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Industry White Paper

Accelerate Automotive ADAS Validation with Hardware in the Loop

Hardware-in-the-Loop testing bridges the gap between simulation and costly road tests for automotive radar. Learn how the R&S®AREG800A and R&S®QAT100 enable realistic, repeatable closed-loop validation.


October 16, 2026 by Rohde & Schwarz
Topics Covered
Hardware-in-the-Loop Radar Testing Fundamentals
Closed-Loop Validation for ADAS and Automated Driving
Radar Echo Generation and Dynamic Target Simulation
Realistic Driving Scenario Emulation
Open Simulation Interface Integration
Scalable Test Setups with AREG800A and QAT100

Educational Note Overview 

As vehicles integrate more ADAS & Automated Driving (AD) functions, precise radar validation is essential for safety features like AEBSS and SAE Level 2 & 3 automation. Simulation-based testing offers flexibility but lacks real-world accuracy, while road testing is costly and inconsistent. Hardware-in-the-Loop (HIL) solutions bridge this gap, enabling real-time radar sensor evaluation with high repeatability.

Rohde & Schwarz supports this with the R&S®AREG800A radar echo generator and R&S®QAT100 antenna array, simulating dynamic targets in angle, range, velocity, and size, and integrating via Open Simulation Interface (OSI). With cutting-edge radar test solutions, R&S ensures safer, more reliable ADAS/AD systems.

This educational note explores the current state of closed-loop testing for radar-based hardware, focusing on how Hardware-in-the-Loop (HIL) systems enable realistic validation of automotive radar sensors. It highlights key driving scenarios that HIL must address and demonstrates how the R&S®AREG800A radar echo generator and R&S®QAT100 antenna array support closed-loop validation.

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