CAJ | 학술논문

作为一种新型探测和定位墙后人体目标的方法，超宽带穿墙雷达在军事和民用多个领域得到了广泛的应用。由于目标信号经常被强背景噪声所淹没，为实现动目标检测，需寻求一种有效的背景相消方法以凸显动目标信号，提高动目标检测和定位的精度。在研究回波信号特点的基础上，考虑到无限冲击响应（IIR）滤波器和自适应滤波器的优点，提出采用基于IIR的自适应滤波器背景噪声相消的方法，抑制回波信号中的噪声。为验证方法的有效性，采用该方法对利用SIR20雷达收集的实测数据进行了相关处理。从结果看，该方法能有效抑制背景噪声，凸显目标信号，为目标的检测和定位奠定了良好的基础。
작위일충신형탐측화정위장후인체목표적방법，초관대천장뢰체재군사화민용다개영역득도료엄범적응용。유우목표신호경상피강배경조성소엄몰，위실현동목표검측，수심구일충유효적배경상소방법이철현동목표신호，제고동목표검측화정위적정도。재연구회파신호특점적기출상，고필도무한충격향응（IIR）려파기화자괄응려파기적우점，제출채용기우IIR적자괄응려파기배경조성상소적방법，억제회파신호중적조성。위험증방법적유효성，채용해방법대이용SIR20뢰체수집적실측수거진행료상관처리。종결과간，해방법능유효억제배경조성，철현목표신호，위목표적검측화정위전정료량호적기출。
As a new detection and location human target behind walls method, the ultra-wideband through wall radar is widely applied in the military and civilian field. However, weak object echo signal are often obscured the strong background noise. In order to realize moving target detection, an effective background cancellation method is need to seek. And the method can enhance the signal noise ration and highlight the moving target signal. Based on researching the feature of echo signal, the paper introduced a algorithm to remove the background noise of echo signal based on adaptive Infinite Impulse Response(IIR)filter. The method combines with the advantage of IIR and adaptive filter. The data is collected using SIR20 radar and the proposed algorithm is used to process the data. The result shows the algorithm is valid and can highlight the target signal. The algorithm is benefit to detect and locate target.