A study by the U.S. National Institute of Standards and Technology (NIST), the U.S. Government agency responsible for maintaining national time scale, shows that Satelles’ Satellite Time and Location (STL) provides a signal that is independent of GNSS with exceptional timing stability and reach that extends indoors, beyond the range of GNSS signals.
Following a detailed performance study in 2020, NIST determined that STL is a reliable source of timing that is highly consistent with Coordinated Universal Time (UTC) and is based on a signal that is independent from GPS and other GNSS. The STL service delivered this consistent performance in a deep indoor environment where GNSS signals did not reach.
Weather-watching Doppler lidar instrument installed over Washington
23 Apr 2021
NIST and Oceanic & Atmospheric Administration measuring lower atmosphere wind flow for âgreenhouseâ gas emissions research.
NOAA s Scott Sandberg beside the new lidar system.The US National Oceanic and Atmospheric Administration (NOAA) and the US National Institute of Standards and Technology (NIST) have installed a Doppler lidar instrument to an existing weather station on top of the Department of Commerceâs Herbert Clark Hoover Building in Washington, D.C., to measure wind flow and turbulence in the lowest part of the atmosphere for a research project studying greenhouse gas emissions in the capital area.
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RESTON, Va., April 21, 2021 /PRNewswire/ Satelles, Inc. (www.satelles.com), innovative provider of highly secure satellite-based time and location services, today announced an important new finding by the U.S. National Institute of Standards and Technology (NIST) about Satellite Time and Location (STL). Following a detailed performance study in 2020, NIST determined that STL is a reliable source of timing that is highly consistent with Coordinated Universal Time (UTC) and is based on a signal that is independent from the Global Positioning System (GPS) and other Global Navigation Satellite Systems (GNSS). The STL service was able to deliver this consistent performance in a deep indoor environment where GNSS signals did not reach.
Bison depicted at the Altamira cave in northern Spain Thom Quine
The evocative Upper Paleolithic art (dating from roughly 44,000 to 12,000BC) found in caves in France and Spain has long intrigued art historical and scientific researchers. But one facet has stumped many scholars: Why are so many of these paintings found in remote, narrow, hard-to-reach halls or passages that cannot be navigated without artificial light?
A team of Israeli researchers suggests the answer: the torches used by the artists in such enclosed spaces triggered hypoxia, a state resulting from a reduced oxygen concentration that can stimulate dreams and hallucinations. By seeking out these tight spaces, the scientists suggest, the artists were aiming to achieve an altered state of consciousness that would put them in touch with the cosmos and inspire their imaginations.
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