Reference Information

This chapter is a learning reference that briefly covers knowledge essential to understanding Certus and INS generally. It explains the following concepts in simple terms so that people unfamiliar with the technology may understand it:

• Technology Overview, including Global Navigation Satellite System (GNSS) , Inertial Navigation System (INS) and Attitude and Heading Reference System (AHRS)
• The Sensor Co-ordinate Frame
• The Body Co-ordinate Frame
• Roll, Pitch and Heading
• Geodetic Co-ordinate System
• NED Co-ordinate Frame
• ECEF Co-ordinate Frame