Zoom in and find where heading is stable (in our case it is after 2021-8-16 14:30) , the same holds for end

Cut for the time range

QC procedure

  1. start with percentage of good solutions for 3 and 4 bins (>50%)
  2. continue with correlation (bin3 or bin4 > 110)
  3. amplitude of the signal (detect surface)

Percentage of good 3 & 4 bin solution mask

Bin correlation mask

Echo intensity (amplitude) mask

Velocity limits mask