114 untethered UUV dives: lessons learned
The Ocean Engineering Division at the Naval Command Control and Ocean Surveillance Center RDT&E Division (NRaD) has developed and field tested two successive untethered, supervisory controlled UUV systems: a prototype, and an improved model. These robotic vehicle systems were part of the Advanced Unmanned Search System (AUSS) programme. It was only after the prototype was fielded, many lessons were learned. As a consequence of the prototype experience, the improved model was developed. The second system was a complete redesign, using state-of-the-art subsystems and technologies. The resulting product was both capable and reliable, yet flexible, creating a plethora of system evolutionary possibilities. Sea tests, improved tactics, and systems engineering became synergistic and interactive. AUSS involved pioneering research in underwater search and in UUV systems. Important knowledge was also gained in systems analysis, system engineering, and program evolution. Invaluable experience was gained from 114 successful untethered dives. The purpose of this paper is to share many of the lessons learned during the AUSS program.
Deep-Ocean Search and Inspection: Advanced Unmanned Search System (AUSS) Concept of Operation
Abstract : This report explains search tactics and many of the innovative ideas and technologies that are used to perform the AUSS deep search and inspection. These include the acoustic link, which makes untethered communications possible; the Doppler sonar, which enables it to track its position and navigate without interfering with the acoustic link; high-quality sonars and optical sensors; supervisory control and sophisticated computers and software.
Advanced Unmanned Search System (AUSS) Testbed. FY 1987 Development Testing
Abstract : In FY 1987, tests were conducted with the Advanced Unmanned Search System (AUSS) vehicle to define and solve technical and performance-risk areas. This report describes these FY 1987 AUSS sea tests, including the modifications and improvements, made to collect data needed to support the next-generation system design. This report covers the most critical risk areas that were encountered in the FY 1987 sea tests. The areas covered included acoustic link, acoustic tracking, vehicle navigation, vehicle control, obstacle avoidance, search sensors, and system computers.