Autonomous Navigation Method for Low-Thrust Interplanetary Vehicles

作者：Wang, Yidi; Zheng, Wei^*; Sun, Shouming; Li, Li; Tan, Xianglin

来源：Journal of Aerospace Engineering, 2016, 29(1): 04015009.

DOI：10.1061/(ASCE)AS.1943-5525.0000495

• X-ray pulsar navigation
• Low-thrust interplanetary vehicle
• Autonomous navigation
• Integrated navigation
• Data fusion

An autonomous navigation method for low-thrust interplanetary vehicle is proposed. In the proposed navigation system, one inertial navigation system (INS) is employed to continuously estimate the position and attitude of vehicle, and three X-ray sensors observing X-ray pulsars are utilized to reduce the long-term effects of the errors in the INS. In addition, a modified square-root unscented Kalman filter (MSUKF) is proposed. The MSUKF adopts a fading factor to compensate the impact of modeling error, and contains no linearization steps. The results have shown that the proposed navigation system outperforms the traditional celestial-inertial method and the MSUKF could guarantee a faster convergence compared with former proposed nonlinear filters.

• 出版日期2016-1
• 单位中国人民解放军国防科学技术大学; 中国西安卫星测控中心