Aerostat Surveillance:
Tethered Aerostat Radar System

Aerostats are large helium filled fabric envelopes, which can rise up to an altitude of 15,000 feet (4,600 m) while tethered by a cable. The largest lifts a 1000 kg payload to an operating altitude providing low-level, downward-looking radar coverage. The aerostat consists of four major parts or assemblies: the hull and fin, windscreen and radar platform, airborne power generator, and rigging and tether.

ETI's systems are in use supporting this program with ground based electronics for the monitoring and maintenance, including examples below: