19 October 2010 First imagery generated by near-field real-time aperture synthesis passive millimetre wave imagers at 94 GHz and 183 GHz
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Abstract
The first passive millimetre wave (PMMW) imagery is presented from two proof-of-concept aperture synthesis demonstrators, developed to investigate the use of aperture synthesis for personnel security screening and all weather flying at 94 GHz, and satellite based earth observation at 183 GHz [1]. Emission from point noise sources and discharge tubes are used to examine the coherence on system baselines and to measure the point spread functions, making comparisons with theory. Image quality is examined using near field aperture synthesis and G-matrix calibration imaging algorithms. The radiometric sensitivity is measured using the emission from absorbers at elevated temperatures acting as extended sources and compared with theory. Capabilities of the latest Field Programmable Gate Arrays (FPGA) technologies for aperture synthesis PMMW imaging in all-weather and security screening applications are examined.
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Neil A. Salmon, Neil A. Salmon, Ian Mason, Ian Mason, Peter Wilkinson, Peter Wilkinson, Chris Taylor, Chris Taylor, Peter Scicluna, Peter Scicluna, } "First imagery generated by near-field real-time aperture synthesis passive millimetre wave imagers at 94 GHz and 183 GHz", Proc. SPIE 7837, Millimetre Wave and Terahertz Sensors and Technology III, 78370I (19 October 2010); doi: 10.1117/12.860396; https://doi.org/10.1117/12.860396
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