The optimal design of a binaural sparse-aperture system
Sign Up to like & getrecommendations! Published in 2020 at "Results in physics"
DOI: 10.1016/j.rinp.2020.102970
Abstract: Abstract Optical sparse-aperture (OSA) can greatly improve the spatial resolution of optical system. However, its optical designs are complex. This paper proposes a binaural sparse-aperture system with a simple and symmetrical structure, which is composed… read more here.
Keywords: binaural sparse; system; aperture; aperture system ... See more keywords
Lossless imaging based on a donut-like optical sparse aperture metalens
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0146260
Abstract: The optical sparse aperture approach has been shown to have significant potential in enlarging the aperture size and enhancing the imaging resolution of metalenses. However, because of frequency loss caused by the sparsity and dispersion… read more here.
Keywords: aperture; aperture metalens; resolution; optical sparse ... See more keywords
CVAE: An Efficient and Flexible Approach for Sparse Aperture ISAR Imaging
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2023.3234432
Abstract: The use of traditional compressed sensing methods in sparse aperture inverse synthetic aperture radar (SA-ISAR) imaging suffers from high computational burdens and complicated formula derivations. To solve these problems, a complex-valued autoencoder (CVAE) architecture trained… read more here.
Keywords: cvae efficient; aperture; training set; isar imaging ... See more keywords
Qualitative Inverse Scattering for Sparse-Aperture Data Collections Using a Phase-Delay Frequency Variation Constraint
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2020.2998217
Abstract: We present a formulation of the linear sampling method (LSM) for reconstructing target shape from spatially sparse data sets. The technique compensates for a lack of spatial data by incorporating $a$ priori propagation information into… read more here.
Keywords: frequency; sparse aperture; constraint; aperture data ... See more keywords
Sparse Aperture Autofocusing and Imaging Based on Fast Sparse Bayesian Learning From Gapped Data
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2023.3249351
Abstract: Sparse aperture (SA) autofocusing and imaging is a hot research problem in the signal processing field and has been widely used. Under SA, the absence of echoes destroys the coherence between the pulses, which then… read more here.
Keywords: autofocusing imaging; aperture autofocusing; sparse aperture; sparse bayesian ... See more keywords
ISAR Imaging of Precession Target Based on Joint Constraints of Low-rank and Sparsity of Tensor
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2023.3279256
Abstract: Precession is a typical form of micromotion that can bring about complex and time-varying Doppler modulation. The range instantaneous Doppler (RID) method, which uses time–frequency analysis instead of the Fourier transform to describe the time-varying… read more here.
Keywords: precession; isar; precession target; sparse aperture ... See more keywords
Demonstration of a Fizeau Directly-Imaging Sparse-Aperture Telescope with Pointing and Tracking Capabilities
Sign Up to like & getrecommendations! Published in 2023 at "Micromachines"
DOI: 10.3390/mi14030569
Abstract: At present, the majority of sparse-aperture telescopes (SATs) are unable to observe moving targets. In this paper, we describe the construction of and present the results obtained using a Fizeau directly-imaging sparse-aperture telescope (FDISAT) that… read more here.
Keywords: fizeau directly; pointing tracking; moving targets; sparse aperture ... See more keywords