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UPF 在探测器自主导航中的应用The Use of Uns
张伟
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利用星敏感器和地平仪测量“星光仰角”，进行自主导航方案设计。将UPF（Unscented
Particle Filter）方法引入导航方案，利用UKF（Unscented Kalman Filter）获得重要性采样函数的同时，通过重采样解决了粒子耗尽问题，改善了系统性能。并与标准粒子滤波方法相比较，通过仿真验证了该方法的优越性。
关键词：自主导航；UPF；星光仰角
Abstract:An autonomous navigation scheme is designed by using the star sensor and horizontal instrument to observe the elevation angle of star.UPF(Unscented Particle Filter) imported into the navigation scheme uses UKF(Unscented Kalman Filter) to generate importance distribution function, at the same time,it resolves the problem of particles exhausted by using re-sampling so that the capability of the system is improved. The advantage of the algorithm is showed by the simulation through compared with the Particle Filter.
Key words: autonomous navigation; UPF; elevation angle of star
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