Low-cost microwave security camera system

Abstract

Microwave-based security camera systems have been implemented using different types of instruments to attain a real time, high resolution image representing dangerous concealed carry-on objects on people. Some designs achieved this goal but at a very high manufacturing cost that made them impractical as well as unfeasible. Moreover, such designs were made of a single receiver that led to loss of some important information. Therefore, the development of a two-dimensional microwave camera system at lower cost and high resolution is necessary. The main objective of this paper is to design, build, and test a high resolution, real-time low-cost camera system for security purposes. Furthermore, the proposed system addresses the development of a two-dimensional microwave imaging system that reveals the internal layers of non-transparent objects, based on the differences in dielectric constant of different materials. The objective is achieved by analyzing previous designs of microwave cameras to propose a cheaper system, which is implemented.