Water column data detecting objects on the seafloor under gain, pulse length varying surveying conditions. Multiple signal returns, aliasing of multiple signals in Explain the use of water column returns the water. and differentiate from bottom detection. H2.4c positioning system, telemetry, Specify survey system to perform a systems motion and attitude sensors, survey in accordance with acquisition system, application requirements. source of reference (i.e. (A) tide gauge, GNSS), Speed measurements H2.4d Multi-beam data elements: Describe how and where data elements data Beam and travel-time data are combined to produce geo-referenced processing IMU/INS soundings. Positioning data Time stamping Integrate and merge data elements in (A) Offsets between sensor preparation for data processing. reference points Sound speed profile Data file formats H2.4e Principles and geometry of Analyze the principles and geometry of Interferometric interferometric interferometry and differencing measurement) sonar systems bathymetric sonars and the arrangement Sounding determination of transducer arrays. principles (A) Mounting methods and towing Explain the need for filtering phase Transducers arrangement measurement data for depth, object Sounding filtering and binning detection and backscatter. techniques Explain the effect of aperture size and transducer geometry on array performance.
Water column data gain, pulse length Multiple signal returns, aliasing of multiple signals in the water. detecting objects on the seafloor under varying surveying conditions. Explain the use of water column returns and differentiate from bottom detection. H2.4c systems (A) positioning system, telemetry, motion and attitude sensors, acquisition system, source of reference (i.e. tide gauge, GNSS), Speed measurements Specify survey system to perform a survey in accordance with application requirements. H2.4d data processing (A) Multi-beam data elements: Beam and travel-time data IMU/INS Positioning data Time stamping Offsets between sensor reference points Sound speed profile Data file formats Describe how and where data elements are combined to produce geo-referenced soundings. Integrate and merge data elements in preparation for data processing. H2.4e Interferometric (A) Principles and geometry of interferometric measurement) sonar systems Sounding determination principles Mounting methods and towing Transducers arrangement Sounding filtering and binning techniques Analyze the principles and geometry of interferometry and differencing bathymetric sonars and the arrangement of transducer arrays. Explain the need for filtering phase measurement data for depth, object detection and backscatter. Explain the effect of aperture size and transducer geometry on array performance.
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