@inproceedings{fdi:010089468,
  title = {{E}stimation and correction of depth range and echo level errors due to water-column temperature and salinity on sound scattering layer [r{\'e}sum{\'e}]},
  author = {{C}oly, {Y}. and {P}errot, {Y}annick and {B}rehmer, {P}atrice and {M}achu, {E}ric and {S}ow, {B}.{A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}ater temperature and salinity are the key environmental parameters involved in the acoustic signal processing. {I}n absence of clear procedure, temperature and salinity value are usually used at a fixed point in the water column to estimate the sound celerity in the studied area. {C}onsider-ing temperature and salinity as having negligible effects in estimates of acoustic variables may lead to errors in dependent acoustic variables as the volume backscattering coefficient {S}v, the nautical area backscattering coefficient s{A} and the target distance, i.e., depth for vertical echo-sounder. {W}e examine the impact of environmental errors and their effects on the level of {S}v, s{A} and range r. {T}he results shown that the effect may not be negligible. {T}he nautical area backscat-tering coefficient s{A} was the most affected by environmental errors. {T}he deep ocean areas were the most concerned by these errors vs. surface and shallow coastal areas. {F}ailure to correct for environmental errors in acoustic studies can lead to inaccurate results on the positions of the targets studied and biomass assessment. {A}bacuses were built to identify areas of interest where environmental corrections should be implemented and we share corrective code integrating tem-perature and salinity water profile for fisheries acoustics data correction.},
  keywords = {},
  volume = {4},
  numero = {54},
  pages = {47--48},
  booktitle = {{W}orking group of fisheries acoustics, science and technology ({WGFAST})},
  year = {2022},
  ISSN = {2618-1371},
  URL = {https://www.documentation.ird.fr/hor/fdi:010089468},
}