Triveni Keskar 1, 2*, Vijay R. Dahake 1, and Anuj Bhatnagar 2
1 Department of Electronics and Telecommunication, Ramrao Adik Institute of Technology, Navi Mumbai, India
2 Society for Applied Microwave Electronics Engineering and Research, IIT Bombay, Powai, India
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Abstract: The proliferation of applicability of extremely high frequency band close to Terahertz frequencies for its signature characteristics such as reflection from metals, low loss transmission from non-polar dielectrics and specific absorption for wide range of liquids and drugs has been the interest behind this paper. We have modeled the system at 110 GHz to obtain simulation results justifying the system design. We have presented a practical implementation with 89.4 GHz IMPATT diode source for a small area TeraSense camera detector (4.5 cm〜4.5 cm) and an XY direction moving stage controlled by Holmarc MicroMotion platform for capturing raster scan imaging of large objects based on the results. We also have tried to make the result more intuitive to the user using edge detection and intensity analysis in image processing domain. We are able to detect non-invasively, an object within 34 cm〜22 cm area, in 4 minutes, which has been hidden under or inside a 4 mm thick cardboard or clothing covering.
Keywords: TracePro, MATLAB image processing, Symbolic math and GUI toolbox, Holmarc Micro Motion, TeraSense IMPATT diode.
Acknowledgment: The authors would like to express their gratitude towards two immensely cooperative institutions Ramrao Adik Institute of Technology, affiliated to Mumbai University and Society for Applied Microwave Electronics Engineering Research, IIT Bombay (Department of Electronics Information Technology Ministry Of Communications Information Technology, Govt. of India) for providing with an inclusive, encouraging environment. Special thanks to our colleague Kshitij Mittholiya, for his active timely contribution in project and peer reviews were a pacemaker for us.
Cite this article:
Triveni Keskar, Vijay R. Dahake, and Anuj Bhatnagar. Modelling, simulation and implementation of imaging system for detection of hidden objects[J]. International Journal of Terahertz Science and Technology, 2017, Vol.10, No.2: 62-70. DOI:10.11906/TST.062-070.2017.06.04