论文标题
使用默奇森广场阵列的空间情境意识的非连接无源雷达技术的开发
The Development of Non-coherent Passive Radar Techniques for Space Situational Awareness with the Murchison Widefield Array
论文作者
论文摘要
近几十年来，地球轨道中活跃和非活动卫星的数量已大大增加，需要开发新型的监视技术来监视和跟踪它们。在本文中，我们建立在以前使用Murchison Wideffield阵列（MWA）进行的非连锁雷达空间监视示范的基础上。我们开发了动态信号与噪声比频谱（DSNR）的概念，以隔离感兴趣的信号（轨道中对象的FM传输的反射），并有效地将它们与直接路径接收事件区分开来。我们以这种方式检测和跟踪Alouette-2，Alos，Ukube-1，国际空间站和Duchifat-1。我们还使用这些技术确定了从duchifat-1和ukube-1的频带外传输，这表明了MWA寻找来自卫星的伪造传播的能力。我们确定了一些卫星的分类轨道参数所预测的位置的偏移，这表明了将MWA用于卫星目录维护的潜力。这些结果证明了MWA在空间情境意识中的能力，我们描述了该领域的未来工作。
The number of active and non active satellites in Earth orbit has dramatically increased in recent decades, requiring the development of novel surveillance techniques to monitor and track them. In this paper, we build upon previous non-coherent passive radar space surveillance demonstrations undertaken using the Murchison Widefield Array (MWA). We develop the concept of the Dynamic Signal to Noise Ratio Spectrum (DSNRS) in order to isolate signals of interest (reflections of FM transmissions of objects in orbit) and efficiently differentiate them from direct path reception events. We detect and track Alouette-2, ALOS, UKube-1, the International Space Station, and Duchifat-1 in this manner. We also identified out-of-band transmissions from Duchifat-1 and UKube-1 using these techniques, demonstrating the MWA's capability to look for spurious transmissions from satellites. We identify an offset from the locations predicted by the cataloged orbital parameters for some of the satellites, demonstrating the potential of using MWA for satellite catalog maintenance. These results demonstrate the capability of the MWA for Space Situational Awareness and we describe future work in this area.
