FAQ: What are the minimal requirements for SNAP?
It depends a bit on the spatial distribution of your sensors - how large is your agricultural area?
The easiest way is to plot measurements from the field against the calibrated backscatter values in a scatter plot and derive a regression equation. Please have a look at these topics:
- Backscatter values extracted and make regression analysis - #31 by ABraun
- Soil moisture mapping using Sentinel-1-Data and SNAP? - #26 by Anna2
- Soil moisture identification -Sentinel - #20 by ABraun
- Soil Moisture Mapping Using S1_SLC product and s1tx
Pre-Processing is comparably easy, the most important steps are radiometric calibration (and conversion to dB) and geocoding: Radiometric & Geometric Correction Workflow - #35 by ABraun