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分析并设计了一种将带双轴调整机构的棱镜作为基准棱镜的方位引出方法,并基于此提出了惯导缓冲基座复位精度试验方案。首先,根据直角棱镜作基准棱镜时放置位置对方位引出的影响,设计可双轴调整机构;然后,从双轴调整机构出发,利用坐标变换和矢量形式的棱镜反射公式推导了放置误差造成的方位引出误差,根据误差公式设计了试验方案:最后,分析与估算了方位引出精度,结果表明:此方案在控制经纬仪望远镜的俯仰角小于15°时,方位引出的均方误差小于5″。
A method of orientation extraction with a prism with biaxial adjustment mechanism as the reference prism is analyzed and designed. Based on this, a test scheme for the reset accuracy of the inertial navigation buffer base is proposed. Firstly, the biaxial adjustment mechanism is designed according to the influence of the position of the rectangular prism as the reference prism on the orientation. Then, the orientation caused by the placement error is deduced from the biaxial adjustment mechanism using the coordinate transformation and the vectorial prism reflection formula The results show that when the pitch of the theodolite is less than 15 °, the mean squared error of the azimuth is less than 5 ".