高精度光纤陀螺位置和姿态测量系统

High Accuracy FOG Positioning and Orientation System

采用国产高精度光纤陀螺技术和先进闭环误差控制算法自行研制了高精度光纤陀螺位置和姿态测量系统。惯性测量单元由一个三轴一体的光纤陀螺仪和3只石英加速度计互相正交安装组成。采用的高精度光纤陀螺稳定性全温范围内优于0.01°/h。提出一种有效的闭环误差控制算法,闭环误差控制算法可以解决GPS缺失、跳变引起的导航曲线不连续问题。与加拿大的POS AV610的跑车进行比对试验,结果表明,系统精度与加拿大Applanix公司的POS AV610精度相当。

High accuracy domestic fiber optical gyroscope technique and advanced closed-loop error control algorithm are utilized to develop a high accuracy FOG positioning and orientation system. Inertial measurement unit consists of a triaxial FOG and three orthogonal accelerometers. The bias stability of FOG in operating temperature is better than 0. 01° /h. An efficient closed-loop error control algorithm is proposed to solve the discontinuity problem caused by the outage of GPS. Field test is performed with Applanix POS AV610. It is shown that the system accuracy is equivalent with Applanix POS AV610.