An UWB Physical Optics Approach for Fresnel-Zone RCS Measurements on a Complex Target at Non-Normal Incidence - Archive ouverte HAL Access content directly
Journal Articles Sensors Year : 2019

An UWB Physical Optics Approach for Fresnel-Zone RCS Measurements on a Complex Target at Non-Normal Incidence

(1) , (2) , (1)
1
2

Abstract

In this paper, we propose a fast method for measuring the radar cross section of a complex target at non-normal incidences and Fresnel region antenna-to-target distances. The proposed method relies both on the physical optics approach and on averaging the field distribution over the transmitting and receiving antenna apertures. The ratio between the analytical expression of the radar cross section at far-field and Fresnel region results in a field-zone extrapolation factor. The RCS resulting from the scattering parameters measured at Fresnel region distances is then corrected with that field-zone extrapolation factor. The method is suitable to be used in a perturbed, multipath environment by applying the distance averaging technique, coupling subtraction or time gating. Our technique requires a very simple measuring configuration consisting of two horn antennas and a vector network analyzer. The experimental validation of the proposed technique demonstrates reasonable agreement with simulated radar cross section at non-normal incidence.
Fichier principal
Vignette du fichier
sensors-19-05454.pdf (17.58 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive
Loading...

Dates and versions

hal-02442753 , version 1 (16-01-2020)

Licence

Attribution - CC BY 4.0

Identifiers

Cite

I.V. Mihai, R. Tamas, A. Sharaiha. An UWB Physical Optics Approach for Fresnel-Zone RCS Measurements on a Complex Target at Non-Normal Incidence. Sensors, 2019, 19 (24), ⟨10.3390/s19245454⟩. ⟨hal-02442753⟩
32 View
50 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More