An analysis of near-field scattering characteristics of rough target: From the perspective of bidirectional reflectance distribution function based on LS-SVM

作者：Li Ning; Zhang Min^*; Nie Ding; Jiang Wangqiang

来源：Progress in Electromagnetics Research M, 2014, 39: 1-9.

DOI：10.2528/pierm14050801

• Bidirectional reflectance distribution functions
• Near-field scattering

The near-field scattering characteristics of rough target are analyzed by using a revised bidirectional reflectance distribution BRDF) of a rough surface based on least squares support vector machine (LS-SVM). The revised BRDF is more reliable in a larger range of incident angles and scattering angles that beyond the scope of experimental measurements. The basic principle of LS-SVM and the modeling process are firstly introduced in detail. Then the comparison among LS-SVM, the back propagation neural network (BPNN) and the measured data is carried out. The results show that the LS-SVM model has better integrative performance, stronger generalization ability and higher precision. On this basis, the calculation of the near-field radar cross section (RCS) of a complex target is safely performed and analyzed. The method proposed is helpful to better investigate the near-field scattering characteristics of rough target.

• 出版日期2014
• 单位西安电子科技大学