empiryczna normalizacja wzmocnienia (ang. EGN) poprzez uśrednienie sumy amplitud wszystkich impulsów dźwiękowych

impuls dźwiękowy = ping

cccccc
EGN is a function that sums and averages up all of the sonar amplitudes in all pings in a set of sonar files by altitude and range. The amplitude values are summed and averaged by transducer (port and starboard) so there are actually two tables. A given sonar amplitude sample is placed in a grid location based on the geometry of a ping. On the x-axis of the grid is range. On the y-axis of the grid is altitude. The resulting table is used to work out the beam pattern of a sonar by empirically looking at millions of samples of data.

https://chesapeaketech.com/wp-content/uploads/docs/SonarWiz ...