Invention Grant
US08335127B2 Method for generating spread spectrum driver signals for a seismic vibrator array using multiple biphase modulation operations in each driver signal chip
有权
用于在每个驱动器信号芯片中使用多个双相调制操作来产生用于地震振子阵列的扩频驱动信号的方法
- Patent Title: Method for generating spread spectrum driver signals for a seismic vibrator array using multiple biphase modulation operations in each driver signal chip
- Patent Title (中): 用于在每个驱动器信号芯片中使用多个双相调制操作来产生用于地震振子阵列的扩频驱动信号的方法
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Application No.: US12462954Application Date: 2009-08-12
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Publication No.: US08335127B2Publication Date: 2012-12-18
- Inventor: Stig Rune Lennart Tenghamn
- Applicant: Stig Rune Lennart Tenghamn
- Applicant Address: NO Lysaker
- Assignee: PGS Geophysical AS
- Current Assignee: PGS Geophysical AS
- Current Assignee Address: NO Lysaker
- Main IPC: G01V1/38
- IPC: G01V1/38
Abstract:
A method for generating seismic energy for subsurface surveying include operating a first seismic vibrator above an area of the subsurface to be surveyed and operating at least a second seismic vibrator above the area substantially contemporaneously with the operating the first seismic vibrator. The first and the second vibrators each have a different selected frequency response. The first and second vibrators each is operated by a same direct sequence spread spectrum signal, wherein a different number of modulation operations for each logical value in the direct sequence spread spectrum signal is selected for each vibrator.
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