飞机机身近区电磁散射建模研究

采用物理光学法和一致性几何绕射理论，分析机身各 球面波照射下的近场电磁散射特性几何绕射并建立其雷达散射截面（ＲＣＳ）数学模型，同时对于复杂机身的前部，采用面元油、即采用双三次Ｂ样条技术对机外形进行拟合，然后再用一致性几何绕射理论进行计算。种方法具有一定的可信度。

STUDY ON MATHEMATICAL MODEL OF AIRCRAFT FUSELAGE NEAR FIELD ELECTROMAGNETIC SCATTERING

This article analyzes the fuselage nearfield electromagnetic scattering characteristic under the conditions of spherical wave by the physical optics (PO) as well as uniform geometrical theory of diffraction(UTD)method, and develops the RCS mathematics model. For the front parts of the complex fuselage, this study uses the elemental cell method, i.e. firstly uses bicubic B spline techniques for fitting outer part of the fuselage, after that, makes further calculate using UTD theory