A community hub for interoperability testing of independent implementations of CCSDS standards.
This repository collects links, test resources and interoperability information for prototypes and open implementations of CCSDS standards.
The goal is simple:
Implement independently. Test together. Improve the standards.
Implementers are encouraged to use this repository to find other implementations, exchange test vectors, perform cross-implementation testing, and openly discuss implementation challenges.
Implementations known to have participated in community interoperability testing are listed below.
| CCSDS Standard / Protocol | Implementation | Language / Platform | Interoperability |
|---|---|---|---|
| LunaNet LSIS-AFS* | LunaLink | C++20 / Python | ✅ Tested with independent implementations |
| CCSDS xxx.x | https://github.com/ | Language | Status |
| CCSDS xxx.x | https://github.com/ | Language | Status |
*LSIS-AFS is a candidate protocol for a new CCSDS blue book.
luar-space/lunalink is an open-source reference implementation of the LunaNet Signal-In-Space Recommended Standard for the Augmented Forward Signal (LSIS-AFS V1.0).
LunaLink was the winner of the first ESA CCSDS Protocol Implementation Competition and provides test vectors and interoperability facilities for cross-checking independent implementations.
Implementers of CCSDS standards are strongly encouraged to raise public GitHub Issues when they encounter implementation challenges, including ambiguities, different possible interpretations, interoperability problems, missing implementation guidance or other practical issues with a standard.
The community is invited to discuss these issues openly and, where possible, develop and document common solutions.
The resulting implementation experience and community consensus can then be fed back into the CCSDS standardisation process, helping to clarify and improve the standards and, where appropriate, informing future updates of the corresponding CCSDS books.
In this way, community prototyping provides a practical feedback loop:
Standard → Implementation → Interoperability testing → Community feedback → Standard improvement
Community contributions may include:
- links to CCSDS protocol implementations;
- shared test vectors and reference datasets;
- interoperability test procedures and results;
- implementation challenges and proposed solutions;
- validation and comparison tools; and
- lessons learned that may improve future CCSDS book updates.
The emphasis is on independent implementations. The aim is not to create one reference code base, but to demonstrate that different implementations of the same standard work together.
The first community prototyping activity was the ESA CCSDS Protocol Implementation Competition, organised with ESA, CCSDS, Goonhilly Earth Station, AMSAT-UK and AMSAT-DL.
It provided an initial opportunity for the community to develop open implementations and collaborate on testing. This repository builds on that experience as a persistent home for CCSDS community prototyping and interoperability activities.
Implemented a CCSDS standard? Found an implementation challenge? Tested two independent implementations against each other?
Please contribute.
- Open an Issue to discuss implementation challenges, ambiguities or interoperability findings.
- Open a Pull Request to add an implementation, test vectors, tools or interoperability results.
Projects do not need to originate from a particular competition or activity. Contributions from the wider CCSDS implementation community are welcome.
This is a community prototyping and interoperability-testing resource. Inclusion of an implementation, discussion or proposed solution does not constitute CCSDS or ESA certification, qualification or endorsement.
The applicable official CCSDS publications remain the authoritative specifications.