HELEO: The Greek Microsatellite Constellation

Hellenic Earth Large-scale Environment Observation Mission

As a cornerstone of the Greek National Satellite Space Project, the HELEO mission establishes a sovereign, high-performance capability for the country. This constellation of seven microsatellites combines multispectral and hyperspectral imaging with advanced AI to deliver rapid, actionable data. EMTECH’s role is pivotal in bridging the gap between high-level mission requirements and orbital reality.

HELEO combines modern satellite technology, AI-enabled processing, and a robust ground infrastructure to deliver rapid, reliable Earth observation data.

Emtech’s participation ensures that Greece not only benefits from the operational capabilities of the constellation but also strengthens its industrial base, develops specialized expertise, and gains access to critical facilities that can be leveraged for future missions.

Intelligent Autonomy

Emtech introduces disruptive innovation through AI-driven onboard applications. By designing intelligent protocols for change detection and automated vessel identification, we enable “tip-and-cue” operations—where satellites autonomously coordinate to capture higher-resolution imagery. Our contribution ensures the constellation processes intelligence in near real-time via inter-satellite links.

Validated Precision

Leveraging our specialized ADCS Verification Facility, we ensure the sub-degree pointing accuracy required for HELEO’s high-resolution sensors. Utilizing three-axis Helmholtz coils and air-bearing systems, EMTECH validates critical attitude control modes. This expertise, rooted in ESA’s THOR mission, guarantees that the spacecraft’s magnetic signature does not interfere with its control logic.

Institutional Integrity

Beyond software and hardware testing, EMTECH accelerates the program through Model-Based Systems Engineering (MBSE) and Knowledge Transfer. By providing a rigorous V&V framework and Functional Engineering Simulations, we ensure the constellation operates with institutional reliability while maintaining the agility of the New Space era.

The HELEO mission is a collaborative triumph, managed by the European Space Agency (ESA) for the Hellenic Ministry of Digital Governance.

Through a consortium of leading organizations, EMTECH is playing a significant role in both technology development and the strengthening of Greece’s space capabilities. Drawing on extensive experience in ESA missions, the company is contributing to software development, AI application design, systems engineering, and specialist testing.