POSITION INFORMATION AUTHENTICATION SYSTEM, POSITIONING TERMINAL, AND POSITION INFORMATION ACQUISITION APPARATUS

摘要

Provided are: a position information authentication system (1) provided with a positioning terminal (200), an authentication center device (100), and a position information acquisition device (300, 300A); a positioning terminal (200); and a position information acquisition device (300, 300A). The authentication center device (100) is provided with a center-side satellite reception unit (110), a center-side authentication data creation unit (122), and an authentication data transmission unit (130). The positioning terminal (200) is provided with a terminal-side satellite reception unit (230), a key reception unit (211), a terminal-side authentication data creation unit (S54), an authentication determination unit (S56 to S60), an authentication completion message creation unit (S6 to S10), and a terminal-side transmission unit (212). The position information acquisition device (300, 300A) is provided with a terminal data acquisition unit (S70, S112), a key acquisition unit (S74, S96), a comparison data creation unit (S78, S100, S102), and a terminal determination unit (S80 to S84, S114 to S120).