MEMS gyroscope is micromechanical gyroscope that measure angular rate based on the Coriolis force. They are used in a wide range of applications, such as north seeking, navigation, positioning and orientation, etc. The full name of MEMS is micro mechanical system. In recent years, the accuracy level of MEMS gyroscopes has improved rapidly, with obvious advantages, and it has become the choice of many industries. However, no device is perfect, and MEMS gyros also have their own flaws. Noise is one of them. In order to minimize the impact of defects on accuracy, corresponding compensation methods are needed to deal with the occurrence of defects. This article aims to analyse the causes and solutions of noise problems.
The following will analyze the causes of noise, Allan variance, noise sources and solutions.

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