Calibration settings for RESON data

This page describes the settings, necessary to an Echoview calculation, on the Calibration page of the Variable Properties dialog box for acoustic variables derived from RESON data files.

We recommend you assess the suitability of the settings available on the Calibration pages for each acoustic variable. Quantitative calculation/analysis requires calibrated data which is achieved using correct calibration setting values (rather than default values). An ECS file enables you to modify calibration settings for variables in a fileset.

Changes in calibration settings used for range calculations may shift ping data in the depth dimension but will not automatically adjust the position of regions and lines. You should review any existing regions and lines to ensure they are still valid. For more information refer to Range calculation effects on regions and lines.

Note: Data file values that have been used since the data was loaded or the ECS file was added, saved or removed are displayed in black text. Default values that have been used are displayed in orange text. Data file or ECS values that have been read but not used are displayed in grey text. Read About calibration settings for further information.

RESON SeaBat 6012 (.sbi)

Magnitude beamformed pings

No calibration settings apply. A transducer can be selected in order to apply transducer geometry to the echogram. The 3dB beam angle setting is not used. Schools variables are not corrected for beam width. There is no correction for beam shape in 3D school detection.

RESON SeaBat 7000 series (.s7k)

Calibration settings are read from the file when they are available. Default settings may include:

Magnitude beamformed ping, Magnitude complex beamformed pings and Phase complex beamformed pings, Magnitude compressed beamformed ping, Magnitude compressed complex beamformed pings and Phase compressed complex beamformed pings

A transducer can be selected in order to apply transducer geometry to the echogram. The 3dB beam angle setting is not used. Schools variables are not corrected for beam width. There is no correction for beam shape in 3D school detection.

Sv complex beamformed pings, Sv compressed complex beamformed pings

A transducer can be selected in order to apply transducer geometry to the echogram. The 3dB beam angle setting is not used. Schools variables are not corrected or beam width. There is no correction for beam shape in 3D school detection.

Echoview uses the signal magnitudes stored in the data files and the Multibeam magnitudes to Sv algorithm to derive the Sv complex beamformed pings variable. This variable can utilize calibration settings for each beam (BeamOffsets) or apply a value that will be applied to all beams (CalibrationOffset). These settings can be set with an ECS file which must be added to a fileset.

Notes:

When specifying per-beam calibration, it is good practice to verify the settings for the correct number of beams
Prior to Echoview 5 this format used the (deprecated) Echoview ASCII calibration file to specify per-beam calibration values

RESON SeaBat 8000 series snapshot (.sns/.raw)

Magnitude complex beamformed pings and Phase complex beamformed pings

Sv complex beamformed pings

Echoview uses the signal magnitudes stored in the data files and the Multibeam magnitudes to Sv algorithm to derive the Sv complex beamformed pings variable.

Calibration settings for RESON data

RESON SeaBat 6012 (.sbi)

Magnitude beamformed pings

RESON SeaBat 7000 series (.s7k)

Magnitude beamformed ping, Magnitude complex beamformed pings and Phase complex beamformed pings, Magnitude compressed beamformed ping, Magnitude compressed complex beamformed pings and Phase compressed complex beamformed pings

Sv complex beamformed pings, Sv compressed complex beamformed pings

SeaBat T20-P (.s7k)

SeaBat T50-R (.s7k)

Norbit (.s7k)

Teledyne Odom (.s7k)

RESON SeaBat 8000 series snapshot (.sns/.raw)

Magnitude complex beamformed pings and Phase complex beamformed pings

Sv complex beamformed pings

See also