The whole reason radar was invented was to be able to see in and through low or zero visibility conditions. Radar can see through fog just fine, certainly well enough to avoid hitting that stopped car you didn’t see.
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Tesla Radar Speculation
- Thread starter Takaa
- Start date
No. Radar cannot see. It is OK for aircrafts as they do not have painted skylanes.
Tam
Well-Known Member
Cheap obsolete radar is programmed to ignore stationary obstacles.
New 4d imaging radar now can avoid stationary obstacle collisions.
diplomat33
Average guy who loves autonomous vehicles
I don't think any AV would be expected to drive in a sand storm since humans are not expected to drive in a sand storm. I doubt any sensor would work in a sand storm. Lidar won't see as well in fog. Radar is unaffected by fog.
But remember that no sensor is perfect. Cameras are great at classifying objects, reading road signs and traffic lights. But camera vision does not have 100% recall and can be unreliable at measuring position and velocity. Cameras might also struggle in low light conditions. Lidar is very effective at measuring position and velocity. Lidar has 100% recall. Lidar works great even in zero light conditions. And lidar can also create a very accurate 3d map of everything. But both cameras and lidar can struggle in rain, snow and fog. Radar is unaffected by rain, snow and fog and is very effective at measuring position and velocity in all conditions. But radar cannot read traffic lights or road signs. That is why AVs have multiple sensors, cameras, radar and lidar. Each sensor can compensate for the weaknesses of the other sensors.
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diplomat33
Average guy who loves autonomous vehicles
This is not true. Lidar can see the road just fine. In fact, lidar can create a very accurate 3D map of a road. it sees the surface of the road, the road edges and lane lines. It does not need "electromagnetic trackers" installed on the road. I don't even know what that means.
Bottom view is camera vision. Top view is the lidar point cloud.
Arbe stock (+50% today) has been on a rocket since the FCC prematurely released and subsequently redacted the Tesla Radar images, and GreenTheOnly shared that "Phoenix" is still being referenced in the code.
90 day avg of ~40k shares, and almost 40 million shares changed hands today... 65 million shares total outstanding shares for the company... either its a big rumor mill, or someone knows something
90 day avg of ~40k shares, and almost 40 million shares changed hands today... 65 million shares total outstanding shares for the company... either its a big rumor mill, or someone knows something
DanCar
Active Member
I don't like people being argumentative about terms used like "see".
Lots of different terms in the dictionary: look, behold, perceive, observe, discern, understand, know, etc...
DanCar
Active Member
Sorry, then I missed your point. Can you inform the unknowing what "we all know what we are talking about"?
Radar is not supposed to “see“ the road. It’s supposed to “see” objects in front of you, and determine their distance. Your position seemed to be that radar/LIDAR/etc. would be useless in low visibility situations because they couldn’t “see the road”. I was pointing out that radar can be very useful in low visibility situations.
That's about what I'd expect from HD radar today - nothing new. Based purely on that marketing video, you could argue that regulators should require every vehicle being produced today to have that radar installed - it would eliminate accidents and save 42,000 lives a year. No brainer decision.
diplomat33
Average guy who loves autonomous vehicles
Since you all are talking about what radar can do, you might be interested in Mobileye's 4D imaging radar. It can distinguish between two close objects, detect road edges, detect static objects, does not cause false positives from manhole cover, can map driveable space and more.
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