WorldView Legion Ctr1

Simple Ratio 695/420 Carter1 for WorldView Legion

Vegetation Satellite Provider: MAXAR

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Applications

plant stress detection

early stress warning

water stress assessment

disease monitoring

nutrient deficiency detection

general plant health assessment

Quick Stats

Category: vegetation

Sensor: WorldView Legion

Provider: MAXAR

Bands Used: 2

Description

Carter1 (Ctr1) is one of the most effective plant stress indices developed by Gregory A. Carter. It uses the ratio of reflectance at 695nm (red-edge) to 420nm (blue) to detect various types of plant stress. This ratio was found to be significantly greater in stressed compared to non-stressed leaves for all stress agents tested.

Formulas

General Formula

WorldView Legion Specific Formula

Panchromatic / Coastal

Spectral Band Visualization

Band Wavelengths

420: 420

695: 695

Code Examples

carter1.py

References

Carter, G.A. (1994) - Ratios of leaf reflectances in narrow wavebands as indicators of plant stress. International Journal of Remote Sensing, 15(3), 697-703