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. 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. Results regarding the simulations and the retrieval analyses of the textile based metasurface are presented. She also helped in improving the database of Antenna Magus. Parameter retrieval analysis is performed by using the magnitude and phase values, which are obtained via CST Microwave Studio. From 2011 to 2013, she was with Computer Simulation Technology, India, where she held the position of Application Engineer and was responsible for technical support and benchmarks for CST Microwave Studio, cable studio, particle studio and design studio software. Both CST simulation results and RCS measurement results confirm the strong backscattering property of the designed target. In this paper a textile based-metasurface is designed to have -negative frequency band in order to reduce the radar cross section of a PEC-plate. 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. This can capture images and help to identify the guilty. by computing Radar Cross Section (RCS) measurements for different angles of the missile. Embedded in the same CST user interface, CST EMS features a variety of solver module to tackle electrostatics, magnetostatics, current flow and low frequency problems, and can be coupled to other CST STUDIO SUITE® modules for charged particle and multiphysics simulations. The absorptance above 90 over a wide frequency range of 5.315 GHz can be achieved through topology optimization combined with a genetic algorithm (GA). Tools used : CST Microwave Studio, MATLAB. CST EM STUDIO® (CST EMS) is dedicated to the simulation of static and low frequency devices. We realize a strong backscattering homogeneous region with a known backscattering coefficient in SAR images by utilizing designed metal grids. A conformal metamaterial absorber with simultaneous optical transparency and broadband absorption is proposed in this paper. 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.