近场散射测量扫描范围及数据处理方法研究

Study on scanning area and data processing method in near field scattering measurement

根据双站近场散射测量的基本原理，以二维圆柱作为待测目标，对双站近场散射测量进行了计算机模拟。研究了有限扫描面与数据处理方式对双站近场散射测量结果的影响，总结了不同尺寸的目标所需的扫描面宽度、扫描面与目标的距离、可信角域及其测试精度间的关系，给出了一些有用的结果，证实了一种有效而可靠的近场数据处理方式，提出并论证了一条选择扫描面宽度的原则。

The basic principle of bistatic near field scattering measurement is presented. With a two dimensional cylinder as a target to be measured, bistatic near field scattering measurement is computer simulated. The influence of finite scanning plane and data processing method on the results of bistatic near field scattering measurement is treated. The relation of the scanning plane width required by targets with different sizes, the distance between the scanning plane and the target, reliable angle range and measurement precision is summarized and some useful results are given. An effective and reliable near field data processing method is confirmed and a principle on choosing the width of the scanning plane is presented and proved.