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by DoctorOetker 2773 days ago
the article is a bit light on real details, but all the affordable LIDAR technology I have seen used Linear-Feedback Shift Registers, such that different devices operating at the same frequency are still on different channels.

It's unclear if this product works in the time-domain or in the frequency domain...

2 comments

> light on real details

If you want more details, Image Sensors World [1] has coverage with more details and links to two patents.

> It's unclear if this product works in the time-domain

It is a pulsed time of flight direct detection lidar, not a modulated continuous wave lidar.

[1] http://image-sensors-world.blogspot.com/2018/11/ouster-discu...

thanks, that is helpful!
Shorter range lidars (<10m) tend to work in the frequency domain because you can get pretty good ranging accuracy.

Longer range lidars work in the time domain. The SPAD detectors used by Ouster create a pulse when a single photon is detected and so you're measuring the time of flight of the photon being emitted by the vscel and then being detected by the SPAD array.