基于飞行体间精确测距的动态相对定位方法

Dynamic relative positioning method based on the accuracy range information between airbornes

飞行体间的精确相对定位是实现飞行体协同工作的重要技术基础。提出了一种将飞行体惯导信息与相对距离测量信息相结合、实现两飞行体间精确动态相对定位的算法。首先利用较为精确的相对距离测量信息对两飞行体惯导系统的相对误差进行单次修正,提高了两飞行体间的单次相对定位精度。然后,利用相对距离信息进行相对机动状态的检测,并根据检测结果对状态滤波模型进行选择和切换,实现飞行体间的动态相对定位。仿真结果表明,本算法具有较高的相对定位精度和稳定性。

Under the cooperation of multi-airborne, the precise of relative position between two-airborne is the basic of cooperation work. This paper presents a kind of dynamic accuracy positioning algorithm by the inertia navigation information and accuracy relative range information between two airborne. Firstly, the relative ranging measurement and the inertia navigation information are combined to modify the relative error of inertia navigation systems for improving the accuracy of relative positioning. Then the relative ranging measurement is also employed to achieve the detection of the relative maneuvering state. Based on the results of maneuvering detection, the corresponding state model is chosen to provide the dynamic positioning between two airbornes. The simulation results show the good performance of the algorithm in the position accuracy and computation stability.