US 2025/0130328 A1Published application

Detection of objects with a synthetic antenna

OwnerYann LE GALL, Andreas ARNOLD +2inventors

InventorsYann LE GALL, Andreas ARNOLD, Mathieu SIMON, Nicolas BURLET

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Abstract

A computer-implemented method includes receiving a series of measurements of distances generated, from a plurality of different positions each time, by a detection system operating by: transmitting a wave; receiving waves reflected by the environment; determining the distances by calculating differences between the wave transmission time and the time of reception of the reflected waves; generating, based on the series of distance measurements, a synthetic image representing the distances from the environment relative to a reference position; for each focal distance of a plurality of focal distances: generating, from the series of distance measurements or the synthetic image, a synthetic image that is focused at the focal distance, by applying compensation for penumbra effects; and detecting the presence of an object in the focused synthetic image.

Claims15

Dependent claims

A computer-implemented method for detecting objects subject to penumbra effects, the method comprising:

receiving a series of distance measurements generated, from a plurality of respectively different positions, by a sonar detection system comprising a synthetic antenna, the detection system operating by:
emitting a wave;
receiving waves reflected by the environment;
determining distances by computing differences between the time of emission of the wave and the times of reception of the reflected waves;
generating, based on said series of distance measurements, a synthetic image using said synthetic antenna, the synthetic image representing the distances of the environment from a reference position;
for each focusing distance of a plurality of focusing distances:
generating, based on said series of distance measurements or said synthetic image, a synthetic image focused at said focusing distance by applying penumbra effect compensation;
detecting the presence of an object in said focused synthetic image.

5 more elements

Dependencies are inferred from the claim text.