mrtk_peph.h File Reference

MRTKLIB Precise Ephemeris Module — Earth rotation parameter types and ERP I/O functions. More...

#include "mrtklib/mrtk_foundation.h"
#include "mrtklib/mrtk_time.h"

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Classes
struct	erpd_t
	ERP (earth rotation parameter) data type. More...
struct	erp_t
	ERP (earth rotation parameter) type. More...

Functions
int	readerp (const char *file, erp_t *erp)
	Read earth rotation parameters from IGS ERP file (ver.2).
int	geterp (const erp_t *erp, gtime_t time, double *erpv)
	Get earth rotation parameter values at specified time.

Detailed Description

MRTKLIB Precise Ephemeris Module — Earth rotation parameter types and ERP I/O functions.

This header provides the ERP (Earth Rotation Parameter) data types and the associated I/O and interpolation functions extracted from rtkcmn.c.

Note

Precise ephemeris types (peph_t, pclk_t) and functions that depend on nav_t remain in rtklib.h / preceph.c to avoid MAXSAT and nav_t dependencies in the mrtklib layer.

All functions in this module are pure cut-and-paste extractions from rtkcmn.c with zero algorithmic changes.

Definition in file mrtk_peph.h.

Function Documentation

geterp()

int geterp	(	const erp_t *	erp,
		gtime_t	time,
		double *	erpv )

Get earth rotation parameter values at specified time.

Parameters

[in]	erp	Earth rotation parameters
[in]	time	Time (GPST)
[out]	erpv	ERP values {xp,yp,ut1_utc,lod} (rad,rad,s,s/d)

Returns

Status (1:ok, 0:error)

Definition at line 146 of file mrtk_peph.c.

References erp_t::data, epoch2time(), gpst2utc(), erpd_t::lod, erpd_t::mjd, erp_t::n, timediff(), trace(), erpd_t::ut1_utc, erpd_t::xp, erpd_t::xpr, erpd_t::yp, and erpd_t::ypr.

Referenced by clas_osr_zdres(), and tidedisp().

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readerp()

int readerp	(	const char *	file,
		erp_t *	erp )

Read earth rotation parameters from IGS ERP file (ver.2).

Parameters

[in]	file	IGS ERP file path
[out]	erp	Earth rotation parameters

Returns

Status (1:ok, 0:file open error)

Definition at line 99 of file mrtk_peph.c.

References AS2R, erp_t::data, free, erpd_t::lod, erpd_t::mjd, erp_t::n, erp_t::nmax, trace(), erpd_t::ut1_utc, erpd_t::xp, erpd_t::xpr, erpd_t::yp, and erpd_t::ypr.

Referenced by execses().

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