# Topocentric Coordinates

Functions for working with local topocentric coordinate frames including East-North-Up (ENZ), South-East-Zenith (SEZ), and Azimuth-Elevation-Range.

## ENZ (East-North-Up) Frame

### Rotation Matrices

::: brahe.coordinates.rotation_ellipsoid_to_enz

::: brahe.coordinates.rotation_enz_to_ellipsoid

### Position Conversions

::: brahe.coordinates.relative_position_ecef_to_enz

::: brahe.coordinates.relative_position_enz_to_ecef

::: brahe.coordinates.position_enz_to_azel

## SEZ (South-East-Zenith) Frame

### Rotation Matrices

::: brahe.coordinates.rotation_ellipsoid_to_sez

::: brahe.coordinates.rotation_sez_to_ellipsoid

### Position Conversions

::: brahe.coordinates.relative_position_ecef_to_sez

::: brahe.coordinates.relative_position_sez_to_ecef

::: brahe.coordinates.position_sez_to_azel