Design of W-band passive millimeter wave imaging system

Author

Qike Chen ; Liangchao Li ; Yonghong Zhang ; Yong Fan ; Jianyu Yang

Author_Institution

EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol., Chengdu, China

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

1025

Lastpage

1027

Abstract

A W-band passive imaging system based on focal plane array (FPA) is developed and experimented in this paper. The imager consists of a 500mm diameter parabolic reflector, and 16 feed-horns array, 16 channels FPA wideband radiometric receiver based on Direct-detection total power type, scanning mechanism, image processor and displayer. The arrangement of the feed-horns is well designed to sample the survey scene at Nyquist density in vertical direction. Its achieved angular resolution is 0.47° and the thermal sensitivity varies between 1.3 and 1.5K at integration time 2.5ms. By scanning in azimuthal direction, the system forms one frame of image with field of view (FOV) of about 60°H×8°V in 8 seconds.

Keywords

focal planes; millimetre wave imaging; FPA wideband radiometric receiver; Nyquist density; W-band passive millimeter wave imaging system; diameter parabolic reflector; feed-horns array; field of view; focal plane array; size 500 mm; temperature 1.3 K to 1.5 K; thermal sensitivity; time 2.5 ms; Arrays; Calibration; Feeds; Imaging; Millimeter wave technology; Radiometry; Receivers; Nyquist sampling density; W-band; focal plane array (FPA); passive millimeter-wave imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421813

Filename

6421813