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 Kaijo data files.
We recommend you assess the suitability of the settings available on the Calibration pages for each acoustic variable. Some settings will be used to calculate datapoint values or ranges, others may be used during analysis or display of the data. The table below shows which settings are used for calculating datapoint values and ranges, which are used for other calculations and which settings may not be used by the 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.
Note: The (red) default values on the Calibration pages are for illustration purposes only and have not been read from your data file. Read About calibration settings for further information.
When data are logged with Kaijo echosounders, a separate file called a parameter file is generated to correspond with each data file. The settings from the parameter file (or other settings that are correct for the data) must be determined and entered into Echoview.
Note: Kaijo parameter files contain constants for only two of the four data sets that are stored in a data file for the KFC series. These four data sets are referred to as sig1 transceiver (narrow and wide) and sig2 transceiver (narrow and wide). The data may be from 38, 70, 120, or 200 kHz transceivers and you must identify them manually as this information is not stored in the underlying data files.
The following settings are available for Kaijo raw variables:
|
Setting |
Datapoint values |
Range |
|
|
Sv pings |
angular position pings |
All acoustic variables |
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|
P |
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P |
|
P |
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P |
|
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|
P |
|
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|
|
P |
|
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|
|
From data file |
|||
|
Number of datapoints |
|
|
P |
Use Help > Sonar Calculator to use the Sonar calculator to calculate sound speed and absorption coefficient.
About calibration settings
Entering calibration settings
Kaijo data files
Raw variables derived from Kaijo data
Kaijo data to Sv and angular position