2-D Conductor Cross Section Reconstruction via Amplitudes of Backscattered Field in Near Regions

２－ＤＣｏｎｄｕｃｔｏｒＣｒｏｓｓＳｅｃｔｉｏｎＲｅｃｏｎｓｔｒｕｃｔｉｏｎｖｉａＡｍｐｌｉｔｕｄｅｓｏｆＢａｃｋｓｃａｔｔｅｒｅｄＦｉｅｌｄｉｎＮｅａｒＲｅｇｉｏｎｓＹｕＣｈｕｎｙａｎｇ，ＤｏｎｇＸｉａｏｌｏｎｇ＆ＷａｎｇＷｅｎｂｉｎｇＳｉｇｎａｌ...

2-D Conductor Cross Section Reconstruction via Amplitudes of Backscattered Field in Near Regions

In this paper, an improved approach is presented to reconstruct two dimensional conduc- tor profile illuminated by incident plane waves of multiple frequencies and directions via amplitudes of backscattered field in near regions. Newton-Kantorovitch algorithm is adopted to cast the non- linear coupled integral equations into linearized form, method of moment is used to transform the above linearized integral equations into matrix form, the resulting ill-posed overdetermined linear equations are solved using pseudoinverse technique based on Gram-Schedmit orthogonal procedure. Initial values are determined by solving a nonlinear least aquare error problem to establish an equivat lent circular cylinder. The effects of various parameters on reconstruction quality are discussed with numerical results and analysis.