Corvid QuietNav

A Corvid Stealth Scout keeps a low signature, which means it cannot rely on beacons or radar. QuietNav is the software that makes that possible: it combines star-tracker images, pulsar timing and inertial measurements to estimate position and velocity entirely passively, to within a few kilometres anywhere in the Belt.

Samir Haddad and the autonomy team open-sourced the library in 2186. It is written in a memory-safe systems language, runs on modest flight computers, and uses the Halcyon Open Star Chart as its reference catalogue.

Partners use QuietNav well beyond scouting. Belt mining cooperatives run it as a backup to Ceres Beacon, and several university cubesat teams fly it as their primary navigation stack.

The project is Apache-2.0 licensed. Contributors should start with the simulation harness and reference test vectors; every change must pass the full replay of recorded Corvid flights. To get started, pick up passive star-tracker navigation library, pulsar positioning module and reference test vectors, all published under Apache-2.0, with source and documentation at https://git.halcyon.example/corvid-quietnav. New contributors are paired with a maintainer for their first change, and the project holds a monthly open call where partners, students and Halcyon engineers compare notes. Releases are versioned and archived, so analyses can always be reproduced against the exact data or code they used.