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
Composite materials comprising aggregate and an elastomeric composition
ASICs having programmable bypass of design faults
Organic electroluminescence device
Liquid-level sensor
Active gate drive circuit
Polymeric structures comprising a siloxane
Microporous membranes and methods for producing and using such membranes
  Randomly Featured Patents
Microelectronic package and method of manufacturing same
Toilet assembly
Torsion spring adjustment apparatus
Device for preventing the turbo-charger from over-running
Molecular sieves and processes for their manufacture
Security bar assembly for double doors
Chair
System and method of dynamically modifying a spoken dialog system to reduce hardware requirements
Apparatus for dispensing dough in a pattern utilizing moveable nozzles
Induction velocity meter