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
Storage device performance alignment notification
Vehicle inertial sensor systems
Flip flop shoe
System, method and computer program product for monitoring and controlling network connections from a supervisory operating system
Controlling a video window position relative to a video camera position
Display stand for a mobile tablet computer
Persistent luminescence nanoparticles used in the form of a diagnosis agent for in vivo optical imaging
  Randomly Featured Patents
Press apparatus and methods for fusing overlapped thermoplastic sheet materials
Targeting substance-diagnostic/therapeutic agent conjugates having Schiff base linkages
Telephone, telephone security control method, telephone security control program and program recording medium
Offset indicator extension
Stick-like paint container
Rotation angle detecting device
Enhanced frequency determination for spectrum analyzers or the like
Steering control apparatus
Method and apparatus for detecting device support in a graphical user interface
Method and means for a security control of burners