DELPH wrote:A presentation of ECHOES technology and DELPH software can be found on our dedicated web - http://delph.ixsea.com - in the "readings" part.
IXSEA manufactures a broad range of high quality sub-bottom profilers: ECHOES.
From low-frequency and very high power to high-frequency and very high resolution models including hull/pole mounted and towed systems, ECHOES has many built-in advantages:
- High to very high power due to specific transducer design and integration
- Flat and wide frequency spectrums allowing fully user defined chirp signatures
- Simplified and robust acquisition software
- New generation, straight-forward and powerfull processing, interpretation and mapping software: DELPH Seismic
A presentation of ECHOES technology and DELPH software can be found on our dedicated web - http://delph.ixsea.com - in the "readings" part.
Gery wrote:Hi Philippe, thanks for sharing these readings. I enjoyed reading the pdfs, although they are quite good and couldn't download it!, some processing stages are missed. I couldn't find a section about getting the amplitude spectrum in the frequency domain, I think an important step in post-processing to define the type and cut frequencies of each filter (i.e. notch, band-pass, etc..). Perhaps the software has that option but I didn't find it in the pdf. I point this out given some jobs in the past using boomer showed me that not all the spectrum (bandwith around 300 to 3000 Hz as it's stated in the pdf) is signal. Even though the survey was taken in a quite environment and with a low energy (100 Joules), random noise was present in the high-frequency part of the spectrum. I haven't processed chirp before (i.e. from a SEG-Y file, examining gathers in different domains, etc..), but perhaps this system is also affected in the same way as boomer for instance. So, take care with this!!!
Another thing I couldn't find is the output file from the acquisition system, is it SEG-Y rev.1? I've seen some pseudo SEG-Y files (e.g. SEG) coming out from not so good (:|) acquisition programs (again STRATABOX!!!) and ODC files, and have to admit they should be improved. I hope this is not the case.
Good job! keep it up!
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