GPS-DENIED GEOLOCATION
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United States of America Patent
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Issued Date -
Feb 22, 2024
app pub date -
Oct 27, 2023
filing date -
May 15, 2019
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status (Latency Note)
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Abstract
Systems and techniques for navigation in a GPS-denied environment that do not rely on locations of known points. Instead, the operator can measure distance and/or inclination as well as azimuth to arbitrary points on the visual horizon (or sub-horizon) from their location. These observations can then be compared to precomputed distances and inclinations for corresponding azimuths to the visual horizon of a grid of points based on known surface terrain data. The closest grid point to the observer's location obtained in this way can be refined using a model of the surrounding environment, allowing for the operators position to be quickly and accurately determined.
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