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Operational Research and Information Management - Case Study Example

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This paper "Operational Research and Information Management" focuses on the fact that position fixing has been used as an important concept within the American GPS. Position fixing may be explained as a branch of navigation that relies on the use of different visual and electronic methods. …
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Operational Research and Information Management
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Download file to see previous pages The navigation system functions as a network of 24 satellites which are placed into orbit (Appleyard, Linford and Yarwood, 2008). With this powered 24 satellites placed in orbit, the GPS is able to function in all weather conditions and work in any part of the world on a 24-hour basis. Originally made for military use by the U.S. Army, the GPS is now empowered to contain all forms of civilian usage without the need for any procedural subscription or setup fee (Jennet and Tuxedo, 2002). GPS satellites work in a very precise manner by circling the earth twice in a day, going round a specified orbit and transmitting signal information to the earth (Garmin Ltd., 2014). As part of its peculiarities, GPS receivers use triangulation in finding the exact location of a person or object when it receives signal information.

The first of these is position lines and position circles. The principle of position fixing requires that there will be lined identified not only through observation made on the surface of the earth but also on a nautical chart (Dutton, 2004). In position fixing, two of these lines known as position line must intersect to form a fix in order to find a navigator’s location. Position circle, on the other hand, comprises circles that navigators measure from a chart, as well as from the surface of the earth to gain position fixing. Position circle and position lines work together to make it possible to have accurate position fixing as depicted in figure one below.

The function of the GPS and other navigation systems is highly dependent on the calculation of distances. For example in the GPS, taking time difference in comparison between the time a signal was received and time signal was transmitted, the GPS undertakes a distance measurement from other satellites to tell user’s position and subsequently display this on the unit’s electronic map (Garmin Ltd, 2014). Meanwhile, in navigation principle, the representation of distance as used in statute distance is different from an ordinary nautical distance.  ...Download file to see next pagesRead More
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