WISDOM (Wise Integration of Satellites PNT tracking Data using OWL for collision avoidance Management) is an ESA NAVISP-supported project that develops and demonstrates technologies for autonomous satellite collision avoidance. The mission will be carried out with a 6U CubeSat that separates into two 3U CubeSats, each equipped with GNSS and the OWL (Orbital Whereabout Locator) system for positioning, tracking, inter-satellite communication, and manoeuvring. By enabling satellites to proactively manage collision avoidance without human intervention, WISDOM enhances space traffic management and mitigates the growing risks posed by increasing orbital congestion.

The in-orbit demonstration will showcase several use cases, including safe separation using the HDRM (Hold Down Release Mechanism), integration of PNT capabilities, inter-satellite data exchange over distances up to 4,000 km, and coordinated manoeuvring managed by the IPC (Intelligent Payload Controller). One CubeSat carries mini-thrusters, while the other is equipped with a Plasma Brake, allowing safe deorbiting within two years.

Throughout the mission, WISDOM will validate practical collision avoidance scenarios and provide a proven, easy-to-integrate subsystem and service that future satellite manufacturers can rely on to plan safer missions with established heritage.

The consortium involves C3S LLC, a CubeSat platform provider, and Aurora Propulsion Technologies Oy, specialists in thrusters and plasma brakes for deorbiting. The Plasma Brake system, adapted for CubeSats, is currently at TRL6 and targets spacecraft in the 2–1,000 kg range. The satellite is expected to launch not earlier than November 2025.

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