Method for Calibrating at Least One Signal Parameter And/or System Parameter of a Wave-Based Measurement System

Simple SummaryContent extracted from patent full text and abstract with AI.

The patent describes an improved method for calibrating signal and system parameters of wave-based measurement systems, particularly radar systems. The novel aspect is to use multiple coherent measurements of a sparse object scene, taken at different, known relative positions between the receiver(s) and the objects. By coherently processing this set of measurements, the system can achieve precise calibration without requiring controlled test environments or exact knowledge of object positions, thereby simplifying and improving the calibration process.

Use CasesContent extracted from patent full text and abstract with AI.

• Automotive radar systems calibration for driver-assist and autonomous vehicles.
• Calibration of radar or wave-based sensors in drones, airplanes, or ships.
• Industrial process control where wave-based sensors (e.g., radar, sonar, ultrasonic) are used for monitoring or imaging.
• Updating and maintaining calibration of sensors in fleet vehicles without removing them from service.
• Calibration of radar imaging systems in security, surveillance, or mapping applications.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides high-precision calibration without the need for large, controlled environments like anechoic chambers.
• Enables calibration even when precise positions of the calibration targets are unknown.
• Supports online (field) calibration, allowing systems to self-calibrate during regular operation or driving, reducing downtime.
• Improves reliability and accuracy of measurement systems such as automotive radar, benefiting safety and performance.
• Reduces equipment needs and operational costs for calibration by leveraging coherent measurements at known relative positions.
• Adapts to systems with multiple receivers or transmitter/receiver units, improving flexibility in system design and deployment.

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Patent Abstract

The invention relates to a method for calibrating at least one signal parameter and/or system parameter of a wave-based measurement system, in particular a radar measurement system. At least one receiving unit for receiving signals and recording an object scene assume a plurality of spatial positions relative to one another, a relative positioning of the plurality of positions to one another being known or determined, and the signals in this plurality of positions being detected coherently by the at least one receiving unit, with a set of a plurality of coherent measurement signals being formed.