Scattered field data collection in multi-static/ multi-frequency radar imaging

Maisto, Maria Antonia; Masoodi, Mehdi; Solimene, Raffaele

doi:10.1109/antem51107.2021.9518809

Cited by 1 publication

(2 citation statements)

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“…The integral in ( 44) is exactly the same as the integral in (10). Hence, if condition (57) for the absence of stationary point is satisfied, the kernel of 𝐿 𝑖 𝐿 𝑖 † can be evaluated with the same asymptotic approach shown in section III.…”

Section: Extension Of the Approach To The Near Field Intensitymentioning

confidence: 99%

“…Field sampling is a relevant research topic arising in antenna characterization [1]- [5], inverse source [6]- [9], imaging problems [10]- [14], etc. In particular, sampling methods employing a non-redundant number of field measurements are gaining an ever-increasing interest since they allow to save time in the field probing which is dominated by the mechanical scanning.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dimension and Sampling of the Near-Field and Its Intensity Over Curves

Leone

Moretta

Pierri

2022

IEEE Open J. Antennas Propag.

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The paper addresses the question of efficiently sampling the near field and its intensity over an arbitrary curved line. It aims at finding the minimum number of measurements and their position for discretizing the near field and its square amplitude without loss of information and follows a common approach for both the radiation operator and the correspondent lifting operator. A scalar geometry is examined for both electric and magnetic current sources. At first, the singular values of the radiation / lifting operator are evaluated by an asymptotic approach and a change of variables which lead to an operator with a widely investigated spectrum. As the number of relevant singular values is available in closed form, the dimensions of the near field and its intensity over the curve are found. Next, starting from a sampling expansion of the pertinent left singular functions, a non-redundant sampling representation of the near field and its square amplitude is provided. Some numerical results confirm the analysis. The results may be of great interest especially in antenna testing by near field data (both standard and phaseless) with an unconventional field scanning system as, for instance, an UAV mounted probe.

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Section: Extension Of the Approach To The Near Field Intensitymentioning

confidence: 99%