The Best Motion Sensors and Privacy Alternatives to Security Cameras

If you prefer not to have cameras in and around your home, try one of these more private, WIRED-tested security devices.
Hackaday

Transponder Mania

In order to not hit something, you generally need to know where that thing is. On land, the meager human eyesight tends to be ...
GitHub

KISS FFT Arduino & ESP32 Library

KISS FFT converts a time-domain signal (a series of samples from a microphone, ADC, accelerometer, etc.) into the frequency domain, revealing which frequencies are present and how strong each one is.
IEEE

Bridging the Domain Gap Between Target Detection and Parameter Estimation: A Time-Frequency Parameter Estimation Scheme for HFSWR

Abstract: Time-frequency analysis (TFA) serves as an effective technique in improving target-monitoring performance of high-frequency surface-wave radar (HFSWR). However, the potential of this ...
IEEE

Field-Demonstrated Photonic Radar System With Optoelectronic Oscillator and Sagnac Down-Conversion for Low-RCS Targets Detection

Abstract: Photonic-based radar technology is a promising solution for detecting low-radar cross-section (RCS) targets, offering high-frequency operation, low-phase noise, and wide bandwidth for ...