This course guides the calibration, quality control, and quality assurance of multibeam survey systems used on surveys of Federal navigation projects and water control structures. Only general operating principles are outlined in this course. Comprehensive instructions for installing and operating specific multibeam systems, including the data acquisition, processing, and editing of data from these systems, are found in the manufacturer's operating manuals and software processing manuals specific to those systems.

Topics:

• Scope / Applications of Acoustic Multibeam Survey Systems
• Principles of Multibeam Depth Measurement
• Depth Measurement Principles
• Physical and Electronic Beamforming
• Interferometric Systems
• Beam Spacing and Footprint Size
• Underwater Structure Investigation Surveys
• Configuring Multibeam Transducers
• Fixed Hull-Mounted Systems
• Through-Hull Transducer Mountings
• Bow, Stern, and Side Mounted Transducers
• Quality Control Procedures for Multibeam Systems
• Vessel Squat/Settlement, Draft, and Datum Variations
• Calibrations, Testing, and Checks
• Multibeam Survey Data Collection, Editing, and Processing
• Quality Assurance Performance Tests on Multibeam Systems
• Summary of Multibeam QC and QA Criteria

Intended Audience:
This course is intended for professional land surveyors, coastal, civil, water resource, environmental, petroleum, and other engineering professionals whose job description may require an intermediate knowledge of hydrography surveying principles using multibeam acoustical surveying principles.

Publication Source:
USACE