The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
Performance of a Low-Power One-Way Travel-Time Inverted Ultra-Short Baseline Navigation System
-
2021
-
-
Source: OCEANS 2021: San Diego – Porto (2021)
[PDF-6.62 MB]
Details:
-
Journal Title:OCEANS 2021: San Diego – Porto
-
Personal Author:
-
NOAA Program & Office:
-
Description:We report the performance of a low-power one-way travel-time inverted ultra-short baseline (OWTTIUSBL) system designed specifically for use on long endurance autonomous underwater vehicles (AUVs), as deployed during trials in late 2020. The system consists of a WHOI Micromodem-2 as the acoustic processing core coupled with a MEMS attitude and heading reference system (AHRS) and bespoke four-channel array. At low tilts our system provides standalone position fixes to better than ±5° azimuth at slant ranges in excess of 1500 m. The system consumes 1.1 W when active and is capable of entering a low-power 10 mW sleep mode sufficient to maintain its time base. These specifications are based on data collected with the device lowered from a vessel and excited by a mobile source on the vessel’s small boat. We further present preliminary results from the device as installed on a Seaglider that show the potential for improved low-power navigation insensitive to temporal or depth-dependent variations in current profile.
-
Source:OCEANS 2021: San Diego – Porto (2021)
-
DOI:
-
Format:
-
Publisher:
-
Document Type:
-
Funding:
-
Rights Information:Accepted Manuscript
-
Compliance:Submitted
-
Main Document Checksum:
-
Download URL:
-
File Type:
