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Design of Near-orthogonal Air-gun Sequences for Marine Seismic Source EncodingNormal access

Authors: M.B. Mueller, D.F. Halliday, D.J. van Manen and J.O.A. Robertsson
Event name: 78th EAGE Conference and Exhibition 2016
Session: Simultaneous Sources
Publication date: 31 May 2016
DOI: 10.3997/2214-4609.201600948
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 1.27Mb )
Price: € 20

We present a method to design near-orthogonal air-gun firing sequences for applications that exploit sequence orthogonality. We demonstrate that using a simulated annealing approach, we can optimize the autocorrelation and crosscorrelation properties of two sequences. Using a standard air-gun array we show the design of a pair of optimized air-gun firing sequences. The designed sequences are close to orthogonal to each other and provide a significant benefit for simultaneous source separation based on sequence encoding. This new method enables designing tailor-made air-gun firing sequences for multipurpose applications and can easily be extended to include additional design criteria.

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