Effect of Atmospheric Propagation in RCS Predictions

Alexopoulos, Aris

doi:10.2528/pier09121509

Cited by 19 publications

(10 citation statements)

References 18 publications

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“…It is created by rapid anomalous changes in the vertical atmospheric temperature and humidity gradients immediately above water masses [1,2]. Many nonstandard propagation events can be induced by this ducting condition, including over-the-horizon detection, radar holes where the radar is effectively blind and positioning failure [3][4][5]. Accordingly, understanding the atmospheric environment is essential in evaluating and predicting the performance of maritime radar and communication systems.…”

Section: Introductionmentioning

confidence: 99%

Evaporation Duct Retrieval Using Changes in Radar Sea Clutter Power Versus Receiving Height

Zhang¹,

Wu²,

Zhang³

et al. 2012

PIER

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Abstract-A method for retrieving evaporation duct height (EDH) is introduced in this paper. The proposed technique employs the changes in radar sea clutter power observed at different heights as input information. It identifies the EDH associated with the modeled clutter change pattern that best matches measured change patterns. The performance of the method is evaluated in terms of RMS errors in retrieving actual EDHs that range from 0 to 40 m. The comparison of the proposed method with the conventional clutter pattern matching method shows that the former more effectively retrieves actual EDHs.

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Section: Introductionmentioning

confidence: 99%

Evaporation Duct Retrieval Using Changes in Radar Sea Clutter Power Versus Receiving Height

Zhang¹,

Wu²,

Zhang³

et al. 2012

PIER

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“…Here, F > 0 represents a convergent beam and F < 0 represents a divergent beam. Based on the extended Huygens-Fresnel principle [12][13][14][15][16][17][18][19], the propagation of the cross-spectral density of arbitrary beam can be calculated as follows…”

Section: Analysis Of Theorymentioning

confidence: 99%

Relay Propagation of Partially Coherent Cosh-Gaussian Beams in Non-Kolmogorov Turbulence

Tao¹,

Liu²,

Ma³

et al. 2012

PIER

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Abstract-The analytical formulas for the average intensity and power in the bucket of the relay propagation of partially coherent cosh-Gaussian (ChG) beams in non-Kolmogorov turbulence have been derived based on the extended Huygens-Fresnel principle. The influences of the beam parameters, relay system parameters and the non-Kolmogorov turbulence parameters on relay propagation are investigated by numerical examples. Numerical results reveal that the relay propagation of the beam is different from that in the case of Kolmogorov turbulence. It is shown that the relay propagation has advantages over direct propagation, and the relay propagation of partially coherent ChG beams depends greatly on the beam parameters, relay system and the generalized exponent α. The focusability of the beam at the target in non-Kolmogorov turbulence increases with larger inner scale, larger relay system radius, smaller outer scale, and smaller generalized structure constant. The results are useful for the practical applications of relay propagation, i.e., freespace communication.

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“…In addition, the potential application of metamaterials in stealth technology also becomes a hot topic of current research [17][18][19][20], where RCS [21][22][23][24] is the main consideration in the design of military platforms. There are two different solutions proposed for RCS reduction using metamaterials: cloaking devices [25] and metamaterial absorber.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Radar Cross Section Based on a Metasurface

Chen¹,

Cheng

Zhao³

et al. 2014

PIER

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Abstract-A metasurface for Radar Cross Section (RCS) reduction is proposed. The surface is composed of the same type of metamaterial units with different geometric dimensions, leading to various reflection phases under the incidence of plane waves. By carefully choosing the phase distributions, diffusion will be produced for the reflected waves which may redistribute the scattering energy from the surface toward all the directions, and hence it can be applied as the coating of metallic targets with ultra-low RCS. Both the simulated and experimental results have validated the proposed method.

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Effect of Atmospheric Propagation in RCS Predictions

Cited by 19 publications

References 18 publications

Evaporation Duct Retrieval Using Changes in Radar Sea Clutter Power Versus Receiving Height

Evaporation Duct Retrieval Using Changes in Radar Sea Clutter Power Versus Receiving Height

Relay Propagation of Partially Coherent Cosh-Gaussian Beams in Non-Kolmogorov Turbulence

Reduction of Radar Cross Section Based on a Metasurface

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