Method and device for self-calibration of a radar sensor arrangement

US6975265B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Michael Schlick · Remchingen, DE
• Juergen Hoetzel · Florstadt, DE
• Rainer Moritz · Echterdingen, DE
• Berndhard Lucas · Besigheim, DE
• Tore Toennesen · Reutlingen, DE
• Hermann Winner · Bietigheim, DE
• Werner Uhler · Bruchsal, DE
• Dirk Schmidt · Königstein, DE

Key dates

• Filing date: Mar 6, 2002
• Grant date: Dec 13, 2005
• Expiry date: Apr 18, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/4082
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and an apparatus for operating a radar sensor system with a number of adjacent individual sensors (3, 4, 5, 6), extensively synchronized with one another, for determining the position of a target object (15) are proposed. In one measurement cycle, the transit time of the radar signal emitted from one individual sensor and reflected by the target object to this individual sensor (3, 4, 5, 6) (direct echo (13, 14)) and to a different individual sensor (3, 4, 5, 6) (cross echo (16)) is evaluated. From the evaluation of the direct and cross echoes (13, 14, 16), at least the position of the target object (15) is determined, and a detection quality signal (Q) is ascertained, and once a predetermined amount of the detection quality signal (Q) is reached for a target object (15), a calibration is performed.