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Optical Engineering

Oversampling advances in millimeter-wave scan imaging using inexpensive neon indicator lamp detectors
Author(s): Assaf Levanon; Natan S. Kopeika; Yitzhak Yitzhaky; Amir Abramovich; Daniel Rozban; Hezi Joseph; Avihai Aharon; Alex Belenky; Michael Gefen; Orly Yadid-Pecht
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Paper Abstract

In recent years, much effort has been invested to develop room temperature inexpensive, but sensitive, millimeter wave (MMW) and terahertz (THz) detectors that can be used as pixels in focal plane arrays, which is important for real-time imaging. A new 18×2 neon indicator lamp MMW/THz scanner was developed. The components of the camera include horizontally shifted two-column glow discharge detectors in a scanning array. The detectors, costing about 50 cents each, are wired to a preprocessing card, a VLSI board, and a motor for scanner movement. A description of the VLSI Verilog programmable hardware of the new scanner, the physical architecture, the software user interface, and imaging results at 97 GHz are presented. At this stage, the emphasis is focused on the lamp exposure time and spatial resolution when the scanning is performed horizontally. In the future it is planned to expose all pixels simultaneously for real-time imaging. New software capabilities allow the application of digital image enhancement algorithms. Fast scanning permits obtaining images in 1 to 5 s. Oversampling yields a sharper edge response and a higher signal-to-noise ratio.

Paper Details

Date Published: 24 June 2013
PDF: 11 pages
Opt. Eng. 52(6) 063202 doi: 10.1117/1.OE.52.6.063202
Published in: Optical Engineering Volume 52, Issue 6
Show Author Affiliations
Assaf Levanon, Ben-Gurion Univ. of the Negev (Israel)
Natan S. Kopeika, Ben-Gurion Univ. of the Negev (Israel)
Yitzhak Yitzhaky, Ben-Gurion Univ. of the Negev (Israel)
Amir Abramovich, Ariel Univ. Ctr. of Samaria (Israel)
Daniel Rozban, Ben-Gurion Univ. of the Negev (Israel)
Hezi Joseph, Ben-Gurion Univ. of the Negev (Israel)
Avihai Aharon, Ben-Gurion Univ. of the Negev (Israel)
Alex Belenky, Ben-Gurion Univ. of the Negev (Israel)
Michael Gefen, Ben-Gurion Univ. of the Negev (Israel)
Orly Yadid-Pecht, Univ. of Calgary (Canada)

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