Method for angle estimation and radar sensor for motor vehicles

US10180494B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Goetz Kuehnle · Hemmingen, DE
• Volker Gross · Ditzingen, DE
• Benedikt Loesch · Stuttgart, DE

Key dates

• Filing date: Jan 21, 2015
• Grant date: Jan 15, 2019
• Expiry date: Nov 10, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S13/34
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for a radar sensor for a motor vehicle, for angle estimation of radar targets based on an antenna diagram that indicates, for various configurations of radar targets, pertinent amplitudes and/or phase correlations between signals which are obtained for the relevant configuration in multiple evaluation channels of the radar sensor, wherein for a single real target, the occurrence of a number n of apparent targets, which are caused by reflection of the signal coming from the real target from elongated objects, is modeled mathematically; a correlation between the location angle of the real target and the location angles of the apparent targets is calculated; and to estimate the location angle of the real target, a multi-target estimate is performed in an n-dimensional search space and the search is limited to a sub-space that is determined by the calculated correlation.