Understanding The Requirements Of The Frequency Standards In GPS

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GPS is abbreviated as Global Positioning System which is

basically a navigation system that works on a space based

satellite. It gives us information regarding the location as well as

time of all weather conditions in all over earth wherever there is

GPS satellites present to confer their signals. The signals from

GPS originate primarily from the on-boards atomic clocks which

are monitored by the ground control systems. The G with PS

satellites basically transmits the time signals. The receivers using

the signals of GPS calculate the time to get the frequency

reference. It is controlling both the time signals as well as very

important to control both the time signals and the oscillators.

Time and frequency are two very important components in this

GPS system for the accurate transmission and receiving of the

signals in the d epiction of the location of the object accurately.

Understanding The Requirements Of The Frequency Standards In GPS

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In different domain, the GPS signals are used for a variety of

purposes like for the astronomic observations used time in order

to record the celestial events and repeating the same

observations at distant locations. While in electric power

companies, they uses frequency standard to maintain 50-60Hz

and the computer networks synchronize the distant nodes for

different purposes like billing, communications. Most importantly

communication systems use both time and frequency to maintain

carrier frequency. Like the military and banking networks, both of

them have special timing requirements for synchronization of data

encryption and decryption equipment. Frequency standards are

also needed for radio and television stations while for tracking

purposes like deep sea vehicles requires the proper coordinated

observations from the ground stations itself.

All of the above events require accurate combinations of precise

time, time interval as well as frequency reference, which is

Understanding The Requirements Of The Frequency Standards In GPS

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specific for each case. It draws a very important conclusion that

both precise time and precise frequency require the precise time

intervals which are measured by periodic pulse edges. Earlier

people used to face a lot of difficulty in achieving this thing

because the oscillators those were available in the market were

costly as well people didn’t know their proper usage, but with the

course of time they are becoming very friendly for usage and are

reliable for precise frequency, time as well as time intervals. They

have become much more pocket friendly, useful and providing

with more precise information .