一种基于外推信息的惯导/陆基单站导航修正方案

提出了一种基于外推信息的陆基单站测距信息惯导修正方案，该方案一方面利用陆基测距系统融合捷联惯导系统（SINS）的导航信息进行惯导误差修正，充分发挥惯导系统和陆基导航系统各自的优点，进行系统间的取长补短，有效地减小导航误差；另一方面将陆基/SINS修正结果送入状态估计器求解法向速度，解算实时载体轨迹的待修正量，进而执行载体速度和方向修正，进一步提高了导弹命中精度。

A SINS/Single Land-Based Station Navigation Correction Scheme Based on Extrapolation Information

An inertial navigation correction scheme by using single land-based station distance measurement based upon the extrapolation information is proposed. On the one hand, the error correction of inertial navigation is carried out by using land-based distance measurement system and navigation information from SINS, giving full play to the advantages of the inertial navigation and the land-based distance measurement system. In this way, the system error can be reduced effectively and the precision of the system is improved. On the other hand, the corrected results from the SINS/land-based station navigation correction system are sent to the state estimator to solve the normal velocity and the amount of the real-time carrier trajectory to be corrected. And then the velocity and direction corrections of motion carrier can be performed to further improve the hitting accuracy.