US 12,340,707 B2
Method for validating a terrain database
Vincent Savarit, Toulouse (FR); Stéphane Fleury, Toulouse (FR); and Betty Bastareaud, Toulouse (FR)
Assigned to THALES, Courbevoie (FR)
Filed by THALES, Courbevoie (FR)
Filed on Jun. 24, 2022, as Appl. No. 17/849,298.
Claims priority of application No. 2106731 (FR), filed on Jun. 24, 2021.
Prior Publication US 2023/0026962 A1, Jan. 26, 2023
Int. Cl. G08G 5/74 (2025.01); G08G 5/21 (2025.01); G08G 5/30 (2025.01); G08G 5/55 (2025.01); G08G 5/59 (2025.01); G08G 5/80 (2025.01)
CPC G08G 5/74 (2025.01) [G08G 5/21 (2025.01); G08G 5/30 (2025.01); G08G 5/55 (2025.01); G08G 5/59 (2025.01); G08G 5/80 (2025.01)] 8 Claims
OG exemplary drawing
 
1. A method for validating a terrain database comprising a plurality of items of information on at least one geographical region liable to be flown over by an aircraft, said validating method comprising the following steps implemented by computing means:
extracting from a navigation database departure and arrival procedures associated with the at least one geographical region covered by the terrain database;
generating operational routes based on the extracted departure and arrival procedures to link the end of a departure procedure to the beginning of an arrival procedure;
generating a plurality of scenarios based on the operational routes;
computing by a flight management system a trajectory for each of the plurality of scenarios;
simulating flights for the plurality of trajectories, said flight simulations being speeded up;
determining terrain collision risks by means of an on-ground signaling terrain collision risks system for the speeded-up flight simulations;
determining the origins of terrain collision risks for each determined risk; validating the terrain database if the origin of the terrain collision risk does not originate in the terrain database or correcting the terrain database if the origin of the terrain collision risk originates in the terrain database; and
transmitting the terrain database to a system for signaling terrain collision risks installed on board an aircraft equipped with a flight management system.