GPS over Fibre
Extend the distance between the GPS antenna and the GPS repeater/receiver to reach places where signals are otherwise unavailable, where installation of coaxial cable is impractical.
A GPS receiving antenna is placed outside the building, preferably at roof level where it has a clear view of the sky to ensure it can “see” as many satellites as possible.
A coaxial cable runs from the antenna to a location just inside the building, and terminates on an optical transmitter (TX) module. It can be placed inside a waterproof enclosure if it needs to be placed outdoors.
The transmitter module converts the RF signals into light by modulating a laser light source; the modulated light is then transported through an optical fibre to the optical receiver (RX) module.
The RX module converts the light signal back into its original RF form, then amplifies and impedance matches it to the attached GPS receiver/repeater.
Benefits of fibre optic cable
GPS over fibre applications
There are many ways in which GPS over fibre can be used, aside from the three shown above.
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