Invading object detecting and positioning system based on wireless local area network signals

The invention relates to an invading object detecting and positioning system based on wireless local area network signals, and belongs to the technical field of invading object detecting and positioning and security and protection. The system comprises a WIFI signal sending device, a WIFI signal receiving device and a WIFI signal analysis device; a plurality of WIFI signal transmitting devices andWIFI signal receiving devices are arranged in an area needing to be monitored and used for transmitting and receiving WIFI signals and transmitting the received WIFI signals to a WIFI signal analysisdevice; according to the system, a WIFI signal analysis device is used for analyzing a WIFI signal received by a WIFI signal receiving device; the position information of a transmitting end and a receiving end can be determined by using the WIFI signal of which the signal intensity change is greater than a threshold value, a straight line where the invaded object is located is determined, and theposition of the invaded ob