Enhanced Narrow-band radar imaging of rotating objects: Application to Long Baseline Bistatic Radar (LBBR) for Space Domain Awareness (SDA)
conference paper
This paper explores spectral enhancement techniques for Doppler Tomography (DT) and Doppler Back Projection (DBP)
in order to achieve improved 2D imaging of rotating space objects observed using bistatic radar. DT and DBP are utilized
in narrowband radar systems for imaging targets rotating about single and multiple axes, respectively. However,
the limited range information, the small angular displacement for coherent computations and additional rotations in the
targets lead to less detailed 2D images. To address this limitation, we investigate spectral enhancement methods to obtain
sharper images, enabling better Space Domain Awareness (SDA). The paper provides an introduction to key concepts
such as bistatic geometry, signal modeling for rotating targets, and the processing sequence. This sequence encompasses
preprocessing steps, the implementation of DT/DBP techniques, and a thorough consideration of resolution-related factors.
Each technique is closely associated with specific image enhancement approaches, accompanied by a detailed
analysis of their advantages and disadvantages. The effectiveness of these enhancements is quantitatively evaluated using
performance metrics, and practical validation is demonstrated through real-world measurements presented in the results
section
in order to achieve improved 2D imaging of rotating space objects observed using bistatic radar. DT and DBP are utilized
in narrowband radar systems for imaging targets rotating about single and multiple axes, respectively. However,
the limited range information, the small angular displacement for coherent computations and additional rotations in the
targets lead to less detailed 2D images. To address this limitation, we investigate spectral enhancement methods to obtain
sharper images, enabling better Space Domain Awareness (SDA). The paper provides an introduction to key concepts
such as bistatic geometry, signal modeling for rotating targets, and the processing sequence. This sequence encompasses
preprocessing steps, the implementation of DT/DBP techniques, and a thorough consideration of resolution-related factors.
Each technique is closely associated with specific image enhancement approaches, accompanied by a detailed
analysis of their advantages and disadvantages. The effectiveness of these enhancements is quantitatively evaluated using
performance metrics, and practical validation is demonstrated through real-world measurements presented in the results
section
TNO Identifier
1008492
Source title
EUSAR 2024 - 15th European Conference on Synthetic Aperture Radar
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