ParameterLibrary::Species Class Reference

One species of the library.

#include <ParameterLibrary.h>

Public Member Functions
double	SigmaBsPerKg (double meanLengthCm, double frequencykHz) const
double	WeightKg (double lengthCm) const
double	LengthCv () const
	The coefficient of variation of the length spread around the mean.

Friends
class	ParameterLibrary

Member Function Documentation

SigmaBsPerKg()

double ParameterLibrary::Species::SigmaBsPerKg	(	double	meanLengthCm,
		double	frequencykHz
	)		const

The backscattering cross section per kilogram, averaged over the length spread.

The lengths are a normal distribution around meanLengthCm with standard deviation LengthCv() times the mean, sampled at 81 points over plus and minus four standard deviations; sigma_bs and the weight are both averaged over it, and their ratio is returned.

Parameters

meanLengthCm	The mean length, cm.
frequencykHz	The frequency, kHz; must be one the library has data for.

Returns

sigma_bs per kg, m^2/kg.

Exceptions

std::invalid_argument

if the species has no data at frequencykHz, or (a table) when the length spread reaches outside the tabulated lengths.

WeightKg()

double ParameterLibrary::Species::WeightKg

(

double

lengthCm

)

const

The weight of one animal of a given length, W = a L^b.

Parameters

lengthCm

The length, cm.

Returns

The weight, kg.

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The documentation for this class was generated from the following file:

• webfhsim/reloadrepos/fhsim_fishery/src/auv/ParameterLibrary.h