UPF 在探測(cè)器自主導(dǎo)航中的應(yīng)用The Use of Uns

利用星敏感器和地平儀測(cè)量“星光仰角”，進(jìn)行自主導(dǎo)航方案設(shè)計(jì)。將UPF（Unscented
Particle Filter）方法引入導(dǎo)航方案，利用UKF（Unscented Kalman Filter）獲得重要性采樣函數(shù)的同時(shí)，通過重采樣解決了粒子耗盡問題，改善了系統(tǒng)性能。并與標(biāo)準(zhǔn)粒子濾波方法相比較，通過仿真驗(yàn)證了該方法的優(yōu)越性。
關(guān)鍵詞：自主導(dǎo)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