线加速度计辅助高精度稳定跟踪
Linear accelerometer-assisted high accurate stabilizing and tracking
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摘要: 介绍了在运动基座条件下捕获、跟踪和瞄准系统的复合轴惯性视轴稳定方案及实验室演示验证实验。使用动力调谐速率陀螺测量惯性角速率稳定转台，实现大动态范围的粗稳定，使用线加速度计测量惯性姿态角稳定视轴基准，实现小动态范围的精稳定。使用视轴基准稳定误差与视轴基准平台相对其基座的转角合成粗稳定位置误差的方式，实现粗稳定和精稳定的级联。实验结果表明，复合轴稳定方案可以实现(″)级稳定精度。Abstract: Scheme and laboratory demonstration test of composite axes inertial line of sight stabilization of acquisition, tracking and pointing system on moving base are introduced. Inertial angular rate measured by dynamically tuned gyroscope is used to realize bed coarse stabilization in big range and inertial angular position measured by linear accelerometers is used to realize line of sight reference fine stabilization in small range. The coarse stabilization error is composed with line of sight reference stabilization error and the relative error between line of sight reference and its base. Test results show that an arcsecond stabilization accuracy can be acquired with composite axes stabilization scheme．
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