Gps Data Logger
GPS
Professor Dr Dogan Ibrahim from the Department of Computer Engineering at the Near East University in Cyprus describes the design of a GPS data logger device with SD card storage, where the collected data can be displayed in street-level using the Google Earth mapping program
GPS data logger with SD card storage and GOOGLE EARTH map interface
THE GLOBAL Positioning System (GPS) is a satellite-based navigation system developed by the US Department of Defence. The first GPS system was tested in 1960s using a constellation of five satellites. This system was implemented for military purposes and provided navigational fix data approximately every hour; it was not very accurate. In 1993 the number of satellites increased to 24. The system became fully operational and it was also made available to the civilians with a lesser accuracy. Initially, the accuracy of the civilian GPS system was deliberately disturbed using a method called Selective Availability (SA). With the SA, the position accuracy of a typical civilian GPS receiver was about 100 metres. In the year 2000 the US Department of Defence removed the SA and, as a result, the position accuracy of a basic GPS increased to around 10 metres. GPS has now become a widely used aid to navigation and it is commonly used in many applications such as land surveying, shipping, piloting, route guidance, map making, study of earthquakes, precise time reference and hobbies and games such as geocaching. actual circulation time is 11 hours and 58 ERROR SOURCE ERROR (METRES) minutes and, hence, the same satellite is over Selective Availability 30 a certain position four minutes earlier each Ionosphere 5.0 day. Orbit satellite orbit is about 20,000km above 2.5 The Errors Earth’s surface and the satellites are Satellite Clock 1.5 positioned such that they are inclined Signal Multipath 0.6 towards the equator with an angle of 55°. By Troposphere 0.5 this arrangement it is guaranteed that at least four satellites are
Professor Dr Dogan Ibrahim from the Department of Computer Engineering at the Near East University in Cyprus describes the design of a GPS data logger device with SD card storage, where the collected data can be displayed in street-level using the Google Earth mapping program
GPS data logger with SD card storage and GOOGLE EARTH map interface
THE GLOBAL Positioning System (GPS) is a satellite-based navigation system developed by the US Department of Defence. The first GPS system was tested in 1960s using a constellation of five satellites. This system was implemented for military purposes and provided navigational fix data approximately every hour; it was not very accurate. In 1993 the number of satellites increased to 24. The system became fully operational and it was also made available to the civilians with a lesser accuracy. Initially, the accuracy of the civilian GPS system was deliberately disturbed using a method called Selective Availability (SA). With the SA, the position accuracy of a typical civilian GPS receiver was about 100 metres. In the year 2000 the US Department of Defence removed the SA and, as a result, the position accuracy of a basic GPS increased to around 10 metres. GPS has now become a widely used aid to navigation and it is commonly used in many applications such as land surveying, shipping, piloting, route guidance, map making, study of earthquakes, precise time reference and hobbies and games such as geocaching. actual circulation time is 11 hours and 58 ERROR SOURCE ERROR (METRES) minutes and, hence, the same satellite is over Selective Availability 30 a certain position four minutes earlier each Ionosphere 5.0 day. Orbit satellite orbit is about 20,000km above 2.5 The Errors Earth’s surface and the satellites are Satellite Clock 1.5 positioned such that they are inclined Signal Multipath 0.6 towards the equator with an angle of 55°. By Troposphere 0.5 this arrangement it is guaranteed that at least four satellites are