Microwave measurement technique for evaluating the polarization of the electromagnetic field within a reverberating chamber

Sorrentino, Antonio; Gil, José J.; Migliaccio, Maurizio; Ferrara, Giuseppe; Cappa, Sergio

doi:10.23919/ropaces.2017.7916365

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…In [16], the K-factor has been used in order to extract the line-of-sight signal between the transmitting and receiving antennas from the scattered component associated with reflections and diffractions on RC walls. This direct path component has then been used to extract the RCS of a target [17]. This method is relevant to estimate high K-factor and therefore high RCS magnitude, but the RCS dynamic range is limited [18].…”

Section: Introductionmentioning

confidence: 99%

Advanced Analysis of Radar Cross-section Measurements in Reverberation Environments

Charlo,

Méric,

Sarrazin

et al. 2024

PIER B

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Reverberation chambers (RCs) were recently reported as a low-cost alternative to anechoic chambers (ACs) to perform radar cross-section (RCS) pattern measurements. The method consists of using transmitting and receiving antennas pointing towards a target under test placed on a rotating mast. As a classical RCS characterization, the echo signal is analysed based on two measurements with and without the target in the RC. In the hypothesis of an ideal diffuse field generated in the RC, this signal difference appears as the echo signal hidden in a Gaussian noise. In case of a point-like backscattering target, observing this signal over a given frequency bandwidth allows the identification of the target response as a sinusoidal signal over this bandwidth whose period is related to the antennatarget distance measured from the measurement calibration plane positions. Therefore, the extraction of the magnitude of this sinusoidal signal requires a proper estimation of this distance. Furthermore, a sinusoidal regression processing relies on the approximation of a constant envelope over the selected frequency bandwidth, imposing some restrictions. In this paper, we introduce a two-step method that consists in identifying the most appropriate distance according to the target's orientation before estimating the magnitude of the sinusoidal signal. We highlight the improvement of RCS estimation on a point-like back-scattering target compared to the one-step procedure applied so far. In addition, it is shown that the analysis performed regarding the estimated distance provides a physical insight into the position of the equivalent backscattering point.

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Section: Introductionmentioning

confidence: 99%

Advanced Analysis of Radar Cross-section Measurements in Reverberation Environments

Charlo,

Méric,

Sarrazin

et al. 2024

PIER B

View full text Add to dashboard Cite

show abstract

“…In [16], the K-factor has been used in order to extract the line-of-sight signal between the transmitting and the receiving antennas from the scattered component associated to reflections and diffractions on RC walls. This direct path component has then been used to extract the RCS of a target [17]. This method is relevant to estimate high K-factor and therefore high RCS magnitude but the RCS dynamic range is limited [18].…”

Section: Introductionmentioning

confidence: 99%

Quasi-monostatic Radar Cross-Section Measurement in Reverberation Chamber

Charlo

Besnier

Méric

2022

2021 18th European Radar Conference (EuRAD)

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Reverberation chambers (RCs) were recently reported as a low-cost alternative to anechoic chambers (ACs) to perform radar cross-section (RCS) pattern measurements. The method consists of using transmitting and receiving antennas pointing towards a target under test placed on a rotating mast. As a classical RCS characterization, the echo signal is analysed based on two measurements with and without the target in the RC. In the hypothesis of an ideal diffuse field generated in the RC, this signal difference appears as the echo signal hidden in a Gaussian noise. In case of a point-like backscattering target, observing this signal over a given frequency bandwidth allows the identification of the target response as a sinusoidal signal over this bandwidth whose period is related to the antenna-target distance measured from the measurement calibration plane positions. Therefore, the extraction of the magnitude of this sinusoidal signal requires a proper estimation of this distance. Furthermore, a sinusoidal regression processing relies on the approximation of a constant envelope over the selected frequency bandwidth, imposing some restrictions. In this paper, we introduce a two-step method that consists in identifying the most appropriate distance according to the target's orientation before estimating the magnitude of the sinusoidal signal. We highlight improvement of RCS estimation on a point-like back-scattering target compared to the one-step procedure applied so far. In addition, it is shown that the analysis performed regarding the estimated distance provides a physical insight into the position of the equivalent backscattering point.

show abstract

Microwave measurement technique for evaluating the polarization of the electromagnetic field within a reverberating chamber

Cited by 2 publications

References 5 publications

Advanced Analysis of Radar Cross-section Measurements in Reverberation Environments

Advanced Analysis of Radar Cross-section Measurements in Reverberation Environments

Quasi-monostatic Radar Cross-Section Measurement in Reverberation Chamber

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