PPRuNe Forums - View Single Post - US Navy’s new unhackable GPS alternative.
Old 5th May 2021, 18:59
  #13 (permalink)  
Less Hair
 
Join Date: Feb 2010
Posts: 1,075
Received 66 Likes on 40 Posts
It is using stars. Celestial navigation. Data fed into the aircraft nav system. The SR-71 was meant to be used for Post-SIOP reconnaissance when no working satellite or nav-emitter would exist anymore.
Less Hair is online now