Web Solutions for Remote Control and Visualization of the Electromagnetic Spectrum Provided By Sensors Based on SDR

In this article, we present the implementation of a Software Defined Radio (SDR) remote sensor management solution for electromagnetic spectrum monitoring using web interfaces. The proposed sensor is developed on an SDR platform - USRP-2932 with LTE standard specific signal monitoring capabilities. Two solutions have been implemented for remote control and visualization of the sensor parameters: by using VNC (Virtual Network Computing) software for full remote access and by implementing in GNU Radio the Bokeh python library, which allows visualization of graphs and charts directly through a web GUI. For accessing the sensor via the backbone network of an Internet Service Provider (ISP), in both cases a Virtual Private Network (VPN) was set up using the Point-to-Point Tunnelling Protocol (PPTP) solution.