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The extension of on-board data processing capabilities is an attractiveoption to reduce telemetry for scientific instruments on deep space missions.The challenges that this presents, however, require a comprehensive softwaresystem, which operates on the limited resources a data processing unit in spaceallows. We implemented such a system for the Polarimetric and HelioseismicImager (PHI) on-board the Solar Orbiter (SO) spacecraft. It ensures autonomousoperation to handle long command-response times, easy changing of the processesafter new lessons have been learned and meticulous book-keeping of alloperations to ensure scientific accuracy. This contribution presents therequirements and main aspects of the software implementation, followed by anexample of a task implemented in the software frame, and results from runningit on SO/PHI. The presented example shows that the different parts of thesoftware framework work well together, and that the system processes data as weexpect. The flexibility of the framework makes it possible to use it as abaseline for future applications with similar needs and limitations as SO/PHI.

Autonomous on-board data processing and instrument calibration software for the SO/PHI