A gyrocompass is a navigation device that determines true north using the Earth’s rotation rather than relying on magnetic fields. In inertial navigation systems (INS), gyrocompasses provide high-precision heading information, making them essential for marine, aerospace, and military applications.
How a Gyrocompass Works in INS
Detects Earth’s Rotation – A spinning gyroscope aligns with the Earth’s rotational axis.
Stabilizes to True North – The system compensates for drift and external forces, always pointing to true north instead of magnetic north.
Integrates with INS – Provides heading and orientation data, reducing drift in long-duration navigation.
Advantages of Gyrocompasses in INS
✔ Unaffected by Magnetic Interference – Ideal for submarines, aircraft, and military vehicles.
✔ Provides True North Reference – Essential for long-range navigation where GNSS may be unavailable.
✔ Works in All Weather Conditions – Unlike magnetic compasses, gyrocompasses are not affected by local variations.
Gyrocompass vs. Other Heading Sensors
