Method and device for tracking positioning signal in common-band positioning system

The invention provides a method and device for tracking a positioning signal in a common-band positioning system, and the method comprises the steps: a TC-OFDM (Time Division-Code Division Multiplexing) base station broadcasts a common-band positioning signal in which the positioning signal is embedded in the background noise of a communication signal to a terminal; after entering the 5G coverage range, the TC-OFDM positioning terminal performs time-frequency synchronization with the TC-OFDM base station in the 5G coverage range; a TC-OFDM positioning terminal analyzes configuration information of a TC-OFDM base station by receiving broadcast information of the TC-OFDM base station, and determines configuration parameters of a time division duplex (TDD) mode; and the TC-OFDM positioning terminal transmits the configuration parameters of the TDD mode to a common-band logic processing unit in the TC-OFDM positioning terminal, and the common-band logic processing unit carries out capturing and tracking processin