当前位置：
X-MOL 学术
›
Adv. Astron.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Improving the Accuracy of the Martian Ephemeris Short-Term Prediction
Advances in Astronomy ( IF 1.4 ) Pub Date : 2018-07-12 , DOI: 10.1155/2018/8949242 Quan Shan 1, 2 , Peijia Li 1 , Yong Huang 1, 2 , Min Fan 3, 4 , Haitao Li 3, 4 , Xiaogong Hu 1
Advances in Astronomy ( IF 1.4 ) Pub Date : 2018-07-12 , DOI: 10.1155/2018/8949242 Quan Shan 1, 2 , Peijia Li 1 , Yong Huang 1, 2 , Min Fan 3, 4 , Haitao Li 3, 4 , Xiaogong Hu 1
Affiliation
The Chinese Mars exploration mission is planned to be launched in 2020, which includes an orbiter, a lander, and a rover. High precision Martian ephemeris is very important in Mars exploration, especially for the Martian orbit insertion and the Martian lander/rover landing. In this paper, we used simulation data to analyze the short-term prediction accuracy of the Martian ephemeris. The simulation results show that the accuracy of Mars position is expected to be better than 50 m for 180-day prediction, when 90-150 days’ range measurements are used to estimate the orbit of the Mars. Range bias affects the prediction accuracy and the arc length for estimation is limited. The prediction accuracy will improve with higher orbit, and the orbit error of probes has an obvious effect on the prediction accuracy of the Martian ephemeris.
更新日期：2018-07-12
京公网安备 11010802027423号