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Wireless bistatic link intrusion detection system

  • US 5,376,922 A
  • Filed: 11/02/1992
  • Issued: 12/27/1994
  • Est. Priority Date: 09/26/1990
  • Status: Expired due to Term
First Claim
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1. An intrusion detection system comprising:

  • a plurality of microwave links, each of said links is defined by an operationally coupled microwave transmitter and microwave receiver, deployed to define a detection boundary;

    said microwave transmitter being operable in accordance with defined transmitter operating parameters, said transmitter operating parameters include at least one of transmitter frequency and power output, and including an antenna for transmitting a microwave carrier signal and a status encoder for applying status information to said carrier signal representative of the operational status of said transmitter;

    said microwave receiver being operable in accordance with defined receiver operating parameters, said receiver operating parameters include at least one of receiver frequency, filter function and power output, and including an antenna oriented to receive said microwave carrier signal from the transmitter operationally coupled thereto, a processor for producing an alarm output responsive to an intrusion across the link associated with said receiver and a status decoder for producing a status output representative of the operational status of the transmitter operationally coupled thereto;

    central station means located remote from said microwave receiver and in wireless communication therewith for receiving information therefrom representative of said alarm output, said status output, and s communication error rate across said link;

    said central station means including processor means responsive to said received information for remotely adjusting said operating parameters of said microwave transmitter and said microwave receiver;

    said central station means including means for displaying the alarm outputs produced for each link.

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