tessem.h File Reference

This file contains functions that are adapted from TESSEM code which is used to calculate surface emissivity. More...

#include <fstream>
#include "matpackI.h"

Go to the source code of this file.

Classes
struct	TessemNN

Functions
void	tessem_read_ascii (std::ifstream &is, TessemNN &net)
void	tessem_prop_nn (VectorView &ny, const TessemNN &net, ConstVectorView nx)

Detailed Description

This file contains functions that are adapted from TESSEM code which is used to calculate surface emissivity.

Definition in file tessem.h.

Function Documentation

tessem_prop_nn()

void tessem_prop_nn	(	VectorView &	ny,
		const TessemNN &	net,
		ConstVectorView	nx
	)

Tessem emissivity calculation

When using the default neural network parameter files from the Tessem 2 distribution, the input Vector should contain 5 elements:

• Frequency (10e9-700e9) in Hz
• Theta (0-90) Incidence angle in degrees
• Windspeed (0-25) at 10m in m/s. Higher wind speed can be used but without garantee
• Surface skin temperature (270-310) in K
• Salinity (0.0-0.04) in kg/kg

Parameters

[out]	ny	Calculated emissivity.
[in]	net	Neural network parameters.
[in]	nx	Input data.

Definition at line 87 of file tessem.cc.

References TessemNN::nb_inputs, TessemNN::nb_outputs, ConstVectorView::nelem(), and _CS_basic_sstream_base< _CS_cT, _CS_Tr, _CS_Al >::str().

Referenced by surfaceTessem(), and TestTessem().

tessem_read_ascii()

void tessem_read_ascii	(	std::ifstream &	is,
		TessemNN &	net
	)

Read TESSEM2 neural network parameters

Parameters

[in,out]	is	Input file stream
[out]	net	Neural network parameters

Definition at line 41 of file tessem.cc.

References TessemNN::b1, TessemNN::b2, i, TessemNN::nb_cache, TessemNN::nb_inputs, TessemNN::nb_outputs, Vector::resize(), Matrix::resize(), TessemNN::w1, TessemNN::w2, TessemNN::x_max, TessemNN::x_min, TessemNN::y_max, and TessemNN::y_min.

Referenced by TessemNNReadAscii().