| 摘要 |
PURPOSE: A signal distributor for a global positioning system(GPS) is provided to reduce system building costs by multiplexing the GPS signals, and to reduce consumption amounts of cables to minimize interferences between antennas according to positions of each system. CONSTITUTION: A signal distributor of a global positioning system(GPS) comprises a signal level converter(151), three dividing amplifiers(154,155,156), a data analyzer/signal comparator(152), a central operating processor(153), and a memory(MEM). The signal level converter converts 10MHz, 1PPS, TOD signals of output terminals(A,B,C) into transistor-transistor logic(TTL) levels capable of processing the signals with a microphone. The dividing amplifiers multiplex the signals into more than two, and distribute the signals to each of output terminals(A1,A2,A3,A4)(B1,B2,B3,B4)(C1,C2,C3,C4). The data analyzer/signal comparator compares signal data of the TTL levels with basic signal data to analyze offsets of signals, and converts the 10MHz/the 1PPS/the TOD signals into the TTL levels. The data analyzer/signal comparator compares the TTL levels with the signal data to analyze the offsets of the signals. The central operating processor compensates the offsets of the data analyzer/signal comparator. The memory stores the basic signal data and system operating programs.
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