| NSDS Algorithm Specification | |
The NSDS operator algorithm computes the
Normalized Shortwave
Infrared Difference
Soil-Moisture from a given product.
The NSDS results from the following equation:
NSDS = (S1 - S2) / (S1 + S2)
, where:
The bands are:
- S1 is the SWIR 1 band
- S2 is the SWIR 2 band
Also the processor computes an additional flags band called 'nsds_flags' with the following bit coding:
| Bit Position | Description |
|---|---|
| Bit 0 | The computed value for NSDS is NAN or is Infinite |
| Bit 1 | The computed value for NSDS is less than -1 (minus one) |
| Bit 2 | The computed value for NSDS is greater than 1 (one) |