The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2025
Filed:
Oct. 21, 2021
Atlantic Inertial Systems Limited, Plymouth, GB;
Andrew Price, Plympton, GB;
Geoffrey Henderson, Yelverton, GB;
ATLANTIC INERTIAL SYSTEMS LIMITED, Plymouth, GB;
Abstract
A terrain referenced navigation system includes a one sensor arranged to measure the elevation of terrain below a current position of the navigation system, a terrain elevation map comprising a plurality of map posts that each comprise terrain elevation data, and a land-water detection unit arranged to calculate a proportion of land and/or water of at least a portion of the terrain elevation map based on the terrain elevation data of said portion of said terrain elevation map. The land-water detection unit provides the ability to estimate a proportion of land and/or water of the terrain elevation map, using the terrain elevation data stored therein. The land-water detection unit allows the navigation system to detect areas of the map that contain transitions between land and water, and compensate accordingly when passing over these areas.