The Defense Advanced Research Projects Agency's Integrated Sensor is Structure program, ISIS for short, will provide a detailed, real-time picture of all movement on or above the battlefield, explained program manager Timothy Clark.
As envisioned, the ISIS airship will be able to track troop movements – friendly as well as enemy – up to 180 miles away and track the most advanced cruise missiles from about 370 miles away.
It also will be able to watch ground targets through heavily forested areas, a capability not possible without the huge ultra-high-frequency antenna ISIS will provide.
Operating outside of controlled air space and out of the range of most surface-to-air missiles, Clark said, the system will bring a capability not possible with satellites: the ability to maintain watch over a huge, fixed position without blinking.