TAVI CALCULATION METHOD BASED ON WAVEBAND RATION MODEL AND SOLAR ELEVATION ANGLE

A TAVI calculation method based on a waveband ratio model and solar elevation angle, comprising the following steps: performing image pre-processing to obtain remote sensing image apparent reflectance data; analysing image quality and numerical distribution; calculating a shadow vegetation index; constructing a TAVI combined algorithm: ; using the solar elevation angle to calculate an adjustment factor f(Δ); and finally obtaining TAVI vegetation information resistant to topographical influence. Said TAVI is composed of the two waveband ratio sub-models RVI and SVI, the denominator thereof being remote sensing image red light waveband data, the adjustment factor f(Δ) using the solar elevation angle as a calculation parameter, and a sensor factor being introduced, having high physical significance; the TAVI calculation method does not require DEM data and remote ...