SERVER ALGORITHMS FOR IMPROVING SPACE-BASED AUTHENTICATION

摘要

PROBLEM TO BE SOLVED: To provide an authentication system that enables location authentication for client devices located in low signal-to-noise-ratio (SNR) environments such as indoors and downtown.;SOLUTION: A system and methods for location authentication are provided. An estimated server signal is estimated based on a generated known code signal, and a client-received coded satellite signal 138 is received from a client device 108. The client-received coded satellite signal is compared with an estimated server unknown low-rate code signal to provide a comparison result.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT