Sensitivity Analysis of MEMS Gyroscope for Radar-based True North Finding Application

True north alignment plays an important role in radar tracking performance as it affects the target's azimuth measurement. Existing conventional methods to find out the true north consume more time and resources with poor accuracy which is not preferable during wartime as well as in online data monitoring scenarios. To overcome such problems, a MEMS-based gyroscope is one of the potential tools to assist in determining the true north with limited resources and a short period with high accuracy. In this paper, the design of a single mass MEMS gyroscope is proposed in which a comb drive operated with electrostatic force is used with a differential capacitance sensing mechanism. Simulation of the proposed design is performed using IntelliSuite 8.9 MEMS software tool. The analytical results have been compared with the simulation output for sensitivity analysis. To improve the sensitivity of the device for the true north finding application of radar, the resonance frequency mismatch in the drive and sense mode has been optimized.