Autonomous hydrographic surveying When fiction becomes reality

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Presentation transcript:

Autonomous hydrographic surveying When fiction becomes reality Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Ship’s Characteristics Length = 2.5m / Width = 1.5m Draft= 30cm Survey speed = 3-4 knots 4 lithium batteries = 6-7 hrs autonomy Wifi communication up to 6 km Anti-collision and anti-grounding system Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Hydrographic equipment R2Sonic 2020 multibeam POS/MV Surfmaster Base X² Sound profiler and winch Radio UHF Pacific Crest Data acquisition Hardware and software Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Pros and Cons Quick and easy launching Simple transportation logistics Surveys in shallow waters Reduced ecological footprint Limited capacities in rough seas Reduced autonomy compared to hydrographic vessels Noise in the data… (Depth. TD 30cm vs 50cm) Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Surveys in 2018 Natashquan (1er september 1st and 2nd) No launching ramp available 95% of the survey in autonomous mode Depth range from -0.5 m to 14.7m at CDatum Area 0.14 km² Hours Days On site preparation 5 0.7 System deployment 2.5 0.3 Lost time weather 0.0 Surveying 12.5 1.7 Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Surveys in 2018 Tête à la baleine (september 4th through 6th) Under Hypack mode Strong currents and waves 95% of the survey in autonomous mode Range of depths from -0.6 m to 52.4m at CDatum Area covered 0.38 km² Hours Days On site preparation 5 0.7 System deployment 2.5 0.3 Lost time weather 0.0 Surveying 16.5 2.2 Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019

Surveys in 2018 Baie des Moutons (september 12th and 13th) Antenna switch to unidirectional Complementary to mothership (CCGS Frederick G. Creed) 95% of the survey in autonomous mode Depth range -0.7 m to 62.4m at CDatum Area 0.60 km² Hours Days On site preparation 4 0.5 System deployment 2 0.3 Lost time weather 0.0 Surveying 13 1.7 Jonathan Morin, Eric Lebel, Guillaume Martel, Louis Cormier, March 2019