FMCW LiDAR vs. ToF LiDAR

What are FMCW and ToF?

  1. Pulsed Time-of-Flight (TOF), often also known as dToF

Applicaiton Comparisons

  1. Better Ambient Light Immunity
  1. FMCW cannot measure lateral velocity simultaneously, in one shot, and has no benefit whatsoever in finding lateral velocity over ToF systems.

References

  1. Aurora Team, “FMCW Lidar: The Self-Driving Game-Changer”, www.medium.com, April 9, 2020
  2. Philip Ross, “Aeva Unveils Lidar on a Chip”, IEEE Spectrum, December 11, 2019.
  3. Timothy Lee, “Two Apple veterans built a new lidar sensor — here’s how it works”, arsTECHNICA, October 2, 2018.
  4. Jeff Hect, “Lasers for Lidar: FMCW lidar: An alternative for self-driving cars”, LaserFocusWorld, May 31st, 2019.
  5. “Aeva launches ‘4D’ LiDAR on chip for autonomous driving”, www.optics.org, December 16, 2019.
  6. Phillip Sandborn, “FMCW Lidar: Scaling to the Chip-Level and Improving Phase-Noise-Limited Performance”, Electrical Engineering and Computer Sciences, University of California at Berkeley, Technical Report No. UCB/EECS-2019–148, December 1, 2019.
  7. “Technology readiness level”, Wikipedia
  8. A Gschwendtner, W Keicher, “Development of Coherent Laser Radar at Lincoln Laboratory”, MIT Tech journal, Vol 12, #2, 2000.
  9. C. Patel, “Stability of Single Frequency Lasers”, IEEE J Quantum Electronics, v4, 1968.
  10. Voxtel Laser Rangefinders, www.voxtel-inc.com, June 2020
  11. P Suni et al, “Photonic Integrated Circuit FMCW Lidar On A Chip”, 19th Coherent Laser Radar Conference
  12. https://www.novuslight.com/fmcw-the-future-of-lidar_N9691.html
  13. https://www.laserfocusworld.com/home/article/16556322/lasers-for-lidar-fmcw-lidar-an-alternative-for-selfdriving-cars
  14. https://www2.eecs.berkeley.edu/Pubs/TechRpts/2019/EECS-2019-148.pdf

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Marc. Y. , Tech Leader. Focus on new techs such as 4D Sensing, AR, AV/Robot, and AIoT. More at http://4da.tech/

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