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.
 
 

Circuits










The code is quite simple: * GPS NMEA SD Card Data Logger. This example shows how to log data from three analog sensors to an SD card using the SD library. The circuit: GPS Module TX conencted to th...

The NEO6 Module is a standalone GPS receiver in high performance UBOX 6 positioning engine. These flexible and cost effective receivers offer numerous connectivity option in small size 1612.2 x 2.4...

In the circuit which you can find on the circuit diagram tab shows that an Arduino pro mini is used which controls all the process or receives GPS's output. After having received the GPS output, Ar...

... equator of the earth in terms of Latitude and Longitude. In this project the data regarding the geographical coordinate is extracted from the GPS output with the help of the Arduino and send it...

I was able to output +3.3V logic from my Arduino and it worked, but the GPS unit's threshold must have been lower and the D90 didn't accept the data. Below are the ... Check out all the Circuit Pla...

Read about 'Arduino, GPS, and Remote-Controlled Aircraft' on element14.com. I recently picked up a ... Below is a list of everything you need to create a simple GPS Data Logger of your own using th...