| Radar Cross-Section Measurement Using the Near-Field Single-Frequency Angular-Diversity Technique |
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| 作者单位： | Millimeter Wave Technique Laboratory, Department of Electronic Engineering,Nanjing University of Science and Technology, 210094, P. R. China
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| 基金项目： | the National Natural Science Foundation of China. |
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| 摘 要： | 1.INTaODUCTIONRadarcross-sectionisaphysicalparametertorepreseDttheabilityofatargettoscsttertheelectromagneticwavefromaradar.IntheoreticalandexperimeDtalstudies,itisknownthatthehighfrequencyscatteringfromanelectricallylargetargetcanbewellapproximatelymodeledasifitisemanatedfromadiscretesetofpointsonthetargetcalledscatteringcentersl,ZI.Thescatteringcentermodelisconceptuallyconciseanditprovidesasparseabstractionoftheactualcomplextargetfornumerousapplications.ForRCSmeasuremellt,asphericalw…
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Radar Cross-Section Measurement Using the Near-Field Single-Frequency Angular-Diversity Technique |
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| Authors: | Ye Xiaodong Fang Dagang SHENG Weixing |
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| Abstract: | Radar cross-section (RCS) measurement with the near-field electromagnetic wave illumination of a target has been proved to be practical. The existing methods employ the multiplefrequency angular-diversity (MFAD) technique, whereas this paper considers the single-frequency angular-diversity (SFAD) technique. The paper takes into account the scattering center modeling and the limitation of higher sidelobes in reconstructing images in the SFAD technique compared to the MFAD technique. A method of combining the SFAD technique with the RELAX approach is presented for the high-resolution extraction of scattering centers on a target. The proposed method offers an excellent RCS recovery, which is validated by numerical results. |
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| Keywords: | Radar cross-section Electromagnetic scattering Scattering center Target extraction Relaxation methods |
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