Library of velocity dependent extended spread-spectrum codes

Details Library of velocity dependent extended spread-spectrum codes Library of velocity dependent extended spread-spectrum codes

2008-01-01

2008-01-01

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

C367S021000

Reexamination Certificate

active

10537718

ABSTRACT:
A method and apparatus is provided for determining a propagation time delay. The apparatus includes at least one source adapted to generate a plurality of positioning signals, at least one receiver deployed along a seismic sensing cable, wherein the receiver is adapted to receive the plurality of positioning signals from the at least one source, and a plurality of computed Doppler-shifted positioning signals corresponding to the plurality of positioning signals. The apparatus also includes a signal processing unit adapted to determine a propagation time delay between the source and the receiver using the generated positioning signals, the received positioning signals, and the plurality of computed Doppler shifted positioning signals.

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