What is the meaning of sigma in L5?

[Yli.9]

 

Hi,

I saw in a video (See the screenshot above) that the distance of target is extracted by assuming a normal distribution, and for L5 sensor, we can get sigma (See the second screenshot above).

My question is, do the received range sigma means the sigma of that normal distribution?

[John E KVAM · Accepted solution]

The sigma is an indication of how well the photons are grouped. A nice flat target will return a small sigma. A complex target (possibly 2 objects closer than 60cm apart but both in the Field of View) will return a large sigma. It's basically a warning that the scene is not a flat wall here, but a more complex shape.

And yes, it's very similar to the statistical sigma.

[Yli.9]

Thanks.