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What satellites are used in Farm 360?
Farm 360 provides access to images acquired by the following satellite constellations.
Sentinel 2: is a constellation of 2 satellites managed by the European Space Agency (ESA). It has the following features:
- Resolution: 10m.
- Revisit frequency: 5 days, in certain areas, every 2 to 3 days.
- Availability in Farm 360: since June 2015.
Landsat 8: is an earth observation satellite managed by NASA. It was launched in 2013 and has the following features:
- Resolution: 30m.
- Revisit frequency: every 16 days.
- Availability in Farm 360: since May 2014.
Planet: It is a high-resolution, high-frequency satellite. It has the following characteristics:
- Resolution: 4m.
- Revisit frequency: approximately daily.
Resolution comparison between Landsat and Sentinel:
Spectral bands and monitoring index generation
Both satellites capture images composed of different spectral bands.
Farm 360 processing engine combines the data provided by each band, to obtain multiple indexes: NDVI, EVI, SAVI, NDRE (only on Sentinel), NDMI, NDWI, as well as true color (TC) and false color (FC) images.
Different indexes can be more suited for analyzing different aspects of the crop cycle.
The more you are able to distinguish which index to use for each stage of the crop cycle, the better readings you can make from the satellite monitoring and the more accurate will be your approach to what is happening on the field/farm.