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
Method for producing a flexible composite elastomeric polyurethane skin
Control of protein activity using a conducting polymer
Method for assembling a camera module, and camera module
Bandana
Systems and methods for flow mirroring with network-scoped connection-oriented sink
Method and apparatus for error correction in MBMS receipt system
Data processing system, data processing method, and image forming apparatus
  Randomly Featured Patents
Process for the manufacture of a .gamma. -acetoxy-tiglic aldehyde
Lanced card guide
System and method for digital document alignment
Alcohol-ester separation by recrystallization
Solder joints for copper metallization having reduced interfacial voids
Microphone assembly having a windscreen of high acoustic resistivity and/or hydrophobic material
Plate bracket for mounting a cassette box
Call arrangement and connection using messaging
Manufacturing process of conductive polymer composite bipolar plate for fuel cell having high gas permeability-resistance and heat-resistance
Method of fabrication of gates for integrated circuits