短航程对象的导航误差方程及修正

NAVIGATION ERROR EQUATIONS AND IT'S CORRECTION OF SHORT RANGE MOVING OBJECTS

远程运动对象常选地平坐标系为导航系,短航程的对象可选切平面惯性坐标系为导航系。本文推导了切平面惯性系统的导航误差方程;作为应用研究进行了误差分析,建立了精度与惯导装置误差源的解析联系。由于地球自转会引入误差,本文讨论了补偿地球自转的修正方法。

Some long range moving objects usually select local level coordinate as their navigation system , but short range objects may adopt inertial coordinate of tangent plane as their navigation systems. This paper derives navigation error equations of tangent plane inertial coordinate. As an evaluation of application, the paper carries out error analysis and establishes the analytical relationship between accuracy and error sources of INS. Since the Earth's ratation causes error to the system, the paper discusses as well the correction method which would be able to compensate the Earth' s rotation.