# Information for Sensor and Index

## Formula

General Formula $\left(\frac{{\mathrm{700nm}}}{{\mathrm{670nm}}}\right)\frac{\sqrt{{\left({a}·670+{\mathrm{670nm}}+{b}\right)}^{2}}}{{\left({{a}}^{2}+1\right)}^{0.5}}$ $\left(\frac{{\mathrm{Red_edge}}}{{\mathrm{Red}}}\right)\frac{\sqrt{{\left(\frac{{\mathrm{Red_edge}}-{\mathrm{Green}}}{150}·670+{\mathrm{Red}}+\left({\mathrm{Green}}-\left(\frac{{\mathrm{Red_edge}}-{\mathrm{Green}}}{150}·550\right)\right)\right)}^{2}}}{{\left(\frac{{\mathrm{Red_edge}}-{\mathrm{Green}}}{{150}^{2}}+1\right)}^{0.5}}$ Automatic

## Sensor

Name RapidEye TACHYS (Rapid), MATI (Eye), CHOMA (Earth), CHOROS (Space), TROCHIA (Orbit) 5 440-850 5-5 0 Rapid eye AG 2008-08-29 yes

## Index

Name Chlorophyll Absorption Ratio Index CARI $\left(\frac{{\mathrm{700nm}}}{{\mathrm{670nm}}}\right)\frac{\sqrt{{\left({a}·670+{\mathrm{670nm}}+{b}\right)}^{2}}}{{\left({{a}}^{2}+1\right)}^{0.5}}$ b=(550nm-((700nm-550nm)/150*550)), a=(700nm-550nm)/150 550,670,700 Original formula

## References

Nr. Author/Title Year Comment
1 Main, Russell; Cho, Moses Azong; Mathieu, Renaud; Oâ€™Kennedy, Martha M.; Ramoelo, Abel; Koch, Susan - An investigation into robust spectral indices for leaf chlorophyll estimation 2011

Sensor

Index