#Software #Defined #Radio #Digital #Signal #Processing #RF #Spectrum #Monitoring

The advance of inexpensive software-defined radio modules, FFT and demodulation software libraries and low-cost servers (RasPi or Ubuntu Linux), enables the remote visualization, selection, and demodulation of RF signals. The history, SP theory, and  architecture of this novel remote spectrum receiver will be covered and solutions demoed. What makes this discussed spectrum monitoring solution unique is that the User Interface is any (HTML5) standard web browser!

 

The idea of a RF spectrum server on the internet technology was initially pioneered by the NSA  to remotely capture and analyze transmissions of interest but this idea was prototyped at a fraction of the cost by DSP signals experts, and amateur radio club members at the University of Twente (The Netherlands)  and fellow communications students, created WebSDR.org. This Linux-based application software was distributed to international experimenters and amateur radio enthusiasts, eager to see their transmitted signal power spectra at a distant location. .This was followed by a Hungarian engineering student, Andras.Retzler, who rewrote code and released his open-sourced version known as OpenWebRX (earned both his BSEE Senior Project and MSEE Thesis from this project).  Take a sneak peak: https://www.receiverbook.de/map?type=&band=

 

Bio:
Joseph Jesson is currently CEO of RFSigint Group and has over 35 years experience with Motorola, British Petroleum, Oak Technology, and General Electric