NAV::internal Namespace Reference

EGM96 coefficients. More...

Classes
struct	all_t
	All type to request all rows or columns in KeyedMatrices. More...
struct	GPT2Data
	Parameters of the GP2 grid in in 1 degree x 1 degree resolution. More...
struct	GPT3Data
	Parameters of the GP3 grid in in 1 degree x 1 degree resolution. More...
class	KeyedMatrixBase
	Class to inherit common methods for static and dynamic sized matrices. More...
class	KeyedMatrixCols
	Base class for Keyed matrices with multiple columns of static size. More...
class	KeyedMatrixCols< Scalar, ColKeyType, Rows, Eigen::Dynamic >
	Base class for Keyed matrices with multiple columns of dynamic size. More...
class	KeyedMatrixColsBase
	Base class for Keyed matrices with multiple columns. More...
class	KeyedMatrixRows
	Base class for Keyed matrices with multiple rows of static size. More...
class	KeyedMatrixRows< Scalar, RowKeyType, Eigen::Dynamic, Cols >
	Base class for Keyed matrices with multiple rows of dynamic size. More...
class	KeyedMatrixRowsBase
	Base class for Keyed matrices with multiple rows. More...
class	KeyedMatrixStorage
	KeyedMatrix storage class. More...
class	KeyedRowVectorBase
	Class to inherit common methods for static and dynamic sized row vectors. More...
class	KeyedVectorBase
	Class to inherit common methods for static and dynamic sized vectors. More...

Functions
template<typename T>
std::pair< Eigen::MatrixX< T >, Eigen::MatrixX< T > >	associatedLegendre (const T &theta, size_t ndegree=10)
	Calculates the associated Legendre Polynomial coefficients necessary for the EGM96.
Eigen::MatrixXd	readAscii2Matrix ()
	Read function for EGM96 coefficients.

Variables
std::array< std::array< double, 6 >, 65338 >	egm96Coeffs
	EGM96 coefficients.
std::array< GPT2Data, 64800 >	GPT2_grid
	GPT2 grid.
std::array< GPT3Data, 64800 >	GPT3_grid
	GPT3 grid.

Detailed Description

EGM96 coefficients.

Author

M. Maier (maier.nosp@m.@ins.nosp@m..uni-.nosp@m.stut.nosp@m.tgart.nosp@m..de)

T. Topp (topp@.nosp@m.ins..nosp@m.uni-s.nosp@m.tutt.nosp@m.gart..nosp@m.de)

Function Documentation

associatedLegendre()

template<typename T>

std::pair< Eigen::MatrixX< T >, Eigen::MatrixX< T > > NAV::internal::associatedLegendre ( const T & theta, size_t ndegree = 10 )

nodiscard

Calculates the associated Legendre Polynomial coefficients necessary for the EGM96.

Parameters

[in]	theta	Elevation angle (spherical coordinates) [rad]
[in]	ndegree	Degree of associated Legendre polynomials

Returns

Matrix of associated Legendre polynomial coefficients P and its derivative Pd

Note

See 'GUT User Guide' (2018) chapter 4.2, equations (4.2.2), (4.2.3) and (4.2.6)

readAscii2Matrix()

Eigen::MatrixXd NAV::internal::readAscii2Matrix ( )

nodiscard

Read function for EGM96 coefficients.

Returns

'coeffs' MatrixXd of the EGM96 coefficients

Attention

Deprecated: This function is not used anymore, as the coefficients are stored in the source code