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    TWR4.....GROUND [**OR HOME/APT WALL**] PENETRATING RADAR

    THIS IS TEXT EXCERPTED FROM GROUND-PENETRATING RADAR MANUFACTURER
    PATRIOT SCIENTIFIC CORPORATION.  THE PURPOSE OF INCORPORATING THIS
    TEXT IS THAT GROUND-PENETRATING RADAR SYSTEMS OVERCOME THE PARTLY-
    CONDUCTIVE-WALL BARRIER TO PASSIVE MILLIMETER WAVE THRU-WALL RADAR.

    The original link for this text (as of March 22, 2000) is:
    http://www.ptsc.com/radar/index.html

    Patriot Scientific Corporation

    Patriot Scientific Corporation has developed radar
    technologies with a wide range of possible applications.

    This description below will highlight possibilities for use in:

    - Ground Penetrating Radar (GPR)
    - Communications
    - Surveillance
    - Ordnance Detection
    - Stealth Radar

    The Demonstration System:

    ...is a diagram of the demonstration system. A pulse generator
    is used to drive the transmit antenna. The pulse is a positive
    spike going up to 100V then falling back to ground in one and
    a half nanoseconds corresponding to a pulse transmit frequency
    of 750 MHz.
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