    The return signal is read by the receive antenna.  At this
    point some simple analog processing is done and the signal is
    digitized at a resolution of 6 GHz, and sent to a PC.

    The PC correlates the data into a conventional waveform, does
    some processing, then transmits the data over an ethernet
    cable to a Pentium workstation (not shown).

    The Pentium workstation is used to apply different digital
    filters, combine waveforms, and display the results.  This
    system can be used to demonstrate detection of small targets
    buried in sand, people behind walls, and other targets.

    Patriot has used its antenna system to demonstrate detection
    of objects as small as a coke can buried in sand, through a
    wall. Even small targets disturb the wavefront of the pulse,
    producing reflections and modifing the field in measurable
    ways.

    Patriot will be testing this technology for suitability for
    mine detection. We will be acquiring sample casings and
    running further tests.

                                 -105-