The Gps Mobiles : Global Positioning System (GPS) is often used by computer equipment, such as NTP Server systems to provide a precise timetable refer to critical applications. This article gives an overview of GPS for timing applications and describes the equipment used to install a GPS antenna in a static situation.
Overview - GPS for accurate time
Global Positioning System is a system for the U.S. military Worldwide Shipping. The system consists of 24 satellites in orbit, each satellite is synchronized with an atomic clock precision on-board UTC time. The satellites continuously transmit time and place. Details of time and position can be anywhere in the world with a GPS receiver and antenna. GPS works continuously, whether the conditions in everyone, anywhere in the world. There are no fees to use the subscription charges or GPS. Many computer systems and timing systems NTP server with the help of GPS as an accurate external timing reference.
The accuracy of the GPS timing system
GPS provides highly accurate positioning and timing. Typically, a GPS receiver provides position information with an accuracy of 15m. NTP server systems may receive information from GPS time to a solution of a few nanoseconds.
GPS signal
GPS signal is transmitted is very weak, low-power radio signals, designated L1 and L2. L1 is the civilian GPS frequency transmitted at 1575.42 MHz signals travel with a view direction and can pass through clouds, glass and plastic, but are blocked by objects such as metal and masonry. Therefore, the ideal location for a GPS antenna on the top floor with a 360-degree view of the sky. But often the plant is on the side of a building or in a window satisfactory results. As a general rule, the better the view of the sky, the greater the probability of blocking a sign of good and consistent.
GPS Timing Antenna Types
GPS works like an amplifier to improve GPS signal for transmission over a cable, typically coaxial cable to the GPS receiver. GPS Timing Antenna comes with NTP server systems using a pole mounting system. Screws on the antenna pole screw terminal for installation on the roof. This agreement gives the GPS antenna to survive with a rigid mount easily in a position to strong winds without damage. Normally, the GPS antenna is very small in size, from less than 90 centimeters in diameter. Discount patch antennas are also available, but they are generally better suited for use in vehicles.
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