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| Malik, Mashkoor; Schimel, Alexandre C. G.; Masetti, Giuseppe; Roche, Marc; Le Deunf, Julian; Dolan, Margaret F.j.; Beaudoin, Jonathan; Augustin, Jean-marie; Hamilton, Travis; Parnum, Iain. |
| Seafloor backscatter mosaics are now routinely produced from multibeam echosounder data and used in a wide range of marine applications. However, large differences (>5 dB) can often be observed between the mosaics produced by different software packages processing the same dataset. Without transparency of the processing pipeline and the lack of consistency between software packages raises concerns about the validity of the final results. To recognize the source(s) of inconsistency between software, it is necessary to understand at which stage(s) of the data processing chain the differences become substantial. To this end, willing commercial and academic software developers were invited to generate intermediate processed backscatter results from a common... |
| Tipo: Text |
Palavras-chave: Acoustic backscatter processing; Multibeam Echo Sounders; Seafloor mapping. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00599/71133/69448.pdf |
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| Beaudoin, Jonathan; Smyth, Steve; Furlong, Arnold; Floc'H, Henri; Lurton, Xavier. |
| High rate sound speed profiling systems have the potential to maximize the efficiency of multibeam echosounder systems (MBES) by increasing the accuracy at the outer edges of the swath where refraction effects are at their worst. In some cases, high rate sampling on the order of tens of casts per hour is required to capture the spatio-temporal oceanographic variability and this increased sampling rate can challenge the data acquisition workflow if refraction corrections are to be applied in real-time. Common bottlenecks result from sound speed profile (SSP) preprocessing requirements, e.g. file format conversion, cast extension, reduction of the number of points in the cast, filtering, etc. Without the ability to quickly pre-process SSP data, the MBES... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00115/22615/20329.pdf |
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