Another Question on Noise

Czar Brent
Czar Brent
Joined: 20 Feb 05
Posts: 26
Credit: 860,674
RAC: 0
Topic 192341

Are there other detectors surrounding the detectors. My thought would be that if you surround the detectors with "mini vibration detectors" to pick up the noise from surrounding sources of noise they could be used to cancel out extranious sp? noise by adding them to the crunch data. If mini detectors were arranged in triangular formations(in sets) around the main detector, their signals could form a cancellation signal, provided to the main data. Since they were in a triangular fasion we would know the frequency, power, and source at any given time/point. Then move the detector arms underground and "shave" the ground above of weeds to reduce wind noise. Or are the detectors too sensitive for this to help?

WARNING! DiHydrogen MonOxide kills!

Mike Hewson
Mike Hewson
Moderator
Joined: 1 Dec 05
Posts: 6,027
Credit: 104,512,928
RAC: 68,308

Another Question on Noise

Quote:
Are there other detectors surrounding the detectors. My thought would be that if you surround the detectors with "mini vibration detectors" to pick up the noise from surrounding sources of noise they could be used to cancel out extranious sp? noise by adding them to the crunch data. If mini detectors were arranged in triangular formations(in sets) around the main detector, their signals could form a cancellation signal, provided to the main data. Since they were in a triangular fasion we would know the frequency, power, and source at any given time/point. Then move the detector arms underground and "shave" the ground above of weeds to reduce wind noise. Or are the detectors too sensitive for this to help?


I think what you are referring to is managed by the Hydraulic External Pre-Isolators ( HEPI ) systems. Each group of these has movement sensors linked to dampers which negate the movement. They are placed, in the mechanical sense, between the ground/floor and the instrument etc mountings. See here for more....

Cheers, Mike.

( edit ) From memory, the movement suppression is about a factor of a million!!

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.