Title :
Short- and long-range passive imaging in millimeter-wave-band
Author :
Vertiy, A. ; Ozbek, S. ; Pavlyuchenko, A. ; Tekbas, M. ; Kizilhan, A. ; Cetinkaya, H. ; Unal, A. ; Panin, S.B.
Author_Institution :
Int. Lab. for High Technol., TUBITAK-MRC, Gebze-Kocaeli, Turkey
Abstract :
The millimeter-wave passive radiometric imaging systems based on the single channel design are developed. The systems are intended for disclosure of dangerous objects concealed under persons´ clothing in short distances and for passive visualization of remote targets. The low-noise compact receiver (noise factor 4.5dB for 90-100GHz) involving four stages was designed. Antenna systems based on aspheric lens and on parabolic reflector were adopted. The radiometric imaging peculiarities of the building materials were investigated. The systems successfully recognize the metallic weapon hidden under outer clothing at a distance about 10m and visualize remote targets at a distance of 170m.
Keywords :
lenses; millimetre wave receivers; reflector antenna feeds; antenna system; aspheric lens; distance 170 m; frequency 90 GHz to 100 GHz; long-range passive imaging; low-noise compact receiver; metallic weapon; millimeter wave band; millimeter wave passive radiometric imaging system; noise figure 4.5 dB; parabolic reflector; passive visualization; radiometric imaging peculiarity; remote target; short-range passive imaging; single channel design; Antenna measurements; Imaging; Lenses; Microwave radiometry; Noise; Receivers;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050452
