Antenna located outside the Soyuz capsule

Antenna located outside the Soyuz capsule. ENEIDE is an experiment, which will apply advanced navigation techniques based on the European Geostationary Navigation Overlay Service (EGNOS). The objective is to measure and verify in Low Earth Orbit, the GPS and EGNOS signals, which will be used in the combined GPS/EGNOS navigation system for spacecraft control and guidance.