This repository provides code and workflows to test several state-of-the-art vehicle detection deep learning algorithms —including YOLOX, SalsaNext, RandLA-Net, and VoxelRCNN— on a Flash Lidar dataset ...

Bats are impressive navigators. Like so many mini submarines equipped with sonar, they deftly navigate dark forests and caves by listening for the echoes of their own calls. But how bats can tell ...

Abstract: Doppler shift has significant implications in Low Earth Orbit (LEO) constellations due to the rapid relative movement of satellites. This letter presents a novel approach based on stochastic ...

The discovery of the rotational Doppler effect (RDE) has opened new opportunities for detecting parameters of rotating targets. In recent years, the physical mechanisms underlying this effect have ...

Donald Trump’s decision to allow Nvidia Corp. to sell advanced chips to China marks more than just a shift in US tech policy. It also raises questions about how far he’ll go to steady ties with Xi ...

We propose a technique for extracting the Doppler shift and its rate from OneWeb’s Ku-band user downlink signals and demonstrate its suitability for opportunistic positioning. Since the downlink ...

Two identical atomic beam vacuum systems are employed to minimize the impact of physical systems on the experiment. An ion pump with a 20 L/s pumping speed maintains long-term vacuum stability at 6E-8 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Cindy Ord/MG22/Getty Images for The Met Museum/Vogue Springtime, the most whimsical ...

thanks for your great work in gr-iridium and iridium-toolkit. I appreciate the talks you held at various chaos events, got interested and finally got me some RX equipment. I have questions about ...

ABSTRACT: This research study represents an ongoing research effort on Unidentified Anomalous Phenomena (UAP) with a focus on anomalous propagation of radar echo returns, mirroring established ...