What is the error if my Single target detection results are affected?

What is the error if my Sv data are affected?

A Microsoft Excel file that models TVG range correction is available for download.

The spreadsheet has been set up so that you can enter values to model your own TS and/or Sv data.

The graphs on the TVG range correction TS and TVG range correction Sv pages show how the error varies with range.

The file has four pages.

Excel page

Description

TVG range correction TS

The TVG range correction TS page displays:

  • the variables used to calculate the TS TVG range correction.
  • graphs that illustrate the error in TS and % error in density.

Yellow highlighted cells indicate Name+ values that you can change. These values affect calculations on the:

  • TVG range correction TS page
  • TVG range correction Sv page
  • Data page

The graphs on the TVG range correction TS page display:

  • TS to subtract if you used Method 1 and want to use Method 2 versus Range
  • % Error in initial density versus Range

Refer to the Definitions page for descriptions and derivations of all variables and equations and density cases.

TVG range correction Sv

The TVG range correction Sv page displays:

  • the variables used to calculate the Sv TVG range correction.
  • graphs that illustrate the error in Sv and % error in density.

You can model your data on the TVG range correction TS page. Entered values will affect the calculations on the:

  • TVG range correction TS page
  • TVG range correction Sv page
  • Data page

The graphs on the TVG range correction Sv page display:

  • Sv to subtract when you used no range correction but would like to use range correction
  • % Error in initial density versus Range

Refer to the Definitions page for descriptions and derivations of all variables and equations.

Definitions

The Definitions page contains:

  • Variable definitions.
  • A list of Names+ used in the Excel file.
  • Expressions for volumetric fish density, and % density difference.
  • Expressions for Density Case 2, Density Case 3 and their conditions.

Data

The Data page contains calculations for the graphs on the TVG range correction TS and TVG range correction Sv pages.

+ Definition from Microsoft Excel Help. "Name: A word or string of characters that represents a cell, range of cells, formula, or constant value..."

Return to TVG range correction overview

See also

About time varied gain