3mm波段被动毫米波成像机理与关键技术研究

项目名称： 3mm波段被动毫米波成像机理与关键技术研究

项目编号： No.61501143

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 王楠楠

作者单位： 哈尔滨工业大学

项目金额： 21万元

中文摘要： 近年来，恐怖事件频发，对安检的智能化和可靠性提出了很高要求。毫米波能穿透织物，根据人体和物品毫米波辐射特性的不同，被动毫米波成像技术可用于探测人体衣物下的隐匿物品。. 提高温度灵敏度和空间分辨率，是毫米波成像技术的关键问题。本项目根据国内外毫米波成像技术的发展情况，一是研究3mm波段人体衣物下隐匿物被动探测的机理，建立辐射亮温传递模型，分析和测试人体、隐匿物及衣物在3mm波段的电磁参数。二是研究提高毫米波成像温度灵敏度的方法，提出低阻抗渐变缝隙天线作为辐射计的馈源天线，研究3mm波段宽带直接检波式辐射计的设计方法和校准方法。三是研究提高毫米波成像空间分辨率的方法，分析小焦径比聚焦天线正馈和偏馈时的聚焦特性。建立3mm波段人体衣物下隐匿物探测成像样机，并进行系统实验。. 项目成果将为毫米波成像技术的发展提供理论依据，在安检、遥感和军事等各个领域都具有广阔的应用前景。

中文关键词： 毫米波辐射计；低阻抗渐变缝隙天线；毫米波成像；聚焦天线

英文摘要： In recent years, the frequency of terrorist incidents requires high standards to the intelligence and reliability of safety inspection. Millimeter waves can penetrate through textiles, according to the difference of the radiation characteristics of millimeter waves between human body an object. Passive millimeter wave imaging technology can be used for the detection of the hidden object in clothing. The key issue of millimeter waves imaging technology is improving the temperature sensitivity and spatial resolution. According to the development history of millimeter waves imaging technology, the aims of this study are as follows, firstly it aims to the mechanism on passive detection of the hidden object in clothing at 3mm waveband, modeling the brightness temperature transmit and analyzing and testing the electromagnetic parameters of the hidden object in clothing at 3mm waveband. . Secondly it aims to the method of improving the temperature sensitivity of millimeter waves imaging, put forward using a low-impedance tapered slot antenna as the feed of microwave radiometer and research the design method and the calibration method of broadband direct detection radiometer at 3mm waveband. . Thirdly the purpose of this study is to reveal the technique of raising spatial resolution of millimeter waves imaging, analyze the comparison of focus features of the small focal diameter ratio focusing antenna under the circumstance of feed forward and offset-fed, set up model machine of the detection imaging of the hidden object in clothing at 3mm waveband and proceed systematic experiments. . The results of the project will provide theoretical basis for the development of millimeter waves imaging technology which has a broad application prospect in safety inspection remote sensing, military and various fields.

英文关键词： Millimeter Wave Radiometer;Low-Impedance Tapered Slot Antenna;Millimeter Wave Imaging;Focusing Antenna