US 11,852,494 B2
Restoring navigational performance for a navigational system
Stefan Alexander Schwindt, Cheltenham (GB)
Assigned to GE Aviation Systems Limited, Cheltenham (GB)
Filed by GE Aviation Systems Limited, Cheltenham (GB)
Filed on Dec. 1, 2022, as Appl. No. 18/073,050.
Application 18/073,050 is a continuation of application No. 16/737,381, filed on Jan. 8, 2020, granted, now 11,530,926.
Claims priority of application No. 19151355 (EP), filed on Jan. 11, 2019.
Prior Publication US 2023/0106207 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01C 21/34 (2006.01); G01S 19/21 (2010.01); G01S 19/49 (2010.01); G01C 21/16 (2006.01)
CPC G01C 21/3415 (2013.01) [G01C 21/165 (2013.01); G01S 19/215 (2013.01); G01S 19/49 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable medium storing a restoration for a navigational performance program for a moving vehicle that causes a computer to:
receive by a first navigational system and a second inertial navigational system (INS), each located within the vehicle, a collection of data points to establish a real-time navigational route for the moving vehicle;
determine, by the computer, a drift range between a planned navigational route and the real-time navigational route by comparing the collection of data points to the planned navigational route;
determine, by the computer, that the drift range is greater than a predetermined error range;
disable, by the computer, the first navigational system;
determine, by the computer, a last known location based on the collection of data points; and
establish, by the computer, a new navigational route based on the last known location using the INS.