Title :
Investigation on two modelling approaches for millimetre wave imaging system
Author :
Qi, Feng ; Tavakol, Vahid ; Ocket, Ilja ; Schreurs, Dominique ; Nauwelaers, Bart
Author_Institution :
Div. ESAT-TELEMIC, Katholieke Univ. Leuven, Leuven
Abstract :
Imaging is a historical topic in optics, however, in the region of millimetre or sub-millimetre wave, due to the difficulty in fabrication and technology, active imaging system is still in its childhood compared to the relatively mature passive imaging system in the same frequency band. System modelling is important during the design phase, which could help the designers to understand the image formation process and consequently to work towards a better system. Considering the huge electrical size of the practical system, it is extremely hard to do a full-wave calculation. Physical optics (PO) explores the possibility to fulfil this task. In this paper, two models based on PO will be explained with comparisons between frequency domain calculation and spatial domain calculation. The goal is to draw some attention on the application of Fourier optics when we design a millimetre wave imaging system, and moreover, to propose a more physical model for the coherent imaging system.
Keywords :
millimetre wave imaging; physical optics; submillimetre wave imaging; Fourier optics; active imaging system; coherent imaging system; frequency domain calculation; full-wave calculation; millimetre wave imaging system; passive imaging system; physical optics; spatial domain calculation; submillimetre waves; Adaptive optics; Biomedical optical imaging; Frequency domain analysis; Geometrical optics; Lenses; Optical imaging; Optical sensors; Optical signal processing; Physical optics; Sensor arrays;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2