High-precision fiber optical gyro with extended dynamical range

At present time fiber-optic gyroscopes (FOGs) with closed-loop feedback scheme of operation are becoming widely used in inertial navigation systems. One of the main restrictions on FOG usage in the applications of inertial navigation is the limited range of measured angular rate (dynamic range). In this paper we present the results of the new high-precision FOG SRS-1001 development and test results. SRS-1001 FOG, which is the modification of serial SRS-1000 FOG, allows to overcome the observed restrictions and shows the extended dynamic range of 1000 °/s, compared with the dynamic range of 90 °/s for the standard SRS-1000. Furthermore, SRS-1001 has the potential of further dynamic range increase up to 2000 °/s with the retention of high scale factor stability in overall measurement range.