第21卷第5期 2013年5月
文章编号1004-924X(2013)05-1192-07
光学精密工程
Optics and Precision Engineering
Vol.21No.5
May2013
利用地球紫外和恒星可见光的卫星自主导航
孙俊1,2*，张世杰，李葆华1
（1.哈尔滨工业大学航天学院，黑龙江哈尔滨150001 2.上海市空间智能控制技术重点实验室，上海200233）
摘要：提出一种利用地球紫外波段和恒星可见光波段为卫星进行自主导航的方法，该导航方法利用视场1观测恒可见光波段，视场2观测地球紫外波段。在视场1利用星数感器全天球识别算法识别所有恒星星像，识别结果的光轴指向作为恒星矢量；视场2被用来对地球紫外波段轮廊成像，计算得到地心矢量在卫星本体垒标系中的方向。最后，利用卫星轨道动力学方程和扩展卡尔曼滤波器来计算卫星轨道参数。对一紫外敏感器进行的实验表明，与利用红外地平仪和恒星可见光的自主导航方法相比，该方法的位置误差由1000m减小到500m，速度误差由100m/s减小到40m/s，面且消
除了由于太阳光与地平线夹角带来的周期误差，因此，该方法具有很好的鲁棒性。关键调：自主导航；星敏感器；紫外地球敏感器；扩展卡尔受滤波
中图分类号：V241.626；V448.22
文献标识码：A
doi:10.3788/OPE.20132105.1192
Autonomousnavigationbasedon
star light and ultraviolet earth sensors
SUN Jun'.’,ZHANG Shi-jie',LIBao-hua
(1.SchoolofAstronautics，HarbinInstituteofTechnology，Harbin150001,China 2.ShanghaiAerospaceControlandEngineeringInstitute，Shanghai200233,China)
Correspondingauthor,E-mail;sunjun@hit,edu.cn
Abstract: An autonomous navigation algorithm is proposed using the sensor with functions of a star sensor and an ultraviolet earth sensor. The sensor has two Field of Views (FOVs ) named FOV1 and FOV2. The FOV1 is used for star sensor and for calculating the optical axis direction of the FOV1. The FOV2 is used for ultraviolet earth sensor and for calculating the vector of the earth.The state e quation of integrated system is established by the deduced orbit dynamic model based on orbit six ele ments and the attitude kinematic model. Then, the observed equation of integrated system is estab-lished by using the difference of the measurement value and the estimated value, and the satellite orbit parameters were calculated according to the Discrete Extend Kalman Filter(DEKF)algorithm. An ex periment on the ultraviolet sensor shows that not only the errors of satellite positions is improved from 1 o00 m to 500mand the errors for satellite velocities are improved from100 m/s to 40 m/s,but also
收稿日期：2012-11-12；修订日期：2013-02-15.
基金项目：国家863高技术研究发展计划资助项目（No.2005AA745060）