Basic study of novel orbit determination system using VLBI technology by clustered small-size ground stations

在这项研究中，提出了一种新的基于甚长基线干涉测量(VLBI)的定轨系统，通过集群的小型地面站对低地球轨道上的卫星进行观测。首先，利用现有的射电干涉仪对低轨卫星进行观测，研究了有效的观测数据采集和分析技术。其次，搭建了小型地面站，通过对实际观测数据的分析，对其接收无线电信号的能力进行了评估。通过这些工作，为未来的网络化观测系统奠定了基础。

In this research, novel orbit determination system using VLBI (Very Long Baseline Interferometry) is suggested, in which satellites on low earth orbits are observed by clustered small-size ground stations. Firstly, LEO satellites are observed by using existing radio interferometer, and efficient technique of collecting and analyzing observations are studied. Secondly, constructing a small-size ground station, the ability of receiving radio signals is evaluated by analyzing the real observations. Through these works, a basic technology toward a future networked observation system is established.