FN Archimer Export Format
PT J
TI Backscatter calibration of high-frequency multibeam echosounder using a reference single-beam system, on natural seafloor
BT 
AF ELEFTHERAKIS, Dimitrios
   BERGER, Laurent
   LE BOUFFANT, Naig
   PACAULT, Anne
   AUGUSTIN, Jean-Marie
   LURTON, Xavier
AS 1:1;2:1;3:1;4:1;5:1;6:1;
FF 1:PDG-DFO-NSE-ASTI;2:PDG-DFO-NSE-ASTI;3:PDG-DFO-NSE-ASTI;4:PDG-DFO-NSE-NE;5:PDG-DFO-NSE-ASTI;6:PDG-DFO-NSE-ASTI;
C1 Inst Francais Rech Exploitat Mer Ifremer, DFO NSE ASTI, Underwater Acoust Lab, CS 10070, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
SI BREST
SE PDG-DFO-NSE-ASTI
   PDG-DFO-NSE-NE
IN WOS Ifremer jusqu'en 2018
IF 1.471
TC 25
UR https://archimer.ifremer.fr/doc/00429/54016/57434.pdf
LA English
DT Article
CR ETAL2040-02
   REM2040-01
   REM2040-02
BO Thalia
DE ;Calibration;Seafloor backscatter;Multibeam echosounder;Single-beam echosounder
AB The calibration of multibeam echosounders for backscatter measurements can be conducted efficiently and accurately using data from surveys over a reference natural area, implying appropriate measurements of the local absolute values of backscatter. Such a shallow area (20-m mean depth) has been defined and qualified in the Bay of Brest (France), and chosen as a reference area for multibeam systems operating at 200 and 300 kHz. The absolute reflectivity over the area was measured using a calibrated single-beam fishery echosounder (Simrad EK60) tilted at incidence angles varying between 0° and 60° with a step of 3°. This reference backscatter level is then compared to the average backscatter values obtained by a multibeam echosounder (here a Kongsberg EM 2040-D) at a close frequency and measured as a function of angle; the difference gives the angular bias applicable to the multibeam system for recorded level calibration. The method is validated by checking the single- and multibeam data obtained on other areas with sediment types different from the reference area. 
PY 2018
PD JUL
SO Marine Geophysical Research
SN 0025-3235
PU Springer
VL 39
IS 1-2
UT 000430016500005
BP 55
EP 73
DI 10.1007/s11001-018-9348-5
ID 54016
ER

EF