Enhanced gyrocompass performance with optimized static scheme in the presence of platform vibrations.

The utilization of the gyrocompass in orientation measurement applications has gained considerable significance in recent times due to its autonomy and independence from external references. This system observes and processes the Earth's rotation rate for true north measurement. The conventional four-position static north-finding scheme is widely used in gyrocompasses for azimuth determination. However, in practice, its performance is substantially compromised in the presence of platform vibrations. Therefore, this article proposes an eight-position static scheme to address the performance limitations of gyrocompasses in vibration conditions. A comparative analysis of both schemes was performed across various platform vibration conditions and samples-per-position states. Simulation analysis highlighted that the proposed eight-position scheme demonstrated significant performance enhancements in platform vibration conditions, achieving a 34.86% improvement in accuracy under the worst vibration conditions. The findings highlighted the efficacy of the eight-position scheme in mitigating the impact of platform perturbations on gyrocompass performance, thereby improving the azimuth determination accuracy of the north finders. The results of the study emphasized the potential of the proposed scheme for practical applications where precision and reliability of the north-finding are critical.