Accession Number:



Delayed Authentication System for Civilian Satellite Navigation Receivers with Currently Existing Signals

Descriptive Note:

[Technical Report, Master's Thesis]

Corporate Author:

Air Force Institute of Technology

Personal Author(s):

Report Date:


Pagination or Media Count:



This thesis presents the feasibility of a Delayed Authentication System DAS for civilian satellite navigation satnav receivers. In satnav systems, encrypted signal components are transmitted synchronously with civilian components. Hence, the civilian signals can be authenticated by detecting the presence of encrypted signal components within the received signal. To authenticate, a reference station transmits estimated encrypted signal spreading code symbols processed using a high gain antenna. In this thesis, it is shown that a 1-meter diameter dish antenna is adequate to provide a high probability of successful authentication, thereby reducing overall system complexity and cost.

Subject Categories:

  • Space Navigation and Guidance

Distribution Statement:

[A, Approved For Public Release]