利用地磁场测量的小卫星自主导航设计

Autonomous Navigation Design for Small Satellite Using Earth Magnetic Field Measurement

地磁场矢量是卫星所在位置的函数 ,通过对地磁场的测量 ,即可实现对近地小卫星的自主导航。本文采用卡尔曼滤波技术设计了小卫星基于地磁场测量的导航方法 ,在采用地磁场模型时选取磁偶极子模型 ,以此使设计算法的计算量大大减少。最后利用数字仿真验证了系统性能。

Magnetic field vector is a function of the position where the satellite stays. Thus autonomous navigation for small satellite can be achieved by measuring the magnetic field vector. In this paper autonomous navigation method for small satellite is designed by using Kalman filtering technology based on magnetic field measurement. Magnetic dipole model is chosen and thus the computation reduces a lot. Finally numerical simulations evaluate the system performance.