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
Low profile lock interface system and method
Method of making non-stainless steels with high strength and high ductility
Slot-type gaming machine with improved cabinet
Actuator assembly
Chaotic cryptography for OFDM based communications systems
Mobile wireless device with multi-band antenna and related methods
Securing mechanisms for partitions, partition systems including same, and related methods
  Randomly Featured Patents
Self-moving device for movable furniture parts
Compressor bypass valve for use in multistage supercharging
Process for producing chlorate and chlorate cell construction
Method of exercising nozzles of an inkjet printer and article
Fault and error detection arrangement
Communication control device having an apparatus for detecting the absence of a control data on a ring communication network
Holder-ring for earphone plug
Method for making electron sensitive negative resist
Tear away top structure for a rectangular paperboard container
Lenticular image display