Patents Examined by Donald R. Hayes
  • Instrusion detection system
    Patent number: 4673935
    Abstract: An intrusion detection system that comprises a transmission line for RF energy, a transmitter coupled to one end of the transmission line to supply pulses of RF energy into the line, and a range gated doppler receiver for receiving RF energy from the other end of the transmission line. The receiver includes means for producing a detection signal indicating the presence of doppler components in a range gated portion of the RF energy received from the transmission line.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: June 16, 1987
    Assignee: The Boeing Company
    Inventor: Donald B. Spencer