Skip to main content

transform_state

satkit::frametransform

Function transform_state 

Source 
pub fn transform_state<T: TimeLike>(
    from: Frame,
    to: Frame,
    t: &T,
    pos: &Vector3,
    vel: &Vector3,
) -> Result<(Vector3, Vector3)>
Expand description

State (position + velocity) transform from from to to at time t.

Uses the full IERS 2010 reduction. Properly handles the Earth-rotation sweep term ω⊕ × r when transitioning between rotating (Frame::ITRF, Frame::TIRS) and inertial (Frame::GCRF, Frame::EME2000, Frame::ICRF, Frame::CIRS, Frame::TEME) frames. ITRF↔TIRS is treated as a static rotation — polar motion contributes ~1 mm/s at LEO altitudes and is neglected here, matching the existing itrf_to_gcrf_state convention.

Orbit-dependent frames (Frame::LVLH, Frame::RTN, Frame::NTW) require orbit state to define their axes and are not handled here — use to_gcrf / from_gcrf for those.