GPS Synchronized Clock working principle:
GPS wireless clock is a very precise clocking
that uses the GPS (global positioning system) satellite
technology. These satellites scattered around the earth
time with 100% accuracy until the smallest fractions of a
and then therefore transmit those time data’s into various
locations on Earth.
The GPS data receivers which can be positioned
anywhere like on rooftops of buildings, windows of different
facilities in turn gets these data transmissions and
relay it to the master GPS transmitters installed in various
A GPS wireless clock is made up of a
system clock and a GPS receiver. The clock will start
functioning after getting powered by a SPECIFIED form of
source. Once it gets started it doesn’t needs any manual
adjustments as it will measure precise time automatically.
functions are to provide accurate time always without having
need for any modifications and adjustments.
The Global Positioning System (GPS) is a network
24 satellites in circular orbits around the Earth. Each
satellite carries a highly accurate atomic clock (along with
several backup clocks) and emits timed signals that include
code detailing its location. By analyzing a combination of
signals from at least four of these satellites, a GPS
on the surface of the Earth with a built-in microprocessor
receive the accurate time information along with location of
receiver (latitude, longitude & altitude).
The GPS satellites transmit UTC (Universal
Co-ordinated Time) information to a GPS receiver in the
installed in the facility. Based on this reference, the RF
Transmitter in the Master re-transmits the local time
information via a radio frequency signal @866Mhz to wireless
digital clock (s) in the facility. Distance coverage from
to Clock depends on actual site conditions, layout and line
As a result, all wireless clock(s) in the system
precisely synchronized to Master and therefore to atomic
Essae’s GPS synchronized clocks systems consist of master
and as many clock(s) as may be required.