Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for cascading sweeps for a seismic vibrator










Image Number 2 for United States Patent #5410517.

A method for cascading or linking seismic vibrator sweeps to form a cascaded sweep sequence. According to the method, a first cascaded sweep sequence is generated containing N sweep segments linked end-to-end. The N sweep segments are substantially identical, except that the initial phase angle of each sweep segment within the sweep sequence is progressively rotated by a constant phase increment of about 360/N degrees. A second cascaded sweep sequence is generated consisting of (i) N consecutive sweep segments linked end-to-end which correspond to said first cascaded sweep sequence and (ii) an additional sweep segment linked to the N consecutive sweep segments which is positioned and phased so as to substantially suppress harmonic ghosts during correlation. One of these cascaded sweep sequences is used for the vibrator sweep sequence and the other is used for the correlation reference sequence. Any type of sweeps may be cascaded or linked according to the method, and any amount of padding (listen time) may be inserted between the individual sweep segments.








 
 
  Recently Added Patents
Ascertaining presentation format based on device primary control determination
Enediyne compounds, conjugates thereof, and uses and methods therefor
Method and apparatus for linking a web browser link to a promotional offer
Quinoid thiophene organic photoelectric material, preparation method thereof and application thereof
Compound semiconductor device and manufacturing method therefor
Browsing or searching user interfaces and other aspects
Emergency whistle, flashlight, and compass
  Randomly Featured Patents
Water-cooled internal combustion engine
Four-pan algebra balance having an imbalance correction mechanism
Method and system for assembling indoor units of air conditioners along conveyor lines
Stabilized polyphenylene ether
Method for separating, extracting and purifying poly-.beta.-hydroxyalkanoates (PHAs) directly from bacterial fermentation broth
Electrically controllable window treatment system to control sun glare in a space
Composition for circuit board manufacture
Expandable transluminal graft prosthesis for repair of aneurysm
Fiberoptic patient health multi-parameter monitoring devices and system
Fixing device of image forming apparatus