Navigat 2100
The NAVIGAT 2100 Fiber-Optic Gyrocompass is the first solid-state, fully electronic digital gyrocompass system for marine application in strapdown technology designed for integrated bridges and advanced high-speed vessels.
The fundamental principle of the fiber-optic gyrocompass is the invariance of the speed of light and the so-called Sagnac effect. Here, a fiber-optic coil is used as a very sensitive rate sensor which is capable of measuring the speed of rotation of the earth. A combination of three such fiber-optic coils (gyroscopes) and a dual-axis electronic level sensor is able to determine the direction of true north. From the three rate of turn signals and the information from the electronic level sensor a complex Kalman filter computes the direction of the rotation of the earth from which geographical north is derived.
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