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Facebook Acquire Mapillary
By Lurker,
The big news in the geospatial world at the moment is Facebook’s acquisition of Mapillary. For those unfamiliar, Mapillary is a darling of the mapping world and one of the highest-profile geospatial startups of the last decade—launched in 2013, their mission was to create a global street-level imagery dataset to rival Google Street View.
Mapillary was the prototypical “venture-scale” business — preposterously ambitious, technically impressive, inarguably valuable for the world, and plausibl
GPS III SV-08 ‘born’ with core mate complete
By Lurker,
The United States Space Force’s GPS III program reached another milestone with the successful core mate of GPS III Space Vehicle 08 at Lockheed Martin’s GPS III Processing Facility in Waterton, Colorado, April 15.
With core mate complete, the space vehicle was named in honor of NASA trailblazer and “hidden figure” Katherine Johnson.
The two-day core mate consisted of using a 10-ton crane to lift and complete a 90-degree rotation of the satellite’s system module, and then slowly lowerin
Using Satellite Imagery to Track Volcanic Ash Clouds
By Lurker,
Researchers have developed an algorithm that can distinguish between volcanic and non–volcanic clouds using high-resolution satellite imagery. Called the Cloud Growth Anomaly (CGA) technique, the algorithm uses geostationary satellite data to detect fast growing vertical clouds caused by volcanic output. Volcanic ash produced by eruptions are a major threat to airplanes. In 2011, for example, Grímsvötn erupted, closing Iceland’s air space. Volcanic ash can cause significant damage to airplan
Monitoring Volcanoes Using Drone
By Lurker,
Volcanoes present potential hazards not only to human life around these features but also to scientists studying them. With the increase usage of unmanned aerial vehicles (UAVs), or drones, scientists now have a powerful tool to better monitor active volcanoes without getting into a dangerous situation. While being safer to use than traditional monitoring, UAVs can also help deliver vital data to better learn about volcanoes that can help better predict eruptions and how they may disrupt travel
Automatic restart of pgAgent job when it fails
By darksabersan,
Hi Guys,
I have several Agents setup on various PostgreSQL 10 databases to run tasks but I would like to know if someone of you knows a tool that can restart an Agent that didn't run properly.
I am used to use a query to see the status of every tasks when it fails or success as below, launched from postgres db:
SELECT jobid, jobname, jobenabled, lastjob.jlgstatus last_job_status,
jstid, jstname, (jstkind, jstonerror) "type->error",lastjobstep.jslstatus last_step_status, jsloutpu
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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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