INTEGRATED SENSOR IS STRUCTURE (ISIS) AIRSHIP is poised to become the ultimate eye in the sky. If that radar antenna really works, it should be phenominal. Synthetic aperture radar (mapping) might be a little tricky with the airship's slow speed, but with that aperture size, it might not even be necessary.

[Added] This might have been the ISIS prototype airship. If so, there is a bit of work still to be done.