OSU PROFESSIONAL WORKSHOP: Geospatial Surveying

Event Details:

Name: Geospatial Surveying Multibeam Crash Course
Date: September 17-18 2024
Location: Owen Hall, Room 110, Oregon State University
Address: 1501 SW Campus Way, Corvallis, OR 97331

Welcome to the Hydrographic Surveying Multibeam Crash Course!

Topics range from geodesy, GNSS, hydrographic surveying, least squares adjustments, photogrammetry, 3D laser scanning, LIDAR, UAS, remote sensing, horizontal & vertical datums, and more. Be sure to check the list of upcoming workshops for future offerings, dates, and registration!

What to Expect:

HydroOctave Consulting’s unique approach to instruction provides direct value to the hydrographer by focusing on which sonar settings and/or survey design decisions are most impactful towards their end results. Practical instruction demonstrates clearly how surveyors can add value in their operational decision making. Theoretical concepts are covered lightly when necessary to give the concepts some backing without overwhelming the core concepts. The aim is to provide practical and actionable ideas to help a hydrographic surveyor the very next time they go to the field, making confident and informed decisions that achieve results. In-class instruction is optionally cemented with a day in the field on your vessel with your hardware and software. Tailored exercises are planned and executed with participants to ensure understanding of the concepts.

Key Learning Outcomes:

• Learn how to estimate your ability to detect, resolve and characterize objects on the seafloor with understanding of multibeam resolution fundamentals.
• Master the art of juggling vessel speed, swath width and ping rate to achieve targeted sounding density/hitcount to ensure target detection/resolution.
• Understand the major sources of uncertainty, how to plan for them before the mission and how to monitor and adapt your survey operations to achieve accuracy targets in the field.

Curriculum:

1. Sonar Controller and Acquisition System
2. Resolution
   1. Importance of resolution
   2. Review of Multibeam Fundamentals: Imaging Geometry, Typical Products
   3. Review of Resolution: Beamwidth, beam steering and pulse length/type
   4. How to operate your multibeam most effectively to achieve resolution goals
3. Density
   1. Importance of Density
   2. Review of Density: Speed, Swath/Beam geometry, Ping rate, Dual/Single Swath
   3. Real-time Monitoring of Density
   4. Other Effects: Motion effects, line planning/running, stabilization
   5. Sensor specifics – How to operate your multibeam most effectively to achieve density goals
4. Uncertainty
   1. Importance of Uncertainty
   2. Survey Accuracy Standards & Orders
   3. Achieving Standards – In Theory (TPU Tune-Up)
   4. Achieving Standards – In Practice
   5. Human Error
   6. Sensor specifics – How to operate your multibeam most effectively to achieve uncertainty goals
5. Backscatter
   1. Importance of Backscatter
   2. Review of Backscatter Fundamentals
   3. Impact of sonar settings changes
   4. Backscatter Acquisition – General
   5. Backscatter Acquisition – Sensor and Software Specific – How to operate your multibeam most effectively to achieve backscatter goals

Logistics:

Refreshments: Coffee and snacks will be provided to keep you energized and focused throughout the workshop.

Meals: Please note that meals will not be provided, so plan accordingly.

Parking Guidance: It is best to park on campus, City of Corvallis street parking is heavily monitored.

• Daily parking passes can either be bought online or via one of the many parking pay stations on campus.
• See OSU’s Visitor Parking page for maps and information.