Alexander Serrano, Alexander Kobsa, Faruk Uysal, Delphine Cerutti-Maori, Selenia Ghio, Andrew Kintz, Robert L. Morrison Jr., Sarah Welch, Philip van Dorp, Gregory Hogan, Simon Garrington, Cees Bassa, Chris Saunders, Marco Martorella, Miguel Caro Cuenca, Isaac Lowe
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引用次数: 0
摘要
长基线双稳态雷达系统预示着地球同步轨道及其他轨道上空间物体的灵敏度和度量精度将得到提高。射电望远镜是此类系统的理想参与者;特别是,它们通常具有大口径、低噪音、稳定的同步时钟。将射电望远镜与高功率雷达配对使用可为空间领域感知创造新的方法。本文介绍了利用美国 Millstone Hill 雷达、德国跟踪和成像雷达、英国增强型多元素遥联干涉仪网络阵列的多个接收器以及荷兰 Westerbork 综合射电望远镜进行的长基线双稳态测量。作者是由北约科学技术组织传感器和电子技术小组(SET-293)组成的研究工作组,他们对真实的在轨翻滚火箭体进行了新颖的双静态和单静态雷达成像实验。这些在近地球同步轨道上对翻滚物体进行的实验成功地展示了先进的双向多普勒特性,包括不同的成像几何形状。对翻滚目标进行专门的多普勒处理,如多普勒超脉冲算法,可实现高保真旋转周期估计和确定最小目标尺寸。
Long baseline bistatic radar imaging of tumbling space objects for enhancing space domain awareness
Long baseline bistatic radar systems herald enhanced sensitivity and metric accuracy for space objects in geosynchronous orbits and beyond. Radio telescopes are ideal participants in such a system; in particular, they often feature large apertures with low-noise temperatures and have stable, synchronised clocks. Pairing radio telescopes with high-power radars creates new methodologies for Space Domain Awareness. This paper describes long baseline bistatic measurements using the Millstone Hill Radar in the USA, the Tracking and Imaging Radar in Germany, multiple receivers of the enhanced multi-element remotely linked interferometer network array in the United Kingdom, and the Westerbork Synthesis Radio Telescope in the Netherlands. The authors, a Research Task Group formed by the NATO Science and Technology Organisation Sensors and Electronic Technology Panel (SET-293), performed novel bistatic and monostatic radar imaging experiments with real on-orbit tumbling rocket bodies. These experiments on tumbling objects at near-geosynchronous orbits highlight successful demonstrations of advanced bistatic Doppler characterisation across diverse imaging geometries. Specialised Doppler processing on tumbling targets, such as the Doppler superpulse algorithm, enables high-fidelity rotation period estimation and determination of minimum target size.
期刊介绍:
IET Radar, Sonar & Navigation covers the theory and practice of systems and signals for radar, sonar, radiolocation, navigation, and surveillance purposes, in aerospace and terrestrial applications.
Examples include advances in waveform design, clutter and detection, electronic warfare, adaptive array and superresolution methods, tracking algorithms, synthetic aperture, and target recognition techniques.