Delivering Trusted Solutions For Subsea Acoustics
- Overview
- Key Features
- Incorporates Sonardyne's 6G® Technology
- Incorporates Sonardyne's Wideband 2® signal Technology
- Sonardyne Wideband® acoustic positioning transponder and Lodestar AHRS unit in a single subsea housing
- Rechargeable 20 hour internal battery pack; option for external power
- Acoustic and manual ROV On/Off switch for Lodestar AHRS
- Upgradable to LBL aided INS
- Sonardyne Wideband® and Kongsberg HPR 400 compatible
- Autonomous data logging mode (sensor data and ranges)
- Faster command and configuration
- Simultaneous ranging and sensor data recovery in one transmission
- Integrated sound speed and pressure sensor with an additional port for auxiliary sensors
- Real time diagnostics on range measurements for quality control
- High speed acoustic modem
- Compact size for ease of handling and ROV deployment/recovery
- Data telegram output and 24V available for ROV displays
- Lodestar IMO certifie
- Datasheets
- Lodestar GyroCompatt 6
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The Lodestar GyroCompatt (LGC) integrates Sonardyne’s Wideband® acoustic positioning and Lodestar Attitude and Hearing Reference Technology (in one small, highly versatile and robust instrument). This provides high update rate wireless attitude, heading, heave, surge, sway, pressure, SV and acoustic positioning of any subsea object.
Compatible with USBL and LBL positioning systems, the Lodestar GyroCompatt product family provides real time motion data for structure deployment via the integrated high speed acoustic modem.
The internal high capacity rechargeable battery pack enables quick charge times and up to 20 hours of continuous operation with the ability to turn the gyro on and off to save battery life giving over two months of transponder life. The instrument is small and light enough to be ROV installed and a mechanical stab enables precision alignment to any structure.
Applications
Structure position and orientation can be accurately determined during lowering, set-down and as-built surveys. Using the Lodestar GyroCompatt 6 for metrology delivers the measurements required for pipe-end coupling.
The stab, gyro and transducer are pre-aligned and this speeds up spot measurements as only single observations are required.
Autonomous logging negates the need for a vessel and ROV to be on standby taking measurement during long term settlement observations.
Modular construction allows for upgrade and service access to the transponder module.
- Specifications
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Feature Type 8084-3164 - Lodestar GyroCompatt 6 Depth Rating 3000 Metres Opertaing Temperature -10ºC to +50ºC Operating Shock Rating 22g, 11ms Half Sine External Battery Pack / ROV Supply 24V (20-50V) Battery Life Acoustic Navigation Standby 3 Months Lodestar Permanently Powered On 28 Hours Acoustic Compatt Operating Frequency MF (19-36kHz) Sonardyne Wideband 2 Transmit Source Level 185-192db re 1uPa @ 1m (5 levels) Positioning Accuracy Better than 15 mm Telemetry Protocol Sonarydne SMS and Modem Ranges Tracked 14 simultaneous replies Lodestar AHRS Heading Range 0-360° Accuracy 0.1° secant latitude Settle Time Less than 5 minutes Follow Up Speed 500º / second Resolution 0.01º Roll & Pitch Range ±180º (No physical limit) Accuracy 0.01º Resolution 0.01º Heave Range ±99m Accuracy (Real Time) 5cm or 5% (Whichever the greater) Bandwidth User Selectable Resolution 0.01m Digital Output Output Telegram (e.g. For ROV LED display Yes ROV Switch Contact Closure Yes Data Back-up Data Logger 8GB internal memory (expandable to 32GB) to allow
post processing of mission dataOptions Remote Transducer for ROV applications Available Sensors Sound Speed Sensor +/- 0.03 m/s Pressure (Strain Gauge or Paroscientific DigiQuartz) 0.01% FS Physical Size (Dia x Length) 250mm x 900.2mm Weight in Air/ Weight in Water 45kg / 17kg - Manuals
- 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 requirements 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 required for our Lodestar GyroUSBL and Lodestar GyroCompatt products. These products contain components which are licensed under the EAR by the US Department of Commerce. - Related Products
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