CAJ | 학술논문

针对隐藏人体目标出现在偏离雷达视角的其它不同的位置或在检测过程中存在身体的偏移等情况使得回波非常微弱甚至没有，导致检测失效的问题。为此，在多发多收（MIMO）雷达体制的基础上提出一种多通道雷达检测方法，将天线放置在合理的位置，以确保人体回波信号能够被检测到。通过对每一通道回波信号预处理，并将所有通道的预处理结果进行小波图像融合和恒虚警（CFAR）处理实现隐藏人体目标的准确检测与定位，这样不仅提高回波信号的信噪比，还增加了雷达探测视角和距离。实验结果表明，该方法能够有效提高人体呼吸微动频率和位置的检测精度，优于传统的单站雷达检测方法。
침대은장인체목표출현재편리뢰체시각적기타불동적위치혹재검측과정중존재신체적편이등정황사득회파비상미약심지몰유，도치검측실효적문제。위차，재다발다수（MIMO）뢰체체제적기출상제출일충다통도뢰체검측방법，장천선방치재합리적위치，이학보인체회파신호능구피검측도。통과대매일통도회파신호예처리，병장소유통도적예처리결과진행소파도상융합화항허경（CFAR）처리실현은장인체목표적준학검측여정위，저양불부제고회파신호적신조비，환증가료뢰체탐측시각화거리。실험결과표명，해방법능구유효제고인체호흡미동빈솔화위치적검측정도，우우전통적단참뢰체검측방법。
The monostation radar is susceptible to the sight of radar, the radar echoes are too faint to detect when hidden human objectives deviate from the sight of radar during detection. The detection method of MIMO radar is proposed based on MIMO radar system in the paper, Multi-antenna placed in an appropriate location are used to guarantee that echoes are detected. The radar echoes are pre-processed ,and the pre-processed results for all channels are processed by the algorithm of wavelet image fusion and constant false alarm rate, and the results are used to locate and detect hidden human objective accurately. It not only improves the SNR of radar echoes but increases view angle and detection range. The results show that the detecting precision of location and respiratory rate of human can be improved effectively. Finally It's a better way to detect weak signal than monostation radar.