![]() Experimental results demonstrate the strong backscattering property and homogeneity of the realized regions. This paper also discusses the accuracy of physical optics (PO) approximation in measuring the far field monostatic radar cross section of different simple objects varying in size using. The spaceborne experiments have been carried out by the TerraSAR-X sensor over the test field in two flight campaigns in X-band with VV polarization. This paper describes the Radar Cross Section (RCS) analysis and prediction for simple target shapes such as circular flat plate, triangular flat plate, ellipsoid, sphere, ellipsoid, truncated cone and cylinder. In addition, by utilizing the designed target, we realize a test field consisting of several strong backscattering homogeneous regions with different sizes at Shanghai Jiao Tong University, Shanghai, China. ![]() Both CST simulation results and RCS measurement results confirm the strong backscattering property of the designed target. Then, the backscattering coefficient of the designed metal grid is simulated in the computer simulation technology (CST) microwave studio and measured by a radar cross-section (RCS) measurement instrument in a microwave anechoic chamber. ![]() First, we propose a manmade grid-structure target and realize it with aluminum in practice, which is named the metal grid. We realize a strong backscattering homogeneous region with a known backscattering coefficient in SAR images by utilizing designed metal grids. The strong backscattering homogeneous region, i.e., a uniform region with a high and constant backscattering coefficient, is important for synthetic aperture radar (SAR) image quality assessment and SAR radiometric calibration, which, however, is difficult to realize in practice with a known backscattering coefficient. ![]()
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