Abstract: We propose a two-stage Doppler compensation method for 100-Gbit/s inter-satellite laser communications. We experimentally demonstrate its better Doppler shift tolerance and ~2.5(0.5) orders ...

Yet another round of potentially severe storms is threatening the Chicago area Friday, the latest in a string of systems eyeing the region this week. With virtually the entire Chicago area under a ...

Elgin’s outdoor warning system was activated three times Tuesday night but not because there were tornadoes spotted in the area. The alerts were triggered by the severe thunderstorm moving through the ...

Here’s why tornado sirens will blare across Minnesota, even on a warm and sunny day Test sirens will go off at 1:45 and 6:45 p.m. Cellphones may buzz too as part of the statewide drill.

(St. Paul MN-) It's Severe Weather Awareness Week, and Minnesota officials want to make sure you're prepared when severe weather hits. The outdoor warning sirens will sound at 1:45 p.m. and 6:45 p.m.; ...

During a tornado, seek shelter in a basement or an interior room on the lowest floor, away from windows. If driving, do not try to outrun a tornado; instead, find a sturdy building or lie flat in a ...

Have you ever heard tornado sirens go off in Milwaukee County and wondered why your phone never made a sound? Turns out, while sirens and weather alerts are triggered by the same warning, they're two ...

This story has been updated to include new information. When a tornado warning is issued, outdoor sirens across Milwaukee County signal the potential danger. At least one tornado touched down in ...

As the Artemis II astronauts hurtled around the moon during their historic flyby, basking in unprecedented views of the illuminated lunar far side, pilot Victor Glover described the visuals as “sci-fi ...

The New York Sirens defeated the Seattle Torrent in front of a sold-out crowd at Madison Square Garden over the weekend. Bruce Bennett / Getty Images NEW YORK — The night before taking the ice ...

Abstract: Frequency-based localization methods exploiting the Doppler effect typically assume uniform sensor motion, which is difficult to achieve in practice, especially for unmanned aerial vehicles ...