Doppler Superpulse Processing for Improved Tomographic Characterization of Space Objects

Serrano, Alexander; Morrison, Rick L.

doi:10.23919/aces57841.2023.10114771

Cited by 3 publications

References 2 publications

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Long baseline bistatic radar imaging of tumbling space objects for enhancing space domain awareness

Serrano,

Kobsa,

Uysal

et al. 2023

IET Radar Sonar & Navi

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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.

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Long baseline bistatic radar imaging of tumbling space objects for enhancing space domain awareness

Serrano,

Kobsa,

Uysal

et al. 2023

IET Radar Sonar & Navi

Self Cite

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Large Baseline Bistatic Radar Imaging for Space Domain Awareness

Uysal,

Dorp,

Serrano

et al. 2023

2023 IEEE International Radar Conference (RADAR)

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Range-Doppler-Time Tensor Processing for Deep-Space Satellite Characterization Using Narrowband Radar

Serrano,

Capper,

Morrison

et al. 2024

Remote Sensing

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There is growing demand for the high-fidelity characterization of satellites in Geosynchronous Earth Orbit (GEO) to support Space Domain Awareness (SDA). This is particularly true for newly launched satellites, where it is necessary for satellite providers to ascertain whether components have deployed properly. Conventional wideband radar systems are capable of imaging satellites provided that (i) they have sufficient power aperture and bandwidth, and (ii) they observe enough target aspect change to generate a resolved image. While wideband radars are used routinely for characterizing satellites in Low-Earth Orbit (LEO), powerful radars with sensitivity sufficient for large GEO ranges (36,000 km or greater) are lacking. Thus, researchers often rely on more widely available high-power narrowband tracking radars for GEO characterization. In this paper, we present a novel range-Doppler-time (RDT) tensor processing technique for GEO characterization with narrowband radar. This technique encapsulates the strengths of previously proposed methods for narrowband-radar characterization at GEO, providing a generalized approach that can be applied in a variety of settings. The technique generates fully resolved 2D images of rotating GEO satellites in low-bandwidth scenarios. In cases where aspect change is limited, the technique provides detailed Doppler information for enhanced satellite status monitoring. This work presents a comprehensive quantitative analysis of the technique that considers the impact of key parameters on characterization performance. Simulated radar data, and radar data collected in a compact range on a scaled satellite model, are used to evaluate the technique.

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Doppler Superpulse Processing for Improved Tomographic Characterization of Space Objects

Cited by 3 publications

References 2 publications

Long baseline bistatic radar imaging of tumbling space objects for enhancing space domain awareness

Long baseline bistatic radar imaging of tumbling space objects for enhancing space domain awareness

Large Baseline Bistatic Radar Imaging for Space Domain Awareness

Range-Doppler-Time Tensor Processing for Deep-Space Satellite Characterization Using Narrowband Radar

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