Passive Millimeter Wave Imager of BeiHang University
The imaging principle, system configuration, and primary results of the Passive Millimeter Wave (PMMW) Imager of BeiHang University (PMWI-BHU) are presented. The imaging principle of the PMWI-BHU is based on aperture synthesis technique and digital beam scanning technique. The PMWI-BHU consists of a Y-shaped antenna array with 24 antennas, a coherence receiver array and a digital signal processor. The antenna array is a Y-shaped array with 8 elements in each arm, and each element antenna is a Potter horn antenna. The receivers operate at 34.1 GHz with two single band down-converters and analog IQ demodulations, the output IF is 10~100MHz. The digital signal processor is consists of three Analog to Digital Converters(ADC), a digital correlation unit and a signal process unit. Each ADC has 16 channels, operates at 200MHz sample rate with 8 bits. The digital correlation unit adopts lbit correlation technique which works in real time. The signal process unit is used to calibrate the raw measurement, and to inverse the passive millimeter wave image of the scene. At present, the PMWI-BHU has been tested carefully, and a serial of imaging experiments being carried out. The primary results are encouraging.
Hu Anyong Miao Jungang Zheng Cheng
School of Electronics and Information Engineering, BeiHang University, Beijing 100191, China
国际会议
The 3rd China-Europe Workshop on Millimetre Waves and Terahertz Technologies(第三届中欧毫米波与太赫兹技术研讨会)
北京
英文
37-43
2010-09-23（万方平台首次上网日期，不代表论文的发表时间）