Viewing profile — kyzyl

UBC does, or at least did, implement it across many of their physics and math courses. I'm not personally aware of on-going discussions, but there are many faculty members there an…

https://rpy2.readthedocs.io/en/latest/

It's true that the laser frequency is sweeping, but it very well may not be over the same band. The sweep bandwidth in a typical lidar is likely in the 1-10GHz range. The carrier f…

Yeah, it definitely can be shorter than 100ms. See my sibling comment. It just depends on the type of radar being used and the target range/velocity. Certainly for shortish range t…

It depends entirely on what configuration of RADAR you've got, and what you're pointing it at. You can build a system that will result in returns with beat frequencies of just abou…

So your're correct that there is a Fourier Transform analogy for the uncertainty principle, but in the context of FMCW lidars (which brought up the question of velocity vs position…

It really depends on the type of RADAR being used. If it's an FMCW radar, typically you will get a beat signal whose frequency corresponds to the target range. That frequency will …

Actually most pulsed lidar systems use pretty high peak powers, which result in an eye-safe average power only because they are on for a sequence of very short pulses (~1ns). It's …

I suppose it will be a good while before we can approach an empirical proof for this sort of thing, since FMCW lidars are still very scarce, even more so than pulsed lidars right n…

Sorry I didn't see your responses until now. Indeed, there are many ways to slice the specific problem. I was specifically responding to the parent's statement: > It would be a gam…

The tools to do this exist. It's usually called 'blind source separation', as in "What are the N distinct audio signals which sum up to best explain a given compound signal, withou…

I find it odd to state that ASC's lidars work, and just cost too much until there is sufficient volume, but then turn around and say that the pulsed lidar groups with working produ…

You think that Zhang odometry paper is good, you should see the stuff his grad student came up with for his thesis[0]. The results look almost as good as the figures from the Ouste…

Amusingly, the question of "where to set the threshold" is actually a problem for pulsed lidar in general. What constitutes the pulse returning, and how do you know which pulse is …

If you're talking about how the human eye perceives light or dark objects, then yes it can be more complicated. Especially when colour is involved. That said, what they're talking …

The problem with Musk's argument is that there isn't any indication so far that the machine learning has tricks up its sleeve that are sufficient resolve all of the ambiguous situa…

Amusingly, Xilinx makes dev tools that are so unbelievably bad that it's almost impossible to do any of the best practices for development that you would hope for in safety critica…

Heh, or perhaps we could say that it's simply a short hand colloquialism for "on the order of 10 years"? ;-) As somebody with physics and engineering degrees, as well as 20 years o…

In principle it can be done, of course, but it wouldn't be economical. The abrasive sludge that accumulates in the bottom of the machine is full of large and small bits of various …

I opened this thread in the morning, got to that '100 page' remark and belly laughed. Then my day took over, and I just refreshed and saw your comment, and belly laughed again. I'd…

The comparison to breaking out the PCB software is a touch misleading. You'd certainly also find it to be an onerous task to break out the PCB software and design a board for the S…

Also more possible haha. It's all fun and games until you predicate the success of your project on trying to collimate a laser beam from here to alpha centauri, so that it can manu…

> Sky's the limit. Until you get a bigger antenna ;-)

This really strongly depends on your industry/focus, and what your end goal is. Some industries are completely dominated (library/community wise) by one or the other. I used to do …

Yeah the real reason you never get guides to this stuff is that when it comes down to making a successful prototype, what makes it good vs. just barely work or not work at all is s…