Optical tracking systems typically trade off between astrometric precision and field of view. In this work, we showcase a networked approach to optical tracking using very wide field-of-view imagers that have relatively low astrometric precision on the scheduled OSIRIS-REx slingshot manoeuvre around Earth on 22 Sep 2017. As part of a trajectory designed to get OSIRIS-REx to NEO 101955 Bennu, this flyby event was viewed from 13 remote sensors spread across Australia and New Zealand to promote triangulatable observations. Each observatory in this portable network was constructed to be as lightweight and portable as possible, with hardware based off the successful design of the Desert Fireball Network. Over a 4-h collection window, we gathered 15 439 images of the night sky in the predicted direction of the OSIRIS-REx spacecraft. Using a specially developed streak detection and orbit determination data pipeline, we detected 2 090 line-of-sight observations. Our fitted orbit was determined to be within about 10 km of orbital telemetry along the observed 109 262 km length of OSIRIS-REx trajectory, and thus demonstrating the impressive capability of a networked approach to Space Surveillance and Tracking.

中文翻译：

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从地面传感器网络重建 OSIRIS-REx 弹弓机动

光学跟踪系统通常在天体测量精度和视场之间进行权衡。在这项工作中，我们展示了一种使用非常宽视场成像仪的网络化光学跟踪方法，这些成像仪在 2017 年 9 月 22 日预定的 OSIRIS-REx 弹弓机动绕地球飞行时天体测量精度相对较低。作为旨在获得OSIRIS-REx 到 NEO 101955 Bennu，这个飞越事件是从分布在澳大利亚和新西兰的 13 个遥感器观察到的，以促进三角观测。这个便携式网络中的每个天文台都尽可能轻巧便携，硬件基于沙漠火球网络的成功设计。在 4 小时的收集窗口中，我们在 OSIRIS-REx 航天器的预测方向上收集了 15 439 张夜空图像。使用专门开发的条纹检测和轨道确定数据管道，我们检测到 2 090 次视线观测。我们的拟合轨道被确定在沿观测到的 109 262 公里长的 OSIRIS-REx 轨迹的轨道遥测范围内约 10 公里，从而展示了空间监视和跟踪网络方法的令人印象深刻的能力。