GPS Circuits

  

 

The Global Positioning System (GPS) is a space-based global navigation satellite system (GNSS) that provides location and time information in all weather, anywhere on or near the Earth, where there is an unobstructed line of sight to four or more GPS satellites. The GPS project was developed in 1973 to overcome the limitations of previous navigation systems,[1] integrating ideas from several predecessors, including a number of classified engineering design studies from the 1960s. 
 
A GPS receiver calculates its position by precisely timing the signals sent by GPS satellites high above the Earth. Each satellite continually transmits messages that include the time the message was transmitted
precise orbital information (the ephemeris) the general system health and rough orbits of all GPS satellites (the almanac).
 
Three satellites might seem enough to solve for position since space has three dimensions and a position near the Earth's surface can be assumed. However, even a very small clock error multiplied by the very large speed of light the speed at which satellite signals propagate results in a large positional error. Therefore receivers use four or more satellites to solve for the receiver's location and time.
 
The very accurately computed time is effectively hidden by most GPS applications, which use only the location. GPS has become a widely deployed and useful tool for commerce, scientific uses, tracking, and surveillance. GPS's accurate time facilitates everyday activities such as banking, mobile phone operations, and even the control of power grids by allowing well synchronized hand-off switching.
 
 

 

 

News

Raytheon's GPS OCX completes factory qualification

UPI.com Raytheon's GPS OCX completes factory qualification UPI.com The GPS OCX's factory qualification follows a number of other milestones for the program in 2016, including successful Critical Design...

Jan 17, 2017

Cuttack Municipal Corporation starts using GPS for better disposal of waste

Times of India Cuttack Municipal Corporation starts using GPS for better disposal of waste Times of India In phase wise manner, the civic body will equip all its vehicles with GPS devices. The CMC has also entered...

Jan 21, 2017

Australia to invest $12 million to test SBAS positioning technology

Australasian Transport News Australia to invest $12 million to test SBAS positioning technology GPS World magazine “SBAS utilizes space-based and ground-based infrastructure to improve and augment the accuracy,...

Jan 18, 2017

How GPS devices can help find people with dementia when they get lost

The Independent How GPS devices can help find people with dementia when they get lost The Independent Twenty-four satellites circle the Earth twice a day and transmit signals to global positioning system ( GPS )...

Jan 17, 2017

Aberdeen school buses to be outfitted with GPS trackers

Aberdeen school buses to be outfitted with GPS trackers The Daily World Parents will soon be able to monitor school buses their children are riding now that the Aberdeen School Board approved use of a Global Positioning...

Jan 19, 2017

Europe has launched a new satellite navigation system that will be precise down to a few centimeters

Quartz Europe has launched a new satellite navigation system that will be precise down to a few centimeters Quartz We tend to use “ GPS ” the way we use “Kleenex” or “Band-Aid”—as a brand name substitute for the...

Dec 27, 2016

Govt invests in trial to improve GPS accuracy for Australia

iT News Govt invests in trial to improve GPS accuracy for Australia iT News SBAS uses both satellites in space and infrastructure on the ground to provide improved accuracy, integrity, and availabiity of signals from...

Jan 17, 2017

Albert Einstein: The Father of Relativity

Eastern Daily News Albert Einstein: The Father of Relativity Eastern Daily News The Global Positioning System ( GPS ) works on the principles of relativity of physics. GPS is widely used in vehicles and for...

Jan 21, 2017

Europe's Plan To Stop Relying On US Satellites Suffered A HUGE Setback

Europe's Plan To Stop Relying On US Satellites Suffered A HUGE Setback Daily Caller Galileo is supposed to be the European Union's replacement for the U.S. Global Positioning System ( GPS ), but it is already 17...

Jan 18, 2017

Raytheon completes factory qualification testing of USAF's GPS OCX

Shephard Media Raytheon completes factory qualification testing of USAF's GPS OCX Airforce Technology Raytheon has achieved a significant milestone in the US Air Force's (USAF) global positioning system...

Jan 18, 2017

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