Gaofen-1 TCARI/OSAVI
TCARI/OSAVI for Gaofen-1
Vegetation Satellite Provider: CNSA
Applications
crop chlorophyll content estimation
precision agriculture
vegetation stress detection
land cover change monitoring
vegetation health assessment
agricultural monitoring
Quick Stats
Category: vegetation
Sensor: Gaofen-1
Provider: CNSA
Bands Used: 4
Description
TCARI/OSAVI is a combined vegetation index that integrates the Transformed Chlorophyll Absorption in Reflectance Index (TCARI) with the Optimized Soil-Adjusted Vegetation Index (OSAVI). It is designed for accurate estimation of crop chlorophyll content while minimizing the effects of soil background and leaf area index variations.
Formulas
General Formula
Gaofen-1 Specific Formula
3 * (Panchromatic - Panchromatic) - 0.2 * (Panchromatic - Green) * (Panchromatic / Panchromatic) / [(1 + 0.16) * (NIR - Panchromatic) / (NIR + Panchromatic + 0.16)]Spectral Band Visualization
Band Wavelengths
550: 550
670: 670
700: 700
800: 800
Code Examples
tcari_osavi.py
References
Haboudane et al. (2002) - Integrated narrow-band vegetation indices for prediction of crop chlorophyll content
Wu et al. (2008) - Estimating chlorophyll content from hyperspectral vegetation indices
Zarco-Tejada et al. (2007) - Remote sensing of vegetation biophysical parameters for detecting stress conditions