Testing

Automotive Radar Testing

Radar is described as the ability to identify radio waves to determine the range, angle and relative velocity of objects. In modern vehicle safety systems, radar is used in conjunction with cameras, ultrasound and other sensors to obtain information about the environment of a vehicle. The goal is an improved object identification, which should lead to a simplified decision making for the driver.

There are three main types of radar technology used, which differ mainly in distance of the measurement range:

  • “short range radar” (SRR): a maximum measurement range of up to approx. 30 m
  • “mid-range radar” (MRR): a maximum measurement range of up to approx. 150 m
  • “long range radar” (LRR): a maximum measurement range of up to approx. 250 m

 

Use cases for automotive

With an increasing degree of automation, the number of radar sensors required in a vehicle increases significantly for reasons of redundancy and measurement accuracy. These include services such as distance warning systems, blind spot detection, stop-and-go functionality, automatic speed regulation and lane departure warning systems. These applications use different frequency ranges:

Frequency range Use cases (examples) Classification
24.05 GHz – 24.25 GHz Distance warning MRR
Blind-spot detection, lane change assistance, rear cross traffic alert, precrash rear, exit assistance MRR
24.25 GHz – 26.65 GHz (UWB)* Stop-and-Go system SRR
Blind-spot detection, lane change assistance, rear cross traffic alert, precrash rear, exit assistance SRR
76 GHz – 77 GHz Adaptive cruise control LRR
Front cross traffic alert MRR
Blind-spot detection, lane change assistance, rear cross traffic alert, precrash rear, exit assistance MRR
77 GHz – 81 GHz Not fully regulated yet.

* phased out by 2022

 

Regulations

For most countries, the scheme is divided in the two frequency bands 76 – 77 GHz and 77 – 81 GHz.

  • For 76 GHz – 77 GHz, the technical requirements for acceptance are basically homogeneous.
  • For 77 – 81 GHz, many countries do not yet have a regulation.

Exception: In 2017, the FCC homogenized the frequency regulation for both areas and is therefore one step ahead of many countries.

It should also be mentioned that the regulation for the frequency range 24.25 GHz to 26.65 GHz expires in 2022. The regulation for the band 24.05 GHz – 24.25 GHz, on the other hand, is already almost completely homogenized.

 

Our services

In our accredited laboratories, we offer test services for automotive radar technology and test the following contents, among others, in accordance with the specified specifications:

  • Operating Frequency Range / Occupied bandwidth
  • Mean Power
  • Peak Power
  • Unwanted emissions in the out‑of‑band domain
  • Unwanted emissions in the spurious domain
  • Receiver spurious emissions
  • Receiver in-band, out-of-band and remote-band signal handling
  • Frequency stability

Our test reports are recognized worldwide and can be used for marketing approval in Europe, USA, Canada and Japan. However, our service portfolio is not limited to the above country requirements. Our testing services in our ISO 17025 accredited laboratories include regulatory radar testing for a variety of international certification schemes based on various test specifications and standards.

If you have any questions about radar testing or require further information, please do not hesitate to contact us directly: https://www.cetecom.com/en/contact/