Gps Underground
Gps Underground

NTP Server Clocks Reference: What is the best radio or GPS?

NTP Server is a network equipment provider's server and network infrastructure of the network. That is the correct time. Reference NTP Server at the exact time received from an external source, such as time and frequency radio broadcasts or GPS. This article describes the external time reference provided. NTP server and synchronize the benefits of each.

The amount of time and frequency radio broadcasts available in various places. WWVB signal at the US-based DCF – 77 in Germany and MSF in the United Kingdom. Radio airtime and frequency of these as a source of stability and accuracy of the time. In addition, the indoor radio antenna is located on generally. Used to receive these signals. – Reduced cost of installation. However, radio signals can be affected by local topography. – Such as hills and valleys. There is no guarantee of receiving radio signals is not. Even inside the transmission of signals.

Radio broadcast MSF in the United Kingdom National Physics Laboratory recently. Recently moved from Rugby to the East Midlands. Anthorn in Cumbria since the move would be widely accepted in the receiver to the south of England have suffered. – Although it is very good at the reception for the body.

Local environment can also affect radio signals. Radio antenna is placed inside metal cages or metal armor building experience poor reception. In addition, the antenna is in the basement or underground. May fail.

GPS Global Positioning System used for navigation around the world. Each GPS satellite with high accuracy. onboard atomic clock sync – a reference to an ideal. For the duration NTP Server.

The GPS system is a constellation of each 24 moon orbits the broadcast time and position data continuously. This information can be received anywhere. On the face of the planet, the antenna can provide the line of sight to the satellite.

GPS has a number of advantages in time to radio frequency and broadcast First, the GPS can be received anywhere in the world and is not. Limited by the power transmitter and radio range. Secondly, the GPS signal is a more accurate reference than radio solutions. Thirdly, the timing information GPS can be received by anyone who can provide the antenna with a good view of the sky. But GPS antenna must have line of sight with GPS satellites. Therefore, an ideal location for the antenna. GPS on the roof with a view. Full 360 degree sky. In addition, if buildings or trees that obscure the horizon, it will continue to affect the integrity of the receiving Roof antennas can significantly add to the cost of installation of the server. NTP.

In summary, the reference radio and GPS time and frequency. NTP server systems, both have some The advantages and disadvantages. However, the accuracy of the GPS receiver and antenna installation guarantee even a roof to it the choice of reference system NTP Server.

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