公开(公告)号：US20230393283A1

公开(公告)日：2023-12-07

申请号：US18033058

申请日：2021-10-05

Applicant: THALES

Inventor： Jean-Pierre ARETHENS ,  Warody LOMBARDI ,  Vincent CHOPARD

IPC: G01S19/07 ,  G08G5/00

CPC classification number: G01S19/071 ,  G08G5/0091

Abstract: A position of an aircraft is computed, associated with the radius of a sphere centered around the estimated position of the aircraft and within which the actual position of the aircraft is located with a probability equal to or greater than a predefined threshold. For this purpose, the computation is based on distances from radio transmitters each having a fixed position in a geographical reference frame. The positions of the radio transmitters are converted into a terrestrial reference system, before solving a system of equations linking, in the terrestrial reference system, the position of the aircraft and the positions of the radio transmitters. After solving the system of equations, the position of the aircraft is converted from the terrestrial reference system into the geographical reference frame.