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Flooding in Somalia and Ethiopia
By Lurker,
Flash floods caused by heavy rains have killed at least 14 people, displaced thousands more, and destroyed properties and homes in several areas of Somalia signalling an early start of the Gu rainy season, which usually runs from April to June.
Those who have lost their homes are now living in makeshift shelters on higher ground, which are severely overcrowded and lack water and sanitation facilities. The Somali Disaster Management Agency (SoDMA) said it is the worst flooding in almost a de
A navigation system has been created that is more accurate than GPS
By Lurker,
The novel system uses mobile telecommunication rather than satellites
The researchers from Delft University of Technology, Vrije Universiteit Amsterdam, and VSL developed an alternative positioning system that uses mobile telecommunication rather than satellites, which could potentially make it more accurate and reliable than GPS.
“We realized that with a few cutting-edge innovations, the telecommunication network could be transformed into a very accurate alternative positi
SQL for ArcGIS Pro
By Capricorn,
Hi people,
Has anyone tried this Manifold add-in for ArcGIS Pro?
https://manifold.net/info/sql4arc.shtml
Is it really so good in providing spatial SQL for Esri file geodatabases, the steps we miss in ArcMap and ArcGIS Pro?
QGIS 3.30 ‘s-Hertogenbosch is released!
By Lurker,
The 3.30 ‘s-Hertogenbosch release of the groundbreaking QGIS project introduces a wide range of changes and optimizations from the QGIS developer community.
The splash screen features a fragment of the “Gemeentekaart”, or Municipality map, of ‘s-Hertogenbosch from 1867. It is part of a series of 1200 maps of all the communities in The Netherlands from that time, which were published in an atlas for each of the 11 regions. All maps were drawn in the same size, although for large municipaliti
What's new in ArcGIS Pro 3.1
By Lurker,
Catalog layers
You can create and draw catalog layers in maps and scenes. A catalog layer is a collection of item references to local and shared datasets, layers, services, and workspaces from various work environments.
Automatic resizing of layout elements
When you change the page size or orientation of a layout, you can automatically resize and reposition layout elements.
Time-enabled scene layers
You can time-enable point, 3D object, or building scene layers to visu
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GPS is an incredible piece of modern technology. Not only does it allow for locating objects precisely anywhere on the planet, but it also enables the turn-by-turn directions we take for granted these days — all without needing anything more than a radio receiver and some software to decode the signals constantly being sent down from space. [Chris] took that last bit bit as somewhat of a challenge and set off to write a software-defined GPS receiver from the ground up. As GPS started as a military technology, the level of precision needed for things like turn-by-turn navigation wasn’t always available to civilians. The “coarse” positioning is only capable of accuracy within a few hundred meters, so this legacy capability is the first thing that [Chris] tackles here. It is pretty fast, though, with the system able to resolve a location in 24 seconds from cold start and then displaying its information in a browser window. Everything in this build is done in Python as well, meaning that it’s a great starting point for investigating how GPS works and for building other projects from there. The other thing that makes this project accessible is that the only other hardware needed besides a computer that runs Python is an RTL-SDR dongle. These inexpensive TV dongles ushered in a software-defined radio revolution about a decade ago when it was found that they could receive a wide array of radio signals beyond just TV. source: Hackaday and GitHub - chrisdoble/gps-receiver
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