Physical protection weakness analysis method based on three-dimensional scene

The invention discloses a physical protection weakness analysis method based on a three-dimensional scene. The method comprises the following steps: constructing a three-dimensional weakness evaluation scene of a physical protection system; setting invasion conditions of potential enemies; establishing a search map; defining defense node parameters and initializing the defense node parameters; selecting any defense node from the defense hierarchy as a detection node; calculating to obtain a first action path from the detection node to the intrusion target by taking the intrusion target as a target; taking the first defense level as a starting point, and calculating to obtain a second action path from the starting point to the detection node; judging whether the detection node is a criticaldetection point or not, if so, forming a weak intrusion path passing through the detection node by the first action path and the second action path, and calculating the interception probability of the weak intrusion path, ot