ionoBSplines.cpp File Reference

Data Structures
struct	BspBasis

Functions
int	configIonModelBsplin (Trace &trace)
	Initializes grid map model The following configursation parameters are used.
bool	ippCheckBsplin (GTime time, VectorPos &Ion_pp)
	checks if the Ionosphere Piercing Point falls in area of coverage time: I time of observations (not used) IPP: I Ionospheric piercing point to be updated
double	ionCoefBsplin (Trace &trace, int ind, IonoObs &obs, bool slant)
	Evaluates B-splines basis functions int ind I Basis function number meas I Ionosphere measurement struct latIPP - Latitude of Ionosphere Piercing Point lonIPP - Longitude of Ionosphere Piercing Point angIPP - Angular gain for Ionosphere Piercing Point bool slant I state to delay gain; false: state to VTEC gain.
double	ionVtecBsplin (Trace &trace, GTime time, VectorPos &ionPP, int layer, double &var, KFState &kfState)
	Estimate Ionosphere VTEC using Ionospheric gridmaps Ion_pp I Ionosphere Piercing Point layer I Layer number vari O variance of VTEC returns: VETC at piercing point.

Function Documentation

configIonModelBsplin()

int configIonModelBsplin

(

Trace &

trace

)

Initializes grid map model The following configursation parameters are used.

• acsConfig.ionFilterOpts.lat_center: latitude of map centre
• acsConfig.ionFilterOpts.lon_center: longitude of map centre
• acsConfig.ionFilterOpts.lat_width: latitude width of maps
• acsConfig.ionFilterOpts.lon_width: longitude width of maps
• acsConfig.ionFilterOpts.lat_res: latitude resolution of gridmap
• acsConfig.ionFilterOpts.lon_res: longitude resolution of gridmap

- acsConfig.ionFilterOpts.layer_heights: Ionosphere layer Heights

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ionCoefBsplin()

double ionCoefBsplin	(	Trace &	trace,
		int	ind,
		IonoObs &	obs,
		bool	slant )

Evaluates B-splines basis functions int ind I Basis function number meas I Ionosphere measurement struct latIPP - Latitude of Ionosphere Piercing Point lonIPP - Longitude of Ionosphere Piercing Point angIPP - Angular gain for Ionosphere Piercing Point bool slant I state to delay gain; false: state to VTEC gain.

BSPLINE_LATINT and BSPLINE_LONINT needs to be set before calling this function

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ionVtecBsplin()

double ionVtecBsplin	(	Trace &	trace,
		GTime	time,
		VectorPos &	ionPP,
		int	layer,
		double &	var,
		KFState &	kfState )

Estimate Ionosphere VTEC using Ionospheric gridmaps Ion_pp I Ionosphere Piercing Point layer I Layer number vari O variance of VTEC returns: VETC at piercing point.

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ippCheckBsplin()

bool ippCheckBsplin	(	GTime	time,
		VectorPos &	Ion_pp )

checks if the Ionosphere Piercing Point falls in area of coverage time: I time of observations (not used) IPP: I Ionospheric piercing point to be updated

returns 1 if the IPP is within the area of coverage

Author: Ken Harima @ RMIT 04 August 2020

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