Machine Learning Dataset for Radio Signal Classification
This RF signal dataset contains radio signals of 18 different waveforms for the training of machine learning systems. The data has been created synthetically by …
TDOA Transmitter Localization with RTL-SDRs
This page gives an introduction to time-difference-of-arrrival (TDOA) based localization of transmitters and presents a simple practical system using three RTL-SDRs to localize signals in …
The Panoradio SDR
The Panoradio is a tech-demo for modern software defined radio (SDR), that shows what is possible with today’s technology in AD conversion, signal processing and …
The Direct Sampling SDR Architecture
The traditional radio receiver uses analog processing, i.e. analog mixers, filters and amplifiers to convert the incoming RF analog signal from the antenna to baseband, …
SSB Demodulation
The demodulation of single-sideband (SSB) signals requires special attention, because simple mixing leads to superposition of the upper and lower sidebands at audio frequencies. The …
Powerful Hardware for SDR: The Zynq and the Zedboard
This an excerpt of my more extensive paper on Xilinx’s Zynq System-on-Chip for Software Defined Radio processing from 2018: “The Xilinx Zynq: A Modern System …
Basics of Analog-to-Digital Conversion
Digitizing Signals and Discretization The heart of a direct conversion receiver is the analog-to-digital converter (A/D converter or ADC), that samples analog signal in order …
Correlation for Time Delay Analysis
Time delay analysis finds the delay (also called the “lag”) between two signals, that are shifted in time. It is the most important part of …
Set Up a TDOA System
This article describes how to setup a low-cost TDOA system based on RTL-SDR + Raspberrry PI receivers and how to connect them via ethernet. Requirements …
Advantages of Digital Signal Processing for SDRs
With the advent of digital technology, analog circuits in radio transceivers have been widely replaced by digital signal processing. This is because digital signal processing …