利用成像导引头修正空地导弹惯导误差研究

Research on Using Imaging Seeker to Improve INS of Air-to-ground Missile

提出在防区外发射空地导弹中制导段,使用其成像导引头修正弹载惯导的算法,算法要求导引头跟踪已知坐标的地标点,测出俯仰和偏航方向的视线角速度,使用扩展卡尔曼滤波对视线角速度和导弹的高度、速度进行信息融合。仿真结果表明这种算法具有较高的位置修正精度,可以用于空地导弹惯导的位置修正。

Puts forward a algorithm that uses the imaging sceker of stand-off air-to-ground missile to improve the inertial navigation system of the missile in the midcourse.The seeker need to track a waypoint with known position.Angular rates measured by the seeker,together with velocity and height of the missile are fused using an Extented Kalman Fil- ter.Simulation results indicates that this technique can be used to update the position of a missile's INS.