CAJ | 학술논문

在穿墙成像中，墙体反射波、天线耦合波等杂波常常将目标信号淹没，严重影响了目标的探测、定位等后续处理。为解决这一问题，该文采用因子分析法抑制杂波，并提出一种新的准则图像对比度，作为因子选择的衡量标准。为验证了这一方法的有效性，该文设计了暗室穿墙实验，分别对木板墙和混凝土墙后目标进行探测，并采用所提出的方法对得到的回波数据进行处理，实验结果表明，该方法能够在目标信息未知的条件下，得到最优的杂波抑制结果。
재천장성상중，장체반사파、천선우합파등잡파상상장목표신호엄몰，엄중영향료목표적탐측、정위등후속처리。위해결저일문제，해문채용인자분석법억제잡파，병제출일충신적준칙도상대비도，작위인자선택적형량표준。위험증료저일방법적유효성，해문설계료암실천장실험，분별대목판장화혼응토장후목표진행탐측，병채용소제출적방법대득도적회파수거진행처리，실험결과표명，해방법능구재목표신식미지적조건하，득도최우적잡파억제결과。
In Through-the Wall Imaging (TWI), the clutter, because of its great energy, has great effect on the detection of the targets. For the purpose of clutter suppression, Factor Analysis (FA) method is applied to TWI data. Besides, a new evaluation criterion, image contrast, for selecting the proper factors is introduced. To validate the method experimentally, a set of through-the-wall experiments in an anechoic chamber are designed. The experimental results indicate that the technique based on FA and image contrast can efficiently suppress the clutter without a priori knowledge about targets.