You may have a GPS unit but may be unsure of how GPS coordinates map readings can be used by GPS vehicle tracking systems to exactly locate where your vehicle is located at any given point in time. This is best explained if you consider that a point on a map that is of two dimensions can best is represented as being the point where the lines of height and width intersect. So, if you are looking for a particular campsite or landmark or even want to know where you are presently positioned or even the location of your car you would require GPS coordinates to express these locations.

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p>In fact, GPS coordinate systems make use of either two or maybe three coordinates that need to be present in spherical system of coordinates that have to be aligned with the earth s spin axis. Thus, you will get different sets of GPS coordinates with one set representing the first line while the second set will represent the second line, which is known in the trade as GPS coordinates lines, and wherever on a map these two lines intersect, that would represent the point of your location.

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p>Different Systems

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p>There are a number of different GPS coordinates systems that can be used to find out the exact location of anyplace of interest to you as long as it is present somewhere on the globe; though, the standard degrees minus seconds coordinates are most popular of all positioning systems.

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p>The best way to visualize GPS coordinates is to think of the GPS coordinates system as being a clock and each degree is the same as an hour on the clock with each degree being further broken up into sixty minutes and minutes broken into sixty seconds. Thus, a minute would be the same as one mile wide at the earth s equator while the second would be 0.0192 miles. So, in this method of interpreting GPS coordinates, one degree would be the same as 69.1722 miles and a minute would be 1.1528 miles while a second would be 101.45 feet.

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p>There is another GPS coordinates system and that is the one that uses decimal format and is most often used by GPS vehicle tracking system manufacturers when they wish to handle data in their GPS units. However, even if a user selects GPS coordinates that are representative of a different format, this data will be converted into the format that has been used and thus, decimal format becomes the format that was requested and displayed in this format on the GPS unit screen.