Research on experimental measurement of regular objects bistatic LRCS and scaling relations

Abstract

In this paper, the bistatic LRCS of Teflon spheres of different size is measured by laser scattering automatic measurement system in laboratory and bistatic LRCS measurement system outdoor respectively, and the bistatic LRCS of standard Lambert spheres of the same size is calculated. The experimental results show that Teflon sphere has obvious coherent scattering when the bistatic angle is smaller than 10°. The experimental results coincide with the theoretical calculation when the bistatic angle is bigger than 10°. Scaling relations of the bistatic LRCS is also studied in experiment, the relative error between the experimental results of scaling relations and the theoretical calculation results of scaling relations of the same size Lambert sphere is smaller than 10 percent, which satisfies the requirements of Engineering. It is demonstrated that outdoor measurement method has valuable usage in engineering practice to measure the bistatic LRCS of large object.