Method for determining the position and / or speed of an object in road traffic

The method uses a radar unit with irregularly arranged antenna elements and non-uniform Fourier transform to address the challenge of reducing antenna elements in radar systems, achieving reliable object recognition and safety improvements in autonomous driving.

JP2026519527APending Publication Date: 2026-06-16FTES AG
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
FTES AG
Filing Date
2024-05-15
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Radar systems for autonomous driving require a large aperture to achieve high angular resolution, leading to a challenge in reducing the number of antenna elements while maintaining effective object recognition in road traffic scenarios.

Method used

A method utilizing a radar unit with antenna elements arranged in an irregular pattern and applying a non-uniform Fourier transform to determine the position and speed of objects, reducing the number of elements through sparse array design and employing a non-uniform Fourier transform to evaluate reflected signals.

Benefits of technology

Enables reliable object recognition in road traffic with fewer antenna elements, improving driving safety by accurately determining the position, direction, and speed of objects, thereby enhancing driver assistance systems.

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Abstract

The present invention relates to a method, particularly a computer implementation method, for determining the position, direction and / or distance, and / or speed of an object (1) in road traffic using a vehicle radar unit (2). In this method, an antenna unit (3) having a plurality of antenna elements (4-10) arranged in an irregular pattern is used. A transmission signal (11) is transmitted by the irregularly arranged antenna elements (4-10), and a reflected signal (12) is detected by the irregularly arranged antenna elements (4-10). Furthermore, the position and / or speed of the object (1) is measured by evaluating the detected reflected signal (12) using a non-uniform Fourier transform. This non-uniform Fourier transform can evaluate the signal detected by the irregularly arranged antenna elements (4-10), particularly the reflected signal (12).
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