中文摘要：

针对我国未来自主金星探测活动中的测量与导航实施问题,重点研究了地基测定轨系统的设计与实现,阐述了测距、测速和甚长基线干涉测量等能力,提出了基于我国金星探测测定轨系统设计方案,建立了高精度测量模型和定轨策略,并完成了软件实现.利用与欧空局联合开展的金星快车探测器跟踪试验,对该系统进行了初步验证,实测数据定轨结果与欧空局事后精密轨道的位置偏差优于485m,速度偏差优于5.5 cm/s.试验结果验证了该系统的数据处理和轨道计算能力达到欧空局金星快车探测器同等水平,初步检验了该系统测量数据处理和轨道确定部分的正确性、有效性,可为后续我国自主金星探测提供测定轨技术支持.

英文摘要：

Ground-based orbit measurement and determination system is designed for implementation of measurement and navigation for China~s independent Venus exploration missions. Capabilities of the system in ranging, Doppler and VLBI （Very Long Baseline Interferometry） measurement are illustrated. A high-accuracy measurement model and orbit determination strategies are developed and software implementation is done for the system. Through coop- eration with European Space Agency, system ability has been preliminarily validated by experimental tracking of Ve- nus Express. Compared with post-orbit-determined ephemeris of European Space Agency, the position bias of orbit determination based on measured data is less than 485 m and the velocity bias is%5.5 cm/s. The results show that capabilities of orbit determination and data processing for the system have reached the same level of Venus Express in European Space Agency. The validity and efficiency of the subsystems are verified to prove that the system will be able to provide support to China＇s Venus missions in the near future.