ultrasonic sensor

You would need cancel the noise, with another sensor that picks the noise up. Use a negative feedback to cancel the noise, in your case turbulence.

Sort of like stereo photography gives you that 3 d effect..

hananl wrote:

Distance measurement. Environment - sensor will suffer from harsh vibrations on the surface where it is standing. target is moving in low velocity (40km/hour) 15 meters away and need to be detected. lots of air turbulance. perhaps high humidy, perhaps rainy. (system suppose to work all year).

I would strongly recomend using a laser range finder instead. It will cope in all of the conditions stated above.

Brendan

finder instead. It will

RF is probably your best bet. Rain and wind will cause noise issues even at ultrasonic freqs, will they not?

Bottom of what? It's an Original Post. ;-)

Yeah, I want to know these things also. I'm thinking Polaroid sensors, like that guy used on the Gossamer Albatross - that was probably fairly turbulent!

For just pinging, I'd think OP could just sync the xmitter with the receiver - at least tune the receiver(s)!

Cheers! Rich

Sounds like you need to talk to the battle-bot people. :-) Or whatever outfit it was that had that robot car race not too long ago. There might already be something like this, for the military, but if so, it'd be "burn before reading" classified. =:-O

Good Luck! Rich