舰载机惯导系统大方位失准角传递对准建模与仿真

Transfer Alignment of Carrier-Based Aircraft Inertial Navigation System

摘要:

为解决舰载机惯导系统在大方位失准角条件下的初始对准问题,建立舰载机惯导系统传递对准误差模型。该模型通过载舰坐标系与舰载机标称坐标系之间方向余弦矩阵,将载舰坐标系与实际舰载机坐标系之间的大方位失准角问题,转化为舰载机标称坐标系与实际舰载机坐标系间的小方位失准角问题,建立了舰载机传递对准的线性化数学模型,并采用“速度”匹配法建立了传递对准滤波器模型,利用轨迹发生器对模型进行仿真验证。

Abstract:

In order to solve the initial alignment problem of carrier-based aircraft under the large azimuth misalignment condition, the error model of transfer alignment of carrier-based aircraft inertial navigation system was built in this paper. This model transferred large azimuth misalignment angle problem between aircraft coordinate and aircraft real coordinate cosine matrix into small azimuth misalignment angle problem between aircraft nominal coordinate and aircraft real coordinate, the linearization of error model was given and simulated via velocity matching method. The simulation result proved the validity and feasibility of the model.