Nostradamus

nostradamus is an open-source framework to simulate and predict satellites states. It operates a from a user scenario (often-times referred to as the "Observer"). The basic workflow is to arm nostradamus from a user GPX track and we will recreate the orbital state that would physically led to each individual states of this track.

The orbital state can be preset from a RINEX file, but the library is powerful enough to be able to arm itself from scratch.

This framework is divided into a library (nostradamus-lib) and a command line application (nostradamus-cli). Currently the framework is limited to text file synthesis, it will not generate a signal snapshot and therefore, is not a constellation simulator as some people would expect.

Contributions

To contribute to either of our project or join our community, you way

• open an Issue on Github.com
• follow our Discussions on Github.com
• join our Discord channel

Citation and referencing

If you need to reference this library, please use the following model:

nav-solutions (2025), nostradamus: orbit determination and simulations (AGPL-3), https://github.com/nav-solutions

API

TODO