Abstract
Global positioning system (GPS) is one of the key satellite-based radio technolo-gy providing navigational services on earth or near earth. The increasing usage of GPS applications in daily life has proved that students/researchers of many edu-cational departments including information and communication technology (ICT) are particularly interested to learn and visualize the GPS anti-jamming techniques in a simpler way in their major communication courses. It is a fact that GPS radio signal is vulnerable in various ways to jamming signals launched by malicious el-ements. The traditional available GPS anti-jamming techniques generally involve either added hardware and/or computational complexity which introduce difficul-ty for students to understand the basic concepts. As an alternative, this paper pre-sents a simpler GPS anti-jamming system kit based on L1-band (1.575 GHz) of GPS for education purpose. More specifically, the proposed antenna array, inte-grated with two couplers, cancels out the jamming signal in radio frequency (RF) domain using sum and difference patterns generated by the latter. The simulated and measured results, in terms of scattering parameters and power profiles, of the proposed system have shown that the jamming signal can be eliminated with less complexity. Eventually, the proposed GPS anti-jamming system has great poten-tial to be used in ICT related disciplines for learning and training purposes.
Highlights
The scope of emerging technologies in learning is increasing day-by-day where many researchers come under a common goal and start to develop the solutions of the problems specially related to engineering education
This paper is dealing with a global positioning system (GPS) training kit design which can be used as a learning tool for information and communication technology (ICT) students/researchers
This paper presents a simple and easy to understand approach for the GPS anti-jamming which can be implemented in the radio frequency (RF) domain
Summary
The scope of emerging technologies in learning is increasing day-by-day where many researchers come under a common goal and start to develop the solutions of the problems specially related to engineering education This approach of collaboratively learning and development can be helpful in enhancing the engineering labs infrastructure and human skills [1]. Interference produced by jamming to the GPS signals can be eliminated by using adaptive signal processing [8, 9] These methods require jammer synthesis based on time-frequency distributions and the performance is compromise between antenna array size and computational complexity. In the antenna-based approaches, pattern and polarization diversity to enable null-steering has been proposed in [11] that suppresses up to two jamming signals incident from the angular region close to horizon It introduces additional hardware complexity on the frontend. In [13], a 5element antenna array-based GPS anti-jamming technique is proposed which is able to provide nulls in two directions at the cost of increased hardware
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