Wondering Star

Collection by Igorcarron

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igorcarron
Using Unsuspecting Amateur Comet Chasers and Interplanetary Probes as a Sensor Network Bright Stars, Schmidt, Galaxies, Science, Glitter Stars

Using Unsuspecting Amateur Comet Chasers and Interplanetary Probes as a Sensor Network

With this arxiv blog entry entitled "Astronomers Calculate Comet's Orbit Using Amateur Images" one realizes that astrophotographs posted online by amateurs all around the world represent a massive sensor network. The sensor network described here is embodied by you, me, and whoever can take nightsky images and upload their photographs on the web. How does this work? In a simplified instance, for each photo where the comet is displayed, there are also stars surrounding it. These stars can be…

Gdyby nie teoria względności Einsteina, GPS myliłby się o Więcej w Arduino Gps, Location Based Service, Global Positioning System, Rc Remote, Gps Navigation, Star Patterns, Night Skies, Constellations, Science Nature

GPS Constellation as a way to image the Ionosphere

While we all know about the GPS constellation of 32 satellites orbiting the Earth in MEO that provide coordinates to our smartphones (have we become too reliant on it ?), and is the mainstay of many of sensor networks on earth by providing them location and a universal time reference. One other use of this constellation is to image the ionosphere, i.e. perform an inverse problem from the measurements of the delay of message transmission between the satellites and some known antenna on the…

Image Based Geolocalization and Sensor Network Phone Store, Base, Cleanse, Star, Health, Health Care, Stars, Salud

Image Based Geolocalization and Sensor Network

This past week, there has been much issue with the fact the iPhone and Android phone stored the location of these phones in the clear. Another possibility of geolocation from one of these smartphones or any webcam come from their ability to locate where a photo was taken by correlating it with satellite imagery or correlating it with others. Two projects along those lines come to my mind: Webcam Geolocalization and IM2GPS. The first technique uses fixed webcams, but I think eventually it…

Participatory Sensing Systems enabled through a billion smartphones Enabling, Smartphone, Technology, Baseball Cards, Star, Tech, Tecnologia, Stars

Participatory Sensing Systems enabled through a billion smartphones

What can you do with a billion smartphones ? Participatory sensing seems an obvious choice or at least it was back in 2008-2009. From the Urban Sensing/CENS website: Participatory sensing. urban sensing is about people like you—equipped with today’s mobile + web technology—systematically observing, studying, reflecting on, and sharing your unique world. through discovery and connected participation, you can see the world anew. you can tell your local story. you can make change. Another…

[ Metafilter readers : Wondering Star is focused on planet sized sensor networks, if you have other examples please let me know . Continents, Star, Stars

A Continent Wide Frequency Monitoring Network

[Metafilter readers: Wondering Star is focused on planet sized sensor networks, if you have other examples please let me know. Thanks!] From Min Kao's site here is The Frequency Monitoring network (FNET) FNET is a low-cost, GPS-synchronized wide-area power system frequency measurement network. Highly accurate Frequency Disturbance Recorders (FDRs) developed at Virginia Tech are used to measure the frequency, phase angle, and voltage of the power signal found at ordinary 120-V electrical…

The Quake Catcher Network is a sensor network made up of people's computers. The data comes from the internal accelerometers of these compu. Catcher, Star, Stars

The Quake Catcher Network

The Quake Catcher Network is a sensor network made up of people's computers. The data comes from the internal accelerometers of these computers. The map of this crowdsourced sensors is here. You can join the network here. From the introduction section: The Quake-Catcher Network: Cyberinfrastructure Bringing Seismology to Homes and Schools Earthquake safety is a responsibility shared by billions worldwide. The Quake-Catcher Network (QCN) provides software so that individuals can join together…

JPL Global maps of Real-Time Ionospheric Total Electron Content (TEC) Global Map, All Planets, Earth Science, Emergency Preparedness, Spacecraft, Solar System, Constellations, Astronomy, Nasa

JPL Global maps of Real-Time Ionospheric Total Electron Content (TEC)

Last month, I mentioned how GPS Constellation can be used as a way to image the Ionosphere. Using the principle mentioned then, JPL has a webpage featuring the state of the ionosphere and it is updated every five minutes. From the page: Global maps of ionospheric total electron content (TEC) are produced in real-time (RT) by mapping GPS observables collected from ground stations. These maps are produced to test real-time data acquisition, monitoring facilities, and mapping techniques. The RT…