am planning to do my final year project on this topic.. can anyone provide me a detail description on this topic?? my email- devangansharma666[at]gmail.com

microcontroller and gps based geographical map drawing instrument very useful for civil engineers

Abstract
We created a automobile chase & lockup technique as our final year project. it’s controlled by laptop, wherever ever he automobile goes its coordinates area unit taken from the GPS module & then sent to the pc wherever a program (which they need programmed ourselves ) divides the coordinates in to x-y & then plots it on Google Maps. The Global Positioning System (GPS) has now become a widely used aid to navigation and it is commonly used in many navigational applications such as land surveying, shipping, piloting, route guidance, map making, study of earthquakes, precise time reference, and hobbies and games such as geo- caching. One of the problems with the early GPS system was its low accuracy which prevented it to be used in applications requiring high accuracy, such as piloting and street-level route guidance. With the recent introduction of the sophisticated error correction techniques such as the WAAS/EGNOS, the horizontal accuracy of a GPS system is nowadays around 10 m. This study describes the design of a microcontroller.

Introduction
The Global Positioning System (GPS) is a satellite based navigation system [1–5] developed by the USA Department of Defense. 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 and was not very accurate. In 1993 the number of satellites increased to 24, the system became fully operational, and the system 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 m. In the year 2000 the USA Department of Defense removed the SA and as a result the position accuracy of a basic GPS increased to around 10 m. The GPS satellites orbit the Earth twice a day with a speed of 3.9 km per second. The satellite orbit is about 20,000 km above Earth’s surface and the satellites are positioned such that they are inclined towards the equator with an angle of 55. By this arrangement it is guaranteed that at least four satellites are visible at any point on Earth at any time. Normally, three satellites are required to calculate the position of a point accurately on Earth’s surface and four satellites are required to calculate the altitude as well. Thus, with the arrangement of the satellites it is possible to calculate both the position and the altitude of any point on Earth’s surface accurately. In typical applications it is possible to get signals from at least six or seven satellites in a place with a clear view.