GBA is the new “Geographical Biomass Analyzer” developed by iXblue. This functionality is unique in commercial fishery activities.
Every single acoustic detection of a fish target logs its geographical position. Fish echoes come from all SeapiX swaths in action, providing several thousand detections of fish on shoal or scattered fishes.

GBA is a statistical processing tool, able to compute fish echo distribution from an entire water volume.
These volumetric distribution histogram calculations can be described according to several filtering criteria, such as minimum & maximum acoustic response levels, or minimum and maximum depth of the studied water layer, and according to the selected geographic area or according to the history of fish detections.

Biomass can be extracted, analyzed and displayed in 2D and 3D views by selecting fish from any echogram views or from 2D biomass mapping views.
SeapiX’ GBA functions gather a huge quantity of single fish detections and process them in real-time.

When the operator selects a shoal, the histogram shows the spread in various acoustic responses for each fish category or species.

At any time, the skipper can save the acoustic response - according to filtering criteria - of a shoal or fish as a “class” in the GBA database. He will subsequently be able to recall it in order to extract and filter the desired class.

The distribution of classes is automatically computed by the SeapiX GBA. This ratio in % shows the observed relative % of each class in the biomass database.
The ratio % computed by SeapiX is the percentage of each class in the selected Ecosystem, according to the biomass selection (from the Echogram or from the 2D area frame) and the water layer selected.

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