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Radar Simulation & Test
Radar Systems are an essential part of most autonomous systems engineers are building today. They leverage radio frequency (RF) signal generation and those generated signals bouncing of real-world objects help the control logic to determine object position in space and finally help humans make better decisions driving in an assistant role or feed the data into algorithms that can derive decisions from the object data.
The AD (Autonomous Driving) concept of the vehicle manufacturer will usually impact how many radars will be installed in the car. The quantity depends heavily on the AD level that is planned to be achieved. The higher the AD level the more radars will be needed.
Vehicle Manufacturers (OEMs) as well as Automotive suppliers (Tier 1s) are now facing the challenge to validate, test and produce all the radar systems that will finally be deployed in the new generation of vehicles. Since the radar systems are very complex the test systems need to be highly customized.
Changes and test requirements during the V&V (Validation and Verification) often occur, where upgrades or downgrades are needed. Konrad Technologies understands the test systems must be flexible and modular to easily adapt to evolving requirements.
At present the following radar types are heavily adopted:
Short Range Radar (SRR)
Mid Range Radar (MRR)
Far Range Radar (FRR)
For major ADAS applications such as AEB, ACC, and FCW, which directly control the vehicle's engine, steering, or brakes, radar systems predominantly operate within the 76-81 GHz radar band. The bandwidth ranges from sub-1 GHz up to 4 GHz, depending on the antenna design and specific use case. This necessitates employing an exceptionally advanced approach to test these systems and ensure the requested specifications can be validated.
Together with its partner NI, Konrad Technologies (KT) developed a wide range of radar test systems based on the modular PXI (PCI eXtensions for Instrumentation). These systems, along with KT's internal RF expertise and technology, help solve these critical challenges.
Collaboration & Integration
Working together with our global customer base we successfully integrated multiple radar test systems and enabled our customers to test, validate and successfully produce radars that are incorporated in many vehicles driving on the roads today. We can build entry level validation systems with one angle of arrival up to complex systems with multiple angles of arrival replicating more complex traffic situations that may be interesting for object detection-based tests.
Below we want to present to you a few options for radar validation test and if you are facing the same challenge to test complex radar systems, we invite you to contact us with specific requirements, so that we can propose a suitable solution for your individual circumstances.
The single-angle radar OTA simulator consists of an Anechoic Chamber to ensure a stable measurement environment, a turntable that enable us to move the radar under test, a vehicle radar target simulator from NI and software.
The radar under test will be placed in the chamber at the antenna boresight direction to the simulator and will be able to capture the simulated RF signals by the system. This enables the engineer to compare simulated data with output data and execute a wide range of RF as well as object detection related tests.
Complex Radar Over-the-Air (OTA) Systems
In order to execute complex traffic simulations, we have developed a multi-angle radar OTA simulator. It also features an anechoic chamber to ensure a stable measurement environment, motion systems that enable us to move the simulated objects and multiple vehicle radar target simulators from NI and software. All our simulation systems can be connected to a HIL system in case a complete loop test is needed.
Every radar possesses a distinct RF design comprising the antenna, filters and mixers. To ensure high-quality testing of this component, it usually necessitates a bespoke RF test system tailored to match the specifications of the radar being tested.
Konrad Technologies (KT) boasts an in-house RF development team capable of envisioning, developing, and manufacturing such systems, collaborating closely with our customers' R&D team.
Radar Data Injection Test
This is the standard test which is done across the industry from vehicles manufacturers to automotive suppliers, also called injection-based test.
We are taking a reference object data stream from a simulation system or a real recording and inject the signal into the radar system and measure the output to validate if the ECU processed the information correctly.
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