compute_Sv

echopype.calibrate.compute_Svechodata: EchoData**kwargsDataset

Compute volume backscattering strength (Sv) from raw data.

The calibration routine varies depending on the sonar type. Currently this operation is supported for the following sonar_model: EK60, AZFP, EK80 (see Notes below for detail).

ParametersReturns
Notes

The EK80 echosounder can be configured to transmit either broadband (waveform_mode="BB") or narrowband (waveform_mode="CW") signals. When transmitting in broadband mode, the returned echoes are encoded as complex samples (encode_mode="complex"). When transmitting in narrowband mode, the returned echoes can be encoded either as complex samples (encode_mode="complex") or as power/angle combinations (encode_mode="power") in a format similar to those recorded by EK60 echosounders.

The current calibration implemented for EK80 broadband complex data uses band-integrated Sv with the gain computed at the center frequency of the transmit signal.

The returned xr.Dataset will contain the variable water_level from the EchoData object provided, if it exists. If water_level is not returned, it must be set using EchoData.update_platform().