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- Title
Assessment of the Technological Maturity of Manned Submersible Navigation Positioning Systems.
- Authors
Naga Jyothi, Vandavasi Bala; Ramesh, Raju; Vedachalam, Narayanaswamy; Ramadass, Gidugu Ananda
- Abstract
Precise navigation and positioning are key requirements for effective and safe operations of the deep-water human-occupied vehicles (HOVs) used for scientific exploration. This article presents the HOV real-time position determination methodology; technological maturity of the Aided Inertial Navigation System (A-INS); likely position errors due to subsystem misalignments, acoustic positioning aid outages, importance of sound velocity profile in precise positioning by numerical modeling; and the reliability of the state-of-the-art A-INS configuration in the HOV. It is identified that the A-INS comprising an internal measurement unit aided by Doppler Velocity Log, redundant depth sensors, and ultra-short–baseline acoustic positioning systems with inbuilt communication capability shall have a “mean time to fail” period of ~6 years.
- Subjects
OCEANOGRAPHIC submersibles; SPEED of sound; INERTIAL navigation systems; SUBMERSIBLES; TELECOMMUNICATION systems; NAVIGATION; ACOUSTIC transducers; SPACE flight
- Publication
Marine Technology Society Journal, 2021, Vol 55, Issue 5, p129
- ISSN
0025-3324
- Publication type
Article
- DOI
10.4031/mtsj.55.5.4