vulcan::ConstantOmegaRotation Struct Reference

#include <EarthModel.hpp>

Inheritance diagram for vulcan::ConstantOmegaRotation:

Collaboration diagram for vulcan::ConstantOmegaRotation:

Public Member Functions
constexpr	ConstantOmegaRotation (double omega_, double theta0_=0.0)
double	gmst (double t_seconds) const override
Public Member Functions inherited from vulcan::EarthRotationModel
virtual	~EarthRotationModel ()=default
virtual double	ecef_to_eci_angle (double t_seconds) const

Static Public Member Functions
static constexpr ConstantOmegaRotation	from_wgs84 (double theta0=0.0)
	Create rotation model using WGS84 angular velocity.
static constexpr ConstantOmegaRotation	from_model (const EarthModel &model, double theta0=0.0)
	Create rotation model using specified Earth model.

Public Attributes
double	omega
	Angular velocity [rad/s].
double	theta0
	Initial angle at t=0 [rad].

Detailed Description

Simple Earth rotation model with constant angular velocity

Suitable for short-duration simulations where precession/nutation can be neglected. Accuracy: ~arcseconds over hours, arcminutes over days.

θ(t) = θ₀ + ω·t

Example:

auto rotation = ConstantOmegaRotation::from_wgs84();
double angle = rotation.gmst(3600.0);  // Angle after 1 hour

Constructor & Destructor Documentation

ConstantOmegaRotation()

vulcan::ConstantOmegaRotation::ConstantOmegaRotation ( double omega_, double theta0_ = 0.0 )

inlineconstexpr

Member Function Documentation

from_model()

constexpr ConstantOmegaRotation vulcan::ConstantOmegaRotation::from_model ( const EarthModel & model, double theta0 = 0.0 )

inlinestaticconstexpr

Create rotation model using specified Earth model.

from_wgs84()

constexpr ConstantOmegaRotation vulcan::ConstantOmegaRotation::from_wgs84 ( double theta0 = 0.0 )

inlinestaticconstexpr

Create rotation model using WGS84 angular velocity.

gmst()

double vulcan::ConstantOmegaRotation::gmst ( double t_seconds ) const

inlinenodiscardoverridevirtual

Greenwich Mean Sidereal Time (or equivalent rotation angle) at time t

Parameters

t_seconds

Seconds since reference epoch (typically J2000.0)

Returns

Rotation angle from ECEF to ECI [rad]

Implements vulcan::EarthRotationModel.

Member Data Documentation

omega

double vulcan::ConstantOmegaRotation::omega

Angular velocity [rad/s].

theta0

double vulcan::ConstantOmegaRotation::theta0

Initial angle at t=0 [rad].

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

• include/vulcan/coordinates/EarthModel.hpp