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Global Positioning System
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or GPS is better known as "a satellite based radionavigational system developed and operated by the U.S. Department of Defense (DOD). permits land, sea, and airborne users to determine their three-dimensional position, velocity, and time twenty-four hours a day, in all weather, anywhere in the w ....
Middle of essay
....ned primarily for U.S. military use. It is denied to unauthorized users by the use of cryptography. Precise Positioning Service is available to U.S. and allied military and U.S. Federal Government users."(Tycho) The PPS accuracy is 22-meters horizontal, 27.7-meter vertical, and 100 nanoseconds time. (Utexas) As you can see the PPS has better accuracy then the SPS since it was ultimately designed for government use only.
Another system of is the three segments. The first is the Space segmen.... |
| Number of words: 974 |
Approximate pages: 4 |
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