基于捷联稳定的低成本动中通天线设计

Design of In-motion antenna at Low Cost based on strapdown stabilization

针对MEMS惯导器件精度差、无法完成寻北以及漂移速度快的缺点,引进GPS/北斗速度信息,通过卡尔曼滤波算法进行误差估计,实现了惯导姿态的稳定输出。在捷联稳定的基础上,叠加主面圆锥扫描,利用同步卫星信标进一步进行误差修正。通过实验验证,该方法能够在大动态情况下完成天线的稳定跟踪。

Aiming at the shortcomings of the precision of MEMS inertial navigation devices,such as the difficulty of seeking the north and the fast drift,the GPS/BDS velocity information is introduced and the Kalman filter algorithm is used to estimate the error for the stable output of inertial navigation.On the basis of strapdown stabilization,the scanning is superimposed and the error correction is carried out by using the synchronous satellite beacon.The experimental results show that the proposed method can achieve stable tracking of the antenna under large dynamic conditions.