Fundamentals of acoustics, multibeam sonar systems, motion compensation, side scan sonar methods, LiDAR bathymetry, acoustic positioning, reporting, charting and error analysis, and electronic navigation charts (ENCs).
This paper follows on from the introductory theory of hydrography covered in SURV 322 Hydrographic Surveying. It covers the underlying theoretical framework for acoustics, modern sidescan sonar and multibeam sonars (both beam-forming and sidescan/interferometric systems) in more depth. Methods of vessel motion sensing (heading, pitch and roll) are also covered. This, along with the associated uncertainty theory, leads to modern methods of data processing, analysis and presentation, including the combined uncertainty and bathymetry estimating (CUBE) algorithm and the development of the navigation surface. Calibration of equipment, data connections and reporting is also covered.
This paper is offered in odd-years (2021, 2023, etc.)
|Paper title||Advanced Hydrographic Surveying|
|Teaching period||Not offered in 2020, expected to be offered in 2021|
|Domestic Tuition Fees (NZD)||$1,233.91|
|International Tuition Fees (NZD)||$5,150.69|
- (SURV 301 or 311) and (SURV 302 or 312) and SURV 322
- SURV 422, 452
- More information link
- View more information in this hydrography as a career video
- Teaching staff
- Co-ordinator and Lecturer: Emily Tidey
Practical and Lab Support: Emily Tidey and Ray McLennan
- Paper Structure
- This paper covers the following:
- Data management and interfacing
- Acoustics and signals
- Hydrographic equipment and operations: sidescan sonars, multibeam echo sounders, LiDAR, remote sensing, mobilisation and calibrations, geophysics and offshore industrial operations
- Electronic charting and maritime issues
- Hydrographic certification and organisations
- Teaching Arrangements
- Lectures: Three 1-hour lecturers per week
Labs: Eight during semester
Practicals: Four during semester
Blackboard Use: Information and links will be provided on Blackboard as required.
Terms: Hydrographic surveying skills are acquired through practice, which complements the theory gained in lectures and readings. Therefore, students must have attended all of the practical sessions and have submitted all of the assignments.
Internal Assessment: 50%, made of theoretical assignments, practicals and practical reports and a mid-semester test
Exam: 50%, 3 hours
- Highly Recommended:
- IHO Manual of Hydrography
- IHO Standards for Hydrographic Surveys s44
- LINZ HYSPEC
Other texts are available in the Science and School of Surveying Libraries and online.
- Graduate Attributes Emphasised
- Global perspective, Interdisciplinary perspective, Lifelong learning, Communication,
Critical thinking, Environmental literacy, Information literacy, Research, Self-motivation,
View more information about Otago's graduate attributes.
- Learning Outcomes
- Deepen the understanding of acoustics and sonar theory
- Understand the theory and use of multibeam echosounders and sidescan sonars
- Develop understanding of the concepts of uncertainty modelling and management and its use in modern bathymetric modelling
- Understand the concept of seafloor characterisation from sonar backscatter information
- Understand the basic concepts of non-acoustical bathymetric measurement
- Work with and understand data connectivity, processing and reporting in hydrographic environments
- Further develop theoretical knowledge and practical hydrographic surveying skills in a range of situations
- Process and analyse multibeam and sidescan data using suitable software and create appropriate products
- Briefly cover marine law applicable to hydrography