Différences

Ci-dessous, les différences entre deux révisions de la page.

--- sondeurs:start [2016/02/26 18:00] – zaragosi
+++ sondeurs:start [2016/04/08 12:25] (Version actuelle) – [Marion Dufresne old] zaragosi
@@ Ligne 7: / Ligne 7: @@
 ====Pourquoi Pas ?====
 ===Sondeur de sédiments===
-Eramer (1.8 -> 8 kHz)
+Echoes 3500 (1.7 -> 5.3 kHz)
+(chirp sonar Echoes 3500 emitting chirp pulses with a frequency modulation varying from 1.7 to 5.3 kHz)
 ===Sondeur multifaisceau===
 Reson Seabat 7150 (12 / 24 kHz)
+====Marion Dufresne old====
+Thales Sea Falcon 11 multibeam sonar swath-mapper (previously named TSM 5265B), 5
+transmit beams – central frequency 12 kHz, frequency separation 300 Hz, 120°-150°
+beam angle. Bathymetry and backscatter data acquired. In water depths shallower than
+~800 m operation was switched to single beam (from 5-beam) transmission because of
+the higher ping rates.
+bandwidth (common receive array with multibeam), beam width 7.4° (transmission) &
+.6° (reception); monitor record on 50 cm thermal paper roll.
+Analogue 3.5 kHz chirp sub-bottom profiler, ~25° beam, Raytheon Line Scan Recorder
+(46 cm EPC roll chart)
+====Marion Dufresne new====