论文标题
为雷达和光学基础SST站开发数据融合概念
Developing a data fusion concept for radar and optical ground based SST station
论文作者
论文摘要
作为葡萄牙空间监视和跟踪程序(SST)计划的一部分,在Pampilhosa da Serra空间观测站(PASO)安装了跟踪雷达和双视远景望远镜系统(4.3°x 2.3°)的一部分。跟踪雷达将在低地轨道(LEO)中跟踪高达1000公里的空间碎片,同时望远镜还将具有LEO跟踪功能。本文打算讨论利用这两个传感器在同一位置的可能方法。使用两种类型的传感器,都利用了雷达测量值,这些测量值可为物体提供精确的径向速度和距离,而望远镜则可以提供更好的天空坐标测量值。通过安装雷达和光学传感器,PASO可以扩展空间碎屑的观察时间,并实时从光学和雷达证明中相关联。在暮光期间,这两个传感器都可以同时使用来快速计算狮子座对象的新TLE,从而消除了大型SST网络中站点之间数据交换所涉及的时间延迟。这个概念不会在全球多个位置使用传感器替代SST网络的需求,但是将从给定的对象段落中提供更完整的测量值,因此增加了初始轨道确定或监视给定位置的重新进入活动的附加值。 PASO将有助于开发新的解决方案,以更好地表征提高整体SST功能的对象,并构成开发和测试新的雷达和光学数据融合算法和空间碎片监测技术的理想场所。
As part of the Portuguese Space Surveillance and Tracking (SST) program, a tracking radar and a double Wide Field of View Telescope system (4.3° x 2.3°) are being installed at the Pampilhosa da Serra Space Observatory (PASO) in the centre of continental Portugal, complementing an already installed deployable optical sensor for MEO and GEO surveillance. The tracking radar will track space debris in Low Earth Orbit (LEO) up to 1000 km and at the same time the telescope will also have LEO tracking capabilities. This article intends to discuss possible ways to take advantage of having these two sensors at the same location. Using both types of sensors takes advantage of the radar measurements which give precise radial velocity and distance to the objects, while the telescope gives better sky coordinates measurements. With the installation of radar and optical sensors, PASO can extend observation time of space debris and correlate information from optical and radar provenances in real time. During twilight periods both sensors can be used simultaneously to rapidly compute new TLEs for LEO objects, eliminating the time delays involved in data exchange between sites in a large SST network. This concept will not replace the need for a SST network with sensors in multiple locations around the globe, but will provide a more complete set of measurements from a given object passage, and therefore increase the added value for initial orbit determination, or monitoring of reentry campaigns of a given location. PASO will contribute to the development of new solutions to better characterize the objects improving the overall SST capabilities and constitute a perfect site for the development and testing of new radar and optical data fusion algorithms and techniques for space debris monitoring.