Description
Lodestar is a solid state IMO approved Attitude and Heading Reference System (AHRS). The unit comprised of six sensing elements, three Ring Laser Gyros (RLG) and three linear accelerometers, running a Sonardyne developed gyrocompass algorithm.

KEY FEATUREs
• Single IP66 rated solution for motion sensor and gyrocompass
• 0.1º heading accuracy
• 0.01º roll and pitch accuracy
• <5 minute settling time
• 5cm / 5% heave accuracy
• Fast follow up speed of 500º / sec
• MTBF RLG >100,000 hours MTBF Lodestar >50,000 hours
• Subsea versions available rated to 1,000, 3,000 and 5,000 metres
• Flexible power input AC or DC
• Transport approved Li-Ion battery back up as standard
• Internal 4GB memory allows post processing of a 2 day mission
• Designed and approved to IMO Resolution A424(XI)
• Ethernet interface
• INS ready