A set of seismic detectors is distributed throughout a defense zone in communication
with a set of attack or other controllable devices. A seismic signal source controlled
by a zone defense coordinator communicates at scheduled times to the seismic detectors
and through them to the associated devices to convey mission critical information.
The seismic detectors and the attack devices are controlled singularly and/or collectively
by self-contained processors. The seismic source may be at a fixed site and is
substantially repeatable as well as controllable. The system may be specially adapted
to a wide range of terrains including land and water; and from very shallow to
very deep water. Targets may be characterized in terms of their typical seismic
signatures and the same hardware system used for seismic communication may be also
programmed for target detection and device activation.
