13 ms·
One thing LIDAR doesn't provide is immediate knowledge of velocity of a moving obstacle (like other cars). It can be used to infer this (over two or more measur
by cr0sh 10y ago
One thing LIDAR doesn't provide is immediate knowledge of velocity of a moving obstacle (like other cars). It can be used to infer this (over two or more measurements), but it can't get at that information directly.
For that matter, neither can a camera (or multiple cameras), but I just wanted to point it out, because it is something that can be useful to know in self-driving vehicles, and isn't often considered or mentioned.
- 15155 10y agoWhat technology can get that information directly, considering velocity is always denominated by time?
- mstockma 10y agoFMCW LIDAR can capture velocity directly from Doppler Shift analysis.
- blacksmith_tb 10y agoIs there a sensor technology that does this more quickly? My naive understanding was that sonar and radar also infer velocity by comparing multiple passes (and light should be at least as fast as radar, shouldn't it?)
- regularfry 10y agoActive sonar and radar can get motion towards or away from the sensor in a single pass from the Doppler shift of the pulse.