公开(公告)号：EP3346234A4

公开(公告)日：2018-07-18

申请号：EP16880375

申请日：2016-05-16

申请人： SHANGHAI INST OF SATELLITE ENGINEERING

发明人： ZHANG WEI ,  CHEN XIAO ,  YOU WEI ,  HUANG QINGLONG

IPC分类号： G01C21/02

CPC分类号： G01C21/02

摘要： The invention provides an autonomous navigation method of Mars probe. The method comprises the following steps: according to the position relationship of the probe in the solar system, selecting the sun, the earth and the sun, Mars as the observed objects, acquiring the angle information, and establishing the position, velocity and other navigation parameters with the extended Kalman filter (EKF). The invention has the advantages of simple principle and low system resource requirements; it is a new method of autonomous celestial navigation of the Mars probe. The method expands the spacecraft navigation means, improves the navigation ability, and can be directly applied to the future autonomous navigation mission of Mars exploration in China; therefore, it has a wide range of applications in the field of deep space exploration.

公开(公告)号：EP3293484A4

公开(公告)日：2018-05-16

申请号：EP16867581

申请日：2016-04-29

申请人： SHANGHAI INST OF SATELLITE ENGINEERING

发明人： ZHANG WEI ,  YOU WEI ,  CHEN XIAO ,  ZHANG WEI ,  DU YANG

IPC分类号： G01C21/24

CPC分类号： G01C21/24

摘要： The invention provides a navigation method for Mars capture phase based on the combination of celestial velocity measurement and ground radio. The method comprises the following steps: obtaining the distance between the probe and the ground through radio ranging of a ground station; obtaining the radial velocity between the probe and the ground station through radio Doppler velocity measurement of the ground station; obtaining the radial velocity between the probe and a star by the probe through navigation sensor for autonomous velocity measurement; obtaining the position and velocity estimations of space-ground combined navigation through the extended Kalman filter (EKF). Compared with the navigation solely relying on the terrestrial radio, the autonomous celestial observation of the probe is added in the method of the invention, so that the navigation accuracy can be effectively improved.