Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for improving signal to noise ratio










Image Number 8 for United States Patent #5555530.

A method for improving the signal to noise ratio from a pair of detectors such as geophones which each detect a noisy signal comprising a signal of interest (S) and a noise signal (N), wherein the signal of interest (S) has a different moveout across the pair of detectors from that of the noise signal (N), and the noise signal (N) from a given source is detected at the first detector at a time .DELTA.t before the corresponding noise signal is detected at the second detector, the method comprising delaying the noisy signal (S+N) detected at the first detector by an amount .tau. being greater than the moveout of the signal of interest but not more than .DELTA.t and subtracting the delayed signal from that detected at the second detector by means of an adaptive filter so as to minimize the power in the resultant signal. The signal detected at the first detection and optionally the resultant signal can also be delayed by an amount .tau..sub.2 and the signal detected at the second detector is subtracted from the delayed first detector (and resultant signals) by means of an adaptive filter so as to minimize the power in the final signal, the delay .tau..sub.2 being greater than the moveout of the signal of interest plus the length of the filter but not more than .DELTA.t plus the length of the filter.








 
 
  Recently Added Patents
Organic semiconductor compound, semiconductor device, solar cell and producing method of organic semiconductor compound
Laser marking of a card
Autonomous adaptation of transmit power
Method and system for simulating superimposition of a non-linearly stretchable object upon a base object using representative images
Hybrid fin field-effect transistor structures and related methods
Display screen with graphical user interface
Liquid crystal shutter glasses
  Randomly Featured Patents
Package level ESD protection and method therefor
Faceplate for a dual fan/light controller housing
Biopsy device
Polycrystalline silicon-bonded cubic boron nitride body and method
Gun shooting rest device
Foldable frame improved structure for foldable tabletop or bed
Method to determine predisposition to hypertension
Endothermic blowing agents compositions and applications
Light-sensitive silver halide color photographic materials
Writable tracking cells