Patent ID: 11948267
Assignee: AIRBUS SAS
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A device for locating a craft, notably an aircraft and/or a spacecraft comprising:
a database including a digital mapping of a terrain,
an acquisition unit configured to acquire a preliminary version of a digital image of said terrain, and
a processing unit configured to:
receive the preliminary version of the digital image from said acquisition unit;
transform the preliminary version of the digital image into an intermediate version of said digital image, wherein said intermediate version corresponds to a projection of said preliminary version onto a plane corresponding to a plane of said digital mapping;
augment and/or invert a contrast of said intermediate version of the digital image to obtain a final version of the digital image, wherein a contrast of the final version of the digital image is increased as compared to the contrast of the intermediate version of the digital image,
retrieve a first format of a digital map from the database,
augment a contrast of the first format of the digital map to form a final format of the digital map, wherein a contrast of the final format is increased as compared to a contrast of the first format of the digital map,

determine a similarity between the final format of the digital map and the final version of the digital image, and
determine a position of said craft based on the similarity of the final format of the digital map and the final version of the digital image.