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There are many pocket watch models with built in GPS and other apps. Moreover, you can get closely to a measurement with a third satellite. Strictly speaking, it takes away one quarter to decide which of the two points is correct. But usually what is done is to try to determine which of these two points is illogical, for our position. The bad point is far from the surface of the Earth. GPS receivers have programs to refuse evil and choose the point good point.
Assuming we know the distance to GPS satellites is easy to get our location, but how to get that data? The principle is again simple. It applies the familiar formula distance = speed × time. The satellite signals indicate the time of issuance. Comparing the time of each signal with the correct time, the receiver can determine the time it takes signals to travel from each satellite. So by measuring the time with a modern pocket watch it takes for the satellite signal to reach the receiver, taking into account that this is a radio wave that travels at the speed of light, one can calculate the distance.
Mentioned that vital information to determine the position of the GPS receiver is to know where they are located satellites. Fortunately, the orbits of these are very high, so are easy to predict. To be more precise, are continually monitoring these positions from a land station, since the gravitational fields of the moon or the sun could affect the path of the satellites. Then the monitoring station informs each satellite their correct position, and this in turn transmits the information to the receiver.
Note that the method requires that the pocket watch of the sender and receiver are synchronized (i.e. that both emit pulses at the same time), which is another task to be solved. The satellite clock has no problem in this connection that carries four atomic clocks, but the receiver clock is not as accurate as those. To resolve this problem, the receiver determines the distance to a fourth satellite.
With four measurements, the receiver can use various combinations to get different measurements of position. However, the positions do not coincide if your clock is not sync. The receiver then performs fine adjustments to your clock to match positions.
New models
Top manufacturers; have launched pocket watch models that combine steel and leather and modernity glamorizing your look. In these models highlight the curves marked and well-designed straps. These watches are perfect for the independent woman, daring and cosmopolitan.
Sense of exquisite glamour in home décor with a set of Artificial Flower
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Action Figures this New Year to surprise your beloved kids
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A Fashion trendy WWE Action Figure brings smile to your kid’s face
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