Celestial NAV
=============

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`Celestial-NAV` is a pure rust library that aims at providing celestial navigation by means
of stars image analysis. It is intended for work in close relationship with a navigation framework, 
an IMU sensor and a camera sensor.

## no-std

The library works without `std`. The idea is to augment a navigation framework
on an embedded platform.

## Input

`Celestial-NAV` works from two inputs:

- a frame picture of (X, Y) dimensions
- the rover attitude (or state vector)
- both need to be regularly updated

## Core algorithm

`Celestial-NAV` extracts the star `(x, y)` coordinates in the camera frame
and project them into 3D.


## Dependencies

`Celestial-nav` depends on the following key elements:

- `geo` for 2D coordinates
- `nalgebra`: solver
- `hifitime`: timing