| BRBA Algorithm Specification | |
The BRBA operator algorithm computes the Band
Ratio for Built-up Area
from a given product.
The BRBA results from the following equation:
BRBA = R / S1
, where:
The bands are:
- R is the Red band
- S1 is the SWIR 1 band
Also the processor computes an additional flags band called 'brba_flags' with the following bit coding:
| Bit Position | Description |
|---|---|
| Bit 0 | The computed value for BRBA is NAN or is Infinite |
| Bit 1 | The computed value for BRBA is less than -1 (minus one) |
| Bit 2 | The computed value for BRBA is greater than 1 (one) |