SpaceX Starlink Can Provide Super GPS With a Software Modification

There is an arxiv paper “Fused Low-Earth-Orbit GNSS”, by Peter A. Iannucci and Todd E. Humphreys of the Radionavigation Laboratory, The University of Texas at Austin, that details how low-earth orbit satellites can be modified to provide super-precise GPS. MIT Technology Review indicates that the system would be accurate to 70 centimeters. Simple software upgrades …

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Amazon and China Belt and Road delay profits and building logistics

Amazon has posted just a handful of profitable quarters in its two-decade history and now has a $550 billion valuation. “Bezos’ ability to paint an extraordinary vision (i.e., ‘Earth’s Biggest Store’) and register steady progress against that vision is rewarded with the cheapest capital in the history of business,” says Galloway. “And… Cheap. Capital. Is. …

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China launches two new more accurate GPS satellites

China launched two BeiDou-3 GPS satellites into space via a single carrier rocket to support its global navigation and positioning network at 7:45 p.m. Sunday. The satellites were aboard a Long March-3B carrier rocket which took off from Xichang Satellite Launch Center in the southwestern province of Sichuan. This is the first two BeiDou-3 satellites …

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138 billon tons of Water from Hurricane Harvey pushed 28000 square miles down by 2 centimeters

GPS data shows the Harvey flood was so large it flexed Earth’s crust and pushed Houston down by ~2 centimeters. Information was tweeted out by Chris Milner of NASA jet propulsion laboratory. Hurricane harvey dropped 33 trillion gallons of water across the area it hit which is about 275 trillion pounds. 51.1 inch-count of water …

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Development and launch of centimeter accurate enhanced GPS with realtime correction

The Japanese government is eyeing 2020 to begin promoting exports of a GPS technology accurate to a several centimeters. This should help services that need pinpoint accuracy clamoring for the system. An H-IIA rocket carrying the Michibiki No. 3 quasi-zenith satellite blasted off from the Tanegashima Space Center in Kagoshima Prefecture, southwestern Japan. Japan’s improved …

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Atomic Cloud Observations go beyond Heisenberg limits

Researchers used laser light to link caesium atoms and a vibrating membrane. The research, the first of its kind, points to sensors capable of measuring movement with unseen precision beyond Heisenberg limits. A number of experiments – demonstrate that Heisenberg’s Uncertainty Principle to some degree can be neutralized. This has never been shown before, and …

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Indoor GPS using smartphones

A NIST-led research team spent more than 18 months collecting data from four different smartphone models to facilitate the development of indoor navigation apps. The data, which includes smartphone sensor readings, radio frequency (RF) signal strengths and GPS fixes, should help developers create better apps to assist users in finding their way inside unfamiliar buildings. …

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Third year of flat global carbon dioxide emissions but less than four years til 1.5C CO2 budget is gone

Global energy-related carbon dioxide emissions were flat for a third straight year in 2016 even as the global economy grew, according to the International Energy Agency, signaling a continuing decoupling of emissions and economic activity. This was the result of growing renewable power generation, switches from coal to natural gas, improvements in energy efficiency, as …

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