The F-GPS GPS over fiber system is a transmitter and receiver pair used to transmit the RF Carrier signal from a GPS antenna to a remote location up to 10 Km. There are many advantages to converting the GPS Carrier to an optical signal for GPS over fiber. Fiber Optic cable is much less expensive than low loss coaxial cable used for RF signals. It is also much smaller and easier to work with. Optical signals are not affected by RF interference, therefore this system can be used to transport a GPS signal over fiber through a noisy RF environment. The F-GPSF can also be used to transport the GPS signal over fiber from a single GPS antenna to a multitude of locations throughout a building, aircraft, or ship.
This Fiber Optic GPS Antenna Link is a complete system which allows us to convert the GPS Carrier from RF to Light, transmit it up to 20 Kilometers if need be then reconvert it to RF to be received by the GPS Receiver.
Global positioning systems (GPS), used for navigation, relies on signals from satellites in a geosynchronous orbit around the earth. This synchronization is required for personal communications systems (PCS) such as cellular telephones. PCS base station signals using fiber optic transmitters and receivers experience low loss and high quality. In addition, smaller, less expensive power amplifiers can be mounted to the tower reducing transmission losses and system cost. Fiber's dielectric properties also reduce damage from lightning strikes at PCS base stations. Fiber optic L-Band , GPS links can also be used as an outside repeater in shopping malls, tunnels, and subways where PCS signals are non-existent or extremely weak, allowing L-Band satellite transport .
The four channel four fiber configuration pictured above is useful for service providers such as cellular network operators wishing to eliminate down time in cell towers. This system can guarantee up-time by providing a signal from up to four independent antennas over four independent fiber optic cables. Since each optical transmitter and receiver are isolated circuits inside the same enclose, it will take a minimum of at least four hardware failures to cause the GPS link to fail. An easy to read front panel LED screen displays signal power from all four circuits; and simple "on - off" LED indicators illuminate to show that the link is functional.
• Extends the range between GPS antennas and equipment to over 20 miles
• Provides up to 4 redundant GPS links for highly reliable systems
• Fiber links are immune to RF interference problems associated with coax
• Ideal for broadcasting towers, cell sites, military installations, and large ships
• Dual redundant power supplies can be ordered for either AC or DC power
• Provides a fiber security break and insulates from lightning strikes
- GPS base stations with long antenna cable runs
- Run the GPS carrier to multiple GPS timing boards throughout a company
- Run GPS throughout an aircraft
- Satisfies the requirement of supplying multiple GPS receivers with a carrier, spread over a great distance
- For R&D facilities, supplies a GPS carrier to a multitude of engineers and technicians with only one antenna on the roof.
|*All Specifications Subject to Change Without Notice|
|Optical Output||1 mW min.|
|Wavelength||1310 - 1610 nm|
|Bandwidth Response||1000-1700 MHz|
|Amplitude Flatness||1.5dB typical|
|Input VSWR (50 Ohm)||2.0:1 max|
|1dB Compression||-25 dBm|
|Power||110/220 or 28-36 VDC|
|Dimensions-Indoor Rack Mount||Height 1.75
|Sealed Outdoor Waterproof Box||Height 4.17
|Link Loss||15 dB typical|
|Carrier/Noise (30khz BW)||15 dB min with input drive level at 70 dBm|
|3rd Order Intercept||22dBm|
|Operating Temperature||-25 to +70 (deg C)|
|Storage Temperature||-30 to +75 (deg C)|
|Optical Connectors||SC/APC Fiber S/M 9/125
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