Delivering Trusted Solutions For Subsea Acoustics
- Overview
- Key Features
- Incorporates Sonardyne's 6G® Technology
- Incorporates Sonardyne's Wideband 2® signal Technology
- Transceiver and Lodestar AHRS / INS offering high performance
- Available in two versions; standard and deepwater optimised
- Calibration free offering rapid set-up
- Class leading system precision and accuracy
- Sonardyne Marksman, DP-INS and Ranger 2 compatible
- Water-blocked transducer array protects electronics in the event of damage
- Compatible with Sonardyne’s through-hull, over-the-side and stem tube deployment systems
- Datasheet
- Lodestar GyroUSBL
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Lodestar GyroUSBL combines a Sonardyne 6th (6G®) generation high performance HPT USBL transceiver and a Lodestar Attitude and Heading Reference System (AHRS) / Inertial Navigation System (INS) in the same mechanical assembly.
With the AHRS / INS in fixed mechanical alignment to the USBL’s acoustic array, the Lodestar GyroUSBL can be quickly deployed without need for a USBL calibration to determine the alignment of the ship’s motion sensors to the acoustic transceiver. For certain applications, this can enable significant savings in vessel time and operational costs.
The HPT transceiver component of the instrument utilises the latest Sonardyne Wideband® 2 signal processing and is fully compatible with other products in the new Sonardyne 6G® equipment range.
Lodestar is tightly integrated into the USBL system providing power and communications to the HPT transceiver and embedded highly accurate time-stamping of all motion and acoustic data. This enables unparalleled precision and accuracy of position estimation by removing many of the sources of error associated with all USBLs such as lever arm offsets, pole bending, and ship flexing.
In addition, because many of the system parameters are now fixed, no USBL calibration is required during installation so the system is easier to install and set-up.
Manufactured in Aluminium-Bronze the Lodestar GyroUSBL is ideally suited for short term temporary installations on vessels of opportunity using through-hull or over-the-side poles. It is also ideal for permanent installation on flexible stem tubes.
In case of operational damage to the USBL transducer array, all electronics are robustly protected behind a double-sealed, pressure-resistant bulkhead. This ensures that if the transducer face is breached, the Lodestar and acoustic transceiver do not flood.
- Specifications
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Feature Type 8084-000-0445 Type 8084-000-0447 Operating Frequency MF (18–36kHz) MF (18–36kHz) Transceiver
PerformanceOperating Range
Acoustic Coverage
Range Precision
Positioning RepeatabilityUp to 7,000 metres
Up to ±90º
Better than 15 mm
All transceivers tested to better than 0.1% of slant range 1 DrmsUp to 7,000 metres
Up to ±90º Optimised for deep water (depending on frequency of operation)
Better than 15 mm
All transceivers tested to better than 0.1% of slant range 1 DrmsElectrical Maximum Power +48 V DC Max 160 W +48 V DC Max 160 W Communication RS485, baud rate switchable
Ethernet 100MbpsRS485, baud rate switchable
Ethernet 100MbpsDimensions 602 mm x 225 mm (dia) 616 mm x 310 mm (dia) Weight in Air 51.0 kg 64.0 kg Weight in Water 28.5 kg 38.0 kg Options Tilted Array Adaptor Tilted Array Adaptor Note 1. The The absolute accuracy of the system is dependent upon the quality of attitude and heading sensors, beacon source level, vessel noise, water depth, mechanical rigidity of the transceiver deployment machine and proper calibration of the total system using CASIUS - Support
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Technical Bulletins
Title Description Lodestar based product export licensing - No: TB13-007 Sonardyne has received several enquiries from Customers who have purchased Sonardyne Lodestar based products (currently Lodestar, SPRINT, Lodestar GyroCompatt and Lodestar GyroUSBL) about the requirement to have the product licensed by the US Department of Commerce. This document describes the US Department of Commerce licensing requirements for Lodestar based products. Lodestar based product export licensing - No: TB13-003 Sonardyne is pleased to issue new guidelines on the re-export licences for our Lodestar GyroUSBL and Lodestar GyroCompatt products. These products contain components which are licensed under the EAR by the US Department of Commerce. - Manuals
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