Stelion Systems develops precision celestial navigation sensors for military aircraft, naval vessels, ground vehicles and unmanned platforms, delivering resilient positioning, heading and orientation capabilities in GNSS-denied environments.
Defense Advancement (DA) is pleased to announce the addition of Stelion Systems to our global supplier ecosystem. Their new supplier profile showcases an innovative range of celestial navigation sensors designed to provide independent positioning and orientation information for military and defense platforms operating in GNSS-denied and degraded environments.
Drawing on proven sun sensor and star tracker technology developed for space missions, Stelion Systems combines optical observations of the Sun and stars with inertial measurements and advanced processing. The company’s passive sensing technology provides an alternative or complementary navigation source when satellite signals are unavailable, jammed or spoofed, helping defense OEMs and system integrators enhance navigation resilience without relying on transmitted RF signals.
Key products and capabilities from Stelion Systems include:
- STELION Geolocation (STELION-SGS): A compact optical sensor providing autonomous nighttime geolocation and orientation, with positioning accuracy of less than 500 m depending on the INS, and a low-SWaP design weighing under 360 g.
- STELION Heading (STELION-SHS): A precision celestial heading and orientation sensor operating during both day and night, delivering yaw accuracy down to 0.1° without relying on magnetic references.
- STELION Navigation (STELION-SNS): An integrated optical navigation sensor combining heading, geolocation and orientation measurements, offering 0.1° heading accuracy and complementary positioning data for contested environments.
- GNSS-Independent Navigation: Passive celestial sensing that provides independent navigation references, supporting resilience against satellite signal interference, jamming and spoofing.
- Seamless Platform Integration: Compact, low-power sensors designed to complement existing GNSS and inertial navigation systems across military aircraft, UAVs, naval vessels, USVs and autonomous ground vehicles.
Designed for integration into existing defense navigation architectures, Stelion’s modular sensor solutions enable military platforms to maintain access to critical positioning and orientation information when conventional navigation sources are compromised. Their compact footprints, low power requirements and plug-and-play capabilities make them particularly suited to SWaP-constrained and unmanned systems operating in challenging environments.
To learn more about how Stelion Systems is advancing resilient positioning and navigation for defense applications, visit their full profile on Defense Advancement: https://www.defenseadvancement.com/company/stelion-systems/




