光纤惯组温度补偿模型和测试技术研究

光纤惯性导航系统中的光纤陀螺和石英加速度计的漂移受温度变化影响显著，导致其在导航系统中的应用受到各种制约。现在工程上采用的温控技术虽然保证了光纤陀螺工作环境温度的稳定，但其需要在陀螺内增加温控设置，并对设置的温度控制性能提出了较高的要求，这样必定会增加光纤陀螺的体积、质量和成本，同时温控精度也受到制约。提出了一种基于光纤惯性测量组合的温度补偿模型，并设计相应的试验方法对陀螺仪和加速度计的零偏和标度因数进行了温度补偿。试验验证，提出的温度模型准确有效，有利于补偿因温度变化引起的加速度计和陀螺仪的零偏和标度因数影响，达到提高惯性导航系统的导航精度的目的。

Research on Temperature Compensation Model and Test Technology of Optical Fiber Inertial Measurement Unit

The drift of fog and quartz accelerometer in fog Inertial Measurement Unit (IMU) is significantly influence by the temperature, leading that its application in navigation system is limited. The temperature control technology used in engineering is the temperature stability guarantee of the fiber optic gyro, but it needs to add temperature control in the gyroscope, and put forward higher requirements for setting temperature control performance. This will denfinitely increase the volume, quality and cost of the fog, meanwhile the temperature control accuracy is also restricted. In this paper, a temperature compensation model based on optical fiber is proposed and the corresponding experimental method is designed. The temperature compensation of the zero deviation and scaling factor of the gyroscope and accelerometer is compensated. The temperature model is accurate and effective and beneficial for compensation the accelerometer and gyroscope zero bias and scale factor caused by the temperature change. The purpose of improving the navigation accuracy of the inertial navigation system is achieved.