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分析圆锥误差在无陀螺捷联惯导系统中的特性和表现形式,针对系统应用等效旋转矢量方法不能直接提供角增量的特点,设计和优化了角增量的获取方法,利用混沌粒子群算法优化了四子样等效旋转矢量方法中等效旋转矢量计算公式系数,并通过典型圆锥误差仿真实验验证了其能更好地消除圆锥误差的影响,提高系统导航精度.
The characteristics and forms of conical errors in gyroscopeless SINS are analyzed. In view of the fact that equivalent rotary vector method can not provide angular increment directly, the method of obtaining angular increments is designed and optimized. The chaos particle swarm optimization The algorithm optimizes the coefficients of the equivalent rotation vector in the four-spline equivalent rotation vector method. The simulation results show that the algorithm can eliminate the conical error and improve the navigation accuracy.