摘要
研制了基于PC机和单片机主从控制方式的毫米波辐射成像系统,设计了软件积分以灵活调节系统的积分时间.利用配有卡赛格伦天线的辐射计对同一场景进行了3mm和8mm辐射成像实验,3mm和8mm天线的3dB波束宽度分别为0.5°和1.5°.实验结果表明:3mm辐射图像的空间分辨率明显优于8mm辐射图像的空间分辨率,但图像所含噪声较大.
The millimeter wave radiometric image through voltage-color transition can easily identify targets. A master-slave millimeter wave imaging system by PC and MCU was presented. The soft ware integration was design to acquire optimal system integration time. 3mm (3dB beam width of 0.5°) and 8mm (3dB of beam width of 1.5°) radiometric image experiments were done to verify the spatial resolution to the same scenery by 360mm Cassegrain antenna. The results show that the spatial resolution of 3mm imaging system is obviously higher than that of the 8mm imaging system but 3mm imaging system noise louder than that of 8mm imaging system.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第6期64-66,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词
辐射计
成像
灵敏度
积分时间
空间分辨率
radiometer
imaging
sensitivity
integration time
spatial resolution
