Title :
Design of a PMMW Imaging system
Author :
Chao, Li Liang ; Jianyu, Yang ; Xin, Zheng ; Yong, Fan ; Hong, Zhang Rong
Author_Institution :
Univ. of Electron. Sci. & Technol. Chengdu, Chengdu
Abstract :
A compact passive mm-wave imager (PMMW) has been developed for imaging with 3 mm Dicke-Radiometer and will be reported here. It uses a single-channel scanned superheterodyne radiometer. To solve the contradiction of sensitivity and spatial resolution for the motive platform imaging, adjustable integrator was designed and wavelet-analysis was adopted to wipe off noise effectively. To test a close range and different plane for imaging, two set antenna was designed for imaging. The parameters of the radiometer are given below: the center frequency 91.5 GHz, the system band-width 4 GHz, the sensitivity 0.5 K, the linearity 0.9999.
Keywords :
millimetre wave antenna arrays; millimetre wave imaging; radiometers; wavelet transforms; Dicke-radiometer; PMMW imaging system; adjustable integrator; frequency 91.5 GHz; motive platform imaging; passive mm-wave imager; single-channel scanned superheterodyne radiometer; spatial resolution; two set antenna; wavelet-analysis; High-resolution imaging; Horn antennas; Infrared imaging; Layout; Millimeter wave measurements; Millimeter wave technology; Optical imaging; Radiometry; Spatial resolution; Testing;
Conference_Titel :
Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on
Conference_Location :
Kokura
Print_ISBN :
978-1-4244-1473-4
DOI :
10.1109/ICCCAS.2007.4348288
