Electro-optical (EO) imaging
Satellite or sensor imaging in visible and infrared light: the orbital equivalent of a camera.
Electro-optical (EO) imaging collects pictures in visible and infrared light: the most intuitive and widely used form of overhead imagery, and the foundation sensor of most national observation programmes. Its limits are physical: EO sensors cannot see through cloud or darkness, which is why serious programmes pair them with synthetic-aperture radar for all-weather, day-night coverage.
How this plays out in programmes
Electro-optical imaging is usually the foundation sensor of a national observation programme, the most intuitive form of overhead imagery, but Unstrat is candid with buyers about its physical limits: EO cannot see through cloud or darkness. That is why serious programmes pair it with synthetic-aperture radar for all-weather, day-night coverage, and Unstrat structures capability so the two complement each other rather than leaving a gap. The advantage for a defence or critical-infrastructure buyer is a picture that holds up in real conditions, not just clear skies, and that the nation tasks and owns itself. Sourcing from independent manufacturers keeps the collection sovereign and protects the mission from foreign control of tasking. As the accountable single channel, Unstrat integrates the sensors into one coherent programme. Localisation arrangements are scoped per programme, subject to export controls and end-use approvals.