Patent ID: 7973712

Claim:
A GPS receiver comprising: an RF reception circuit section that receives a GPS signal; a memory that stores the GPS signal received by the RF reception circuit section; a read position determination section that reads a first GPS signal by reading the first GPS signal from the memory from a first read start position, and reads a second GPS signal that overlaps the first GPS signal by reading the second GPS signal from the memory from a second read start position, and determines a read start position of an acquisition target satellite signal based on a signal strength of the acquisition target satellite signal that is included in each of the first GPS signal and the second GPS signal, the second read start position is obtained by adding a time shorter than an inversion time interval of a navigation message to the first read position; an acquisition section that acquires the acquisition target satellite signal based on the GPS signal read from the memory using the read start position determined by the read position determination section; and a positioning section that performs a positioning process using the acquisition target satellite signal acquired by the acquisition section.