Sv to TS and TS to Sv

The Sv to TS operator applies the following function:

The TS to Sv operator applies the following function:

Where:

Sv is the Volume backscattering strength (dB re 1m-1)

r is the range from transducer (m)

c is the Sound speed (m/s) value entered on the Calibration Page of the Variable Properties dialog box for the virtual variable

t is the Transmitted pulse length (s) entered on the Calibration Page of the Variable Properties dialog box for the virtual variable

y is the Equivalent Two-way beam angle (Steradians)

Echoview calculates y as 10(Y/10), where:

Y is the Two-way beam angle (dB re 1 Steradian) (on the Calibration Page of the Variable Properties dialog box for the virtual variable)

C is Calibration offset (dB) entered on the Calibration Page of the Variable Properties dialog box for the virtual variable, see Choosing a calibration offset for more information

Note: These two operators are not perfectly reversible, the Calibration offset is added in each case i.e. if you convert Sv to TS and back to Sv again, you will have identical Sv echograms only if the calibration offsets are mirrored correctly.

Sv to TS and TS to Sv

See also