A térinformatika alkalmazása a PMR eszközök rádiófelderítésében

Abstract

In these days, both the licensed and license-free PMR radio technology is going through massive paradigm shift as formerly seen at mobile phone technologies. In fact, the new digital PMR systems and individual devices are spreading in practice. Since these devices completely bypass the traditional telecommunications infrastructure, their detection and control is only possible by Signal intelligence. In my paper I review the theoretical foundations of GIS, as well as the importance of the role of civil communication intelligence. Explore the possibilities of GIS to support activities related to general communications intelligence, including detection of PMR devices, as well as the factors which determining the implementation of the reconnaissance. I summarize within the tools of RF links design features and the PMR systems frequencies propagation characteristics, as well as the propagation models from these roots. These form the basis of RF propagation prediction programs which promote the optimization of installation sites for monitoring sensors in practice.