PHYSICAL OPTICS INVERSE DIFFRACTION

被引：122

作者：

LEWIS, RM

机构：

[1] Courant Institute of Mathematical Sciences, New York University, New York, N.Y.

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1969年 / AP17卷 / 03期

关键词：

D O I：

10.1109/TAP.1969.1139417

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A general method for solving the inverse diffraction problem is presented. It is based on an identity of Bojarski which states that γ(x) and Γ(p) are a Fourier transform pair. Here γ(x) is the characteristic function of the target (γ-1 inside the target, γ = 0 outside), p = (2ω/c)J, ω is the frequency, J is a unit vector specifying the aspect, and r(p) can be obtained by measurement of the backscattered electromagnetic far field at frequency ω = (c/2)|p| and aspect J = |p| -lp. If data is obtained in any subset D of p space, the method yields partial or complete information about the target geometry. It is used to rederive earlier results very simply and to obtain a significant new solution, in which the target geometry is completely determined using frequencies only in a practical frequency band and aspects in a narrow cone. Copyright © 1969 by The Institute of Electrical and Electronics Engineers, Inc.

引用

页码：308 / &