CAJ | 학술논문

基于步进频连续波,利用MTD滤波,通过时域、频域联合检测,研究了生命迹象探测的新方法,在检测到人体的同时,实现测距的目的.首先,基于人体微动模型建立步进频连续波生命迹象探测的回波模型;然后由回波得到距离像信息,划分距离门,经时域检测后,对有信号的距离门内距离峰值变化信息进行傅里叶变换;再通过MTD滤波,滤除静止目标的影响,经频域检测,即可检测到人体.仿真证明了该方法的有效性.
기우보진빈련속파,이용MTD려파,통과시역、빈역연합검측,연구료생명적상탐측적신방법,재검측도인체적동시,실현측거적목적.수선,기우인체미동모형건립보진빈련속파생명적상탐측적회파모형;연후유회파득도거리상신식,화분거리문,경시역검측후,대유신호적거리문내거리봉치변화신식진행부리협변환;재통과MTD려파,려제정지목표적영향,경빈역검측,즉가검측도인체.방진증명료해방법적유효성.
Based on stepped-frequency continuous wave (SFCW) and MTD filter with joint detection in time and frequency domain, a new method for life detection is proposed to get the range information in detecting human beings. Firstly, stepped-frequency continuous echo model in life detection built is according to human vibration model. Secondly, range gate is divided and time domain detection is used to gain the actually range gate where the targets are. And thirdly, the frequency information of these range gates is obtained, and then the effect of statistic objects elimilated through MID filter. At last, frequency domain detection is applied to get human beings targets. The theoretical validity is illustrated by simulation results.