ProcessEK80¶

class echopype.process.ProcessEK80(file_path='')¶

Bases: echopype.process.processbase.ProcessBase

Class for manipulating EK80 echo data already converted to netCDF.

Attributes Summary

`ch_ids`
`tau_effective`

Methods Summary

`calc_range`([range_bins, path])	Calculates range [m] using parameters stored in the .nc file.
`calc_sample_thickness`([path])	gets sample thickness using parameters stored in the .nc file.
`calc_seawater_absorption`([src, path])	Returns the seawater absorption
`calc_sound_speed`([src])	gets sound speed [m/s] using parameters stored in the .nc file.
`calc_transmit_signal`()	Generate transmit signal as replica for pulse compression.
`calibrate`([mode, save, save_path, save_postfix])	Perform echo-integration to get volume backscattering strength (Sv) or target strength (TS) from EK80 power data.
`calibrate_TS`([save, save_path, save_postfix])	Base method to be overridden for target strength calibration and echo-integration for different sonar models.
`calibrate_cw`([mode, file_path, save, …])	Perform echo-integration to get volume backscattering strength (Sv) from EK80 power data.
`get_pressure`()
`get_salinity`()
`get_temperature`([path])
`pulse_compression`()	Pulse compression using transmit signal as replica.

Attributes Documentation

Methods Documentation

calc_range(range_bins=None, path='')¶: Calculates range [m] using parameters stored in the .nc file. Will use a custom path if one is provided

calc_sample_thickness(path='')¶: gets sample thickness using parameters stored in the .nc file. Will use a custom path if one is provided

calc_seawater_absorption(src='user', path='')¶

Returns the seawater absorption

Parameters

srcstr: ‘file’ will return the seawater absoption recorded in the .nc file ‘user’ will calculate the seawater absorption. Default (Francois and Garrison, 1982).

Returns

calc_sound_speed(src='file')¶: gets sound speed [m/s] using parameters stored in the .nc file. Will use a custom path if one is provided

calc_transmit_signal()¶: Generate transmit signal as replica for pulse compression.

calibrate(mode='Sv', save=False, save_path=None, save_postfix=None)¶

Perform echo-integration to get volume backscattering strength (Sv) or target strength (TS) from EK80 power data.

Parameters

modestr: ‘Sv’ for volume backscattering strength calibration (default) ‘TS’ for target strength calibration
savebool, optional: whether to save calibrated output default to False
save_pathstr: Full filename to save to, overwriting the RAWFILENAME_Sv.nc default
save_postfixstr: Filename postfix, default to ‘_Sv’ or ‘_TS’

calibrate_TS(save=False, save_path=None, save_postfix=None)¶: Base method to be overridden for target strength calibration and echo-integration for different sonar models.

calibrate_cw(mode='Sv', file_path='', save=False, save_path=None, save_postfix=None)¶

Perform echo-integration to get volume backscattering strength (Sv) from EK80 power data.

Parameters

modestr: ‘Sv’ for volume backscattering strength (default) ‘TS’ for target strength
file_pathstr: Path to CW data
savebool, optional: whether to save calibrated Sv output default to False
save_pathstr: Full filename to save to, overwriting the RAWFILENAME_Sv.nc default
save_postfixstr: Filename postfix