Instrusion detection system
First Claim
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1. A system for detecting the presence of a moving target within a detection zone comprising:
- a transmission line for RF energy, the transmission line including means for radiating RF energy travelling through the transmission line into the detection zone and for receiving reflected energy returning from the detection zone;
a transmitter adapted to supply pulses of RF energy into one end of said line; and
a receiver including range gate means for receiving and range gating RF energy from the other end of said line to produce a range gated signal, and doppler detection means for producing a detection signal indicative of the presence of doppler components in the range gated signal.
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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.
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Citations
6 Claims
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1. A system for detecting the presence of a moving target within a detection zone comprising:
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a transmission line for RF energy, the transmission line including means for radiating RF energy travelling through the transmission line into the detection zone and for receiving reflected energy returning from the detection zone; a transmitter adapted to supply pulses of RF energy into one end of said line; and a receiver including range gate means for receiving and range gating RF energy from the other end of said line to produce a range gated signal, and doppler detection means for producing a detection signal indicative of the presence of doppler components in the range gated signal. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification