A Study on RCS Characterization for Space-borne Plane SAR
It is one of the main tasks of the space situational awareness to estimate the structure of space-borne SAR satellite,espe-cially the estimation of array element distance.On the study of microstrip antenna SAR,the electromagnetic simulation and the es-timation of array element distance in slotted waveguide antenna SAR satellite are carried out.Based on the spatial invariance of RCS at different tilt angles of SAR satellites,using the sphere space distance calculation method,we realize the element distance estimation with the unknown inclination angle.The measured data of multiple SAR satellites shows that the method is reliable and feasible,the RCS identity code is helpful to improve the identification and fine structure estimation ability of SAR satellite.
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