Importance

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Abstract

A method for processing satellite signals to derive a geospatial position, comprising: receiving a plurality of GNSS signals from a plurality of GNSS satellites; capturing a digital image using an imaging device at least partially oriented toward the plurality of GNSS satellites, the digital image comprising a multitude of pixels, a first subset of pixels imaging the sky, and a second subset of pixels imaging obstructions that are at least partly impermissible to GNSS signals and/or have reflective surfaces; determining an orientation of the image; and computing a geospatial position. For each of at least a subset of the plurality of GNSS satellites: extracting signal features from the respective GNSS signal; processing the image to extract image features; combining the extracted signal features and the extracted image features to receive a feature combination; and deriving a signal classification and/or an estimated local error of the respective GNSS signal.

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First Claim