¶ … Global Positioning Satellites
The History of Global Positioning Satellites
The First Global Positioning Satellite
Transmission Functions of the Global Positioning Satellites
Reception of Information from Global Positioning Satellites
Advantages of the Global Positioning Satellites System
Introduction to the Global Positioning Satellites
As the name suggests, the global positioning satellite system is based on satellites. It is a navigational system that comprises of a complex arrangement of satellites that orbit round the earth. Twenty-four in all, these satellites are eleven thousand nautical miles far in space. There are six dissimilar orbits wherein the satellites continually keep revolving. It takes these satellites twenty-four hours to complete two orbital revolutions round the Earth. Upon calculation, the revolutionary speed of these satellites is computed to be around 2,600 meters per second (JA-GPS.com).
The radius of every orbit of the global positioning satellites is approximately 25,000 kilometers from the center of the earth, making them 20,000 kilometers above the planet's crust. The orbital route of global positioning satellites places them approximately between North and South latitudes of 60 degrees each (JA-GPS.com).
Life expectancy of each satellite of the global positioning system is around ten years. As a result, periodic substitution is a recurring process whereby new global positioning satellites are constructed and introduced into the respective orbital. All necessary replacements until the year 2006 have been planned and financially provided for in the Global Positioning System (JA-GPS.com).
The Theory of the Global Positioning Satellites
The technology behind the global positioning satellites system takes its origin from Marconi's comprehension of the radio waves and their utilization for transmission purposes. This radio wave technology was employed for social advantage in the course of 1920s. In these years, radio stations were established, which minimally required a receiver to commence operation. A complex model of the same simple technology applies to the functioning of the global positioning satellites system.
After World War II, most developed nations realized the need for keeping up to the minute inside knowledge of each other. As a result, huge amounts of money were spent towards the development and reinforcement of radio transmission technology. More than that, the need for timely communications led to the development of advanced systems for the transmission and reception of radio waves.
The space exploration that began simultaneously with the...
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