GPS Band Fiber Optic Link

Many types of operating systems and networks need to maintain accurate synchronization. The ViaLite GPS Link provides a low cost method that enables GPS signal distribution over long distance to inaccessible locations. The bandwidth of GPS link allows transmission of L1 and L2 GPS bands. The ViaLite GPS fiber optic link has been designed with a very low noise figure specifically for GPS signals which are often very low intensity at the GPS antenna. The wide dynamic range of the link results in negligible degradation of satellite signals due to noise or interfering signals. The GPS link is ideal for providing a GPS derived timing signal reference to equipment positioned where no GPS signal is available, for example in tunnels or underground mines.

A typical installation with the ViaLite fiber optic link acting as a very low loss extension between the GPS antenna and receiver is shown on the left.

Metro-GPS Fiber Optic Link

The ViaLite Metro-GPS product offers a cost effective and simple method for transporting GPS RF signals to locations remote from the GPS antenna. Metro-GPS is offered in single, dual or three channel format with further options of automatic signal switch over for situations where redundancy is required for maximum signal uptime and integrity.

Metro-GPS comes ready for in-line installation between GPS active antenna and time/frequency receiver. The environmentally sealed head end unit is located close to the antenna and transmits the GPS signal optically over single mode fiber optic cable. The base transceiver station (BTS) recovers the original GPS RF data for output to a standard GPS or time/frequency receiver. Both ends of the system can be specified in AC mains or –48Vdc for a truly plug-and-play installation.

Cellular BTS sites and public mobile radio networks are examples where synchronized timing control is critical. Metro-GPS is used in any application that demands accurate timing, location or mapping information such as: