Ray-tracing theory (I) H2.1e Sound channel Use the sound speed profile to compute Non horizontal speed Refraction and the path of sound ray through the water layers ray-tracing. column. (A) H2.2 Single beam systems H2.2a Single Single beam, split beam and Explain the principles of operation of a beam echo dual beam concepts single beam sounder detailing how sounders Beam footprint acoustic parameters influence sounder principles Specification of a single beam returns. echo sounder. Bottom detection principles (I) (matched filtering, H2.2b Single Interpret single beam returns including thresholding) and range beam returns analysis of full echo envelopes and resolution. interpretation features of the sea bed and water column. Full-echo-envelope returns and bottom characterization (A) H2.2c Single Components of a single beam Specify survey system to perform a single beam survey echo sounder system to beam survey in accordance with system include: positioning system, application requirements. motion sensor, acquisition system, source of reference Select appropriate range, scale, frequency (A) level (i.e. tide gauge, GNSS) and pulse for specific applications in Acoustic parameters of single relation to spatial resolution, bottom beam echo-sounders penetration, depth of water and water Reduction of soundings to the column analysis. specified datum H2.2d Systematic effects in system Specify processing workflow for single Processing of components: beam data. (I) single beam data Single Beam IMU/INS (I, A)
Ray-tracing theory Sound channel Non horizontal speed layers (I) H2.1e Refraction and ray-tracing. (A) Use the sound speed profile to compute the path of sound ray through the water column. H2.2 Single beam systems H2.2a Single beam echo sounders principles (I) Single beam, split beam and dual beam concepts Beam footprint Specification of a single beam echo sounder. Bottom detection principles (matched filtering, thresholding) and range resolution. Full-echo-envelope returns and bottom characterization Explain the principles of operation of a single beam sounder detailing how acoustic parameters influence sounder returns. H2.2b Single beam returns interpretation (A) Interpret single beam returns including analysis of full echo envelopes and features of the sea bed and water column. H2.2c Single beam survey system (A) Components of a single beam echo sounder system to include: positioning system, motion sensor, acquisition system, source of reference level (i.e. tide gauge, GNSS) Acoustic parameters of single beam echo-sounders Reduction of soundings to the specified datum Specify survey system to perform a single beam survey in accordance with application requirements. Select appropriate range, scale, frequency and pulse for specific applications in relation to spatial resolution, bottom penetration, depth of water and water column analysis. H2.2d Processing of single beam data (I, A) Systematic effects in system components: Single Beam IMU/INS Specify processing workflow for single beam data. (I)
S-5A_Ed1.0.2-template.docx