·validᵢ(p) / Σᵢ wᵢ·validᵢ(p)
| Factor | Source | Weight | Normalization |
|---|---|---|---|
| Distance to major roads | OSM (motorway/trunk/primary/secondary) | 0.40 | Log-distance decay, 2km cap |
| Distance to railways | OSM (rail/light_rail/subway) | 0.25 | Log-distance decay, 1.5km cap |
| Distance to airports | OSM (aeroway=aerodrome) | 0.15 | Log-distance decay, 10km cap |
| Urban built-up density | JRC GHSL/P2023A/GHS_BUILT_S | 0.12 | Built-up fraction [0,1] |
| Industrial/commercial | OSM (landuse=industrial/commercial/retail) | 0.08 | Linear decay, 500m cap |