Typically, one airplane fly from one point to another and hence by storing the co-ordinate points of the destination, the flight can be directed easily. This is possible due to the atomic clock and other scientific advances. This can generate an error of up to 200 feet but the Military uses the more developed one known as the Precision Positioning Service (PPS) enable with an utmost accuracy. Then following triangulation method the airplane position is determined. The satellites broadcast signals containing its position details at particular time and the GPS receiver after getting the signals analyzes all details and then determines the location of the satellite. However, in case of air navigation that requires accurate positioning especially for landing on to airports, five satellites are needed. Usually navigation in road or shipping requires at least four satellite’s positions and status data. GPS satellites are arranged in such a way that every GPS receivers can determine the position of 5 satellites from anywhere on the earth. Anyhow GPS assists the pilot in landing airplanes at the exact location, as it requires maximum accuracy.Īs we have already discussed in some of our previous articles that there are 24 satellites covering earth in 6 orbital planes providing transmits signals that consists of satellite position, time and data on the basis of which the location of an object is determined in respect to its longitude and latitude coordinates. As far as the aviation industry is concerned GPS is used for both visual navigation and normal object guidance when it becomes impossible for pilot to locate the destinations’ position due to bad weather or at night. It is also used in shipping, automobile and other industries for navigational purposes. Global Positioning System or GPS is now the principal navigation system that provides location of any object on the earth with accuracy.
0 kommentar(er)
