Desert Test

The aim of the Desert Test is to reject false alarms in Fire Radiative Power (FRP) processing.

Spatial boundaries between hotter and cooler surfaces can pose problems, since the pixels on the hotter side of the boundary can sometimes be excluded from the background window tests, leading to cooler background window statistics and the possibility that the hotter land surface pixels may be falsely identified as fire pixels. The test included in this section rejects such pixels.

Previously computed statistics from S7 and S8 signals are compared to specific thresholds. If all the tests are satisfied, the fire pixel is rejected as a false alarm caused by a hot desert boundary. This test is only applied to the land surface geographic area.