Navigation method and device for a vehicle, and associated system, vehicle, computer program and storage medium

EP4587793A1Pending Publication Date: 2025-07-23SAFRAN ELECTRONICS & DEFENSE (FR)
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Patent Information

Application Number
EP2023793415
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-09-13
Filing Date
2023-09-12
Publication Date
2025-07-23

AI Technical Summary

Technical Problem

Existing navigation systems for vehicles, particularly in aircraft, face challenges with drift errors in inertial navigation and reliability issues due to jamming of GPS modules and low maturity of computer vision techniques, leading to inadequate integrity and availability.

Method used

A navigation method and device that combines data from inertial measurement units, satellite positioning modules, and image acquisition systems, using multiple navigation modules and Kalman filters to fuse data from independent sensors, ensuring precise determination of vehicle navigation data and maintaining high integrity even with low-maturity image processing algorithms.

Benefits of technology

The solution provides a higher level of availability and integrity than existing hybrid navigation systems, enabling precise vehicle guidance by compensating for inertial navigation drift and relaxing constraints on image acquisition devices, thus ensuring reliable navigation data even in critical applications.

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Abstract

The present invention relates to a navigation method and device (APP) for a vehicle (AC), and to an associated system (SYS), vehicle, computer program (PROG) and storage medium (MEM). The method comprises steps of: determining (S10), by a first navigation module (LOC_GPS), first navigation data for the vehicle (OUT_LOC_GPS) based on data (OUT_IMU, OUT_GPS) from an inertial measurement unit (IMU) and from a satellite positioning module (GPS); and determining (S20), by a second navigation module (LOC_VISION), second navigation data for the vehicle (OUT_LOC_VIS) based on: data (OUT_IMU, OUT_VIS) from the inertial measurement unit (IMU) and images acquired by the vehicle; and additionally based on data (OUT_GPS, OUT_BARO) from the satellite positioning module (GPS) and / or an altimeter (BARO).
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