| 摘要 |
A space required to locate a leakage coaxial transmission path so as to suppress false detection is reduced, and a target range where the intrusion detecting system is available is enlarged. An intrusion detecting system in which a transmitter leakage transmission path that transmits a detection signal for detecting an intrusion and a receiver leakage transmission path that receives the detection signal leaked from the transmitter leakage transmission path are installed apart from each other within an intrusion monitor area, and an intrusion detecting device detects presence or absence of an intrusion object in the intrusion monitor area on the basis of a change in the detection signal received by the receiver leakage transmission path, wherein at least one of the transmitter leakage transmission path and the receiver leakage transmission path is a surface wave leakage coaxial transmission path.
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