Positioning method and system based on WR and radio frequency fingerprint technology, and monitoring method

The invention provides a positioning method and system and a monitoring method based on WR and radio frequency fingerprint technologies. The method comprises the steps that a server is connected with a synchronization device, and a plurality of radio frequency signal receivers are connected with the synchronization device; after the radio frequency signal receiver captures a radio frequency signal, the radio frequency signal is transmitted to the server through the synchronization equipment; the server extracts a transient signal according to the radio frequency signal, and obtains a transient feature corresponding to the transient signal and the time difference of arrival of the signal received by each receiver; the server searches a radio frequency fingerprint database according to the transient characteristics and judges whether radio frequency fingerprints matched with the transient characteristics exist or not: if yes, determining a radio frequency tag according to the radio frequency fingerprint, and ca