White Paper: Automotive

Automotive Radar Technology and Test Requirements – White Paper

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Radar sensors are increasingly used for advanced driver assistance systems (ADAS). They make it possible to quickly and precisely measure the radial velocity, range, azimuth angle, and ­elevation angle of multiple objects.

Radar sensors are being used for a diverse set of applications at different frequencies. Blind spot detection (BSD) radars operate in the 24.05 GHz to 25.25 GHz range and most other automotive radars operate in the 76 GHz to 81 GHz range.

Advantages of sensors used in the 76 GHz to 81 GHz frequency band are:

  • The sensor packages are smaller
  • Radar chips are less expensive
  • More bandwidth is available (resulting in higher range resolution)
  • Measurements at 77 GHz give better Doppler resolution than at 24 GHz for the same signal transmit duration
  • More antenna space
  • Only automotive radar in the 76 GHz to 81 GHz range can claim protection from interference due to its regulatory status (final acts/outcomes of WRC-2015)

This white paper explains the basics of automotive radar, MIMO radar signal processing, applications, and market trends. Test and measurement requirements for research and development, mandatory ETSI tests, and production verification of automotive radar sensors in the 24 GHz, 77 GHz, and 79 GHz domains are described.

To reduce design uncertainty, test solutions are required that deliver the performance, precision, and insight to solve these advanced design challenges.

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