Patent ID: 8791857

Claim:
A system for tracking the location of a terminal in an indoor space, the system comprising: a GPS signal receiving antenna for receiving a GPS signal sent from an artificial satellite; a pseudo GPS signal transmitter including the GPS signal receiving antenna, and for generating a pseudo GPS signal based on the GPS signal received by the GPS signal receiving antenna; and a plurality of GPS transmitting antennas for sending the pseudo GPS signal generated by the pseudo GPS signal transmitter to enable the terminal located in the indoor space to track the location, wherein the pseudo GPS signal transmitter comprises: a GPS signal receiving unit that receives the GPS signal received by the GPS signal receiving antenna, extracts a clock signal of the artificial satellite contained in the GPS signal, and outputs the extracted clock signal as a reference GPS signal; a clock synchronization unit that performs clock synchronization with the artificial satellite based on the reference GPS signal output from the GPS signal receiving part; a pseudo GPS signal generating unit that contains identification information of the GPS transmitting antennas, location information of the GPS transmitting antennas, and pseudo GPS signal transmission time information, and generates a pseudo GPS signal; and a signal transmitter that relays the pseudo GPS signal generated by the pseudo GPS signal generating unit to send the same out wherein the pseudo GPS signal transmitter further comprises: a transmission signal control unit that controls the sequence and interval of the pseudo GPS signal to be sent; a signal processing unit that generates a transmission frame to be sent to the GPS transmitting antennas; and an information storage unit that stores identification information of the GPS transmitting antennas and location information of the GPS transmitting antennas.