This of course has been done before: the hardware draws a clock signal from the atomic clock in Braunschweig, Germany. So he grabbed a library for Arduino and got to work. But he was getting ...

This is the first of a series about developing intuition and understanding of signal processing using — mostly — spreadsheets. You probably won’t get a lot of practical use out of this ...

For half a decade, a mysterious television signal appearing to come from the sky left astronomers scratching their heads. Was ...

This was puzzling, given that the telescope is located in a designated radio quiet zone, where the Australian government regulates signal levels from all radiocommunication equipment—including ...

Median filter is a nonlinear filtering technique often used to remove noise from a signal or image. The noise reduction is a pre-processing step in any of the image processing operation to ensure ...