| 摘要 |
<p>A method and system for detecting a concealed foreign object carried by a body (P) by collecting radiation (R) from the body (P) indicative of a radiation response of the body (P) to environmental temperature changes which the body (P) is subjected to while entering or emerging from a transient inducing space (TIS) of environmental temperature changes and generating thermal data indicative of the response. The TIS has a volume substantially large relative to that of the body (P) and is configured to enable concentration of a temperature field within the TIS. The TIS may be defined by a gate (21) having at least one of the following configurations: side walls (21A, 21B) at opposite sides of the body path or side walls (21A, 21B) at opposite sides of the body path and an upper wall (21C) above the body path. The gate may be a substantially -shaped gate, -shaped gate, or a carousel gate.</p> |
