Signal generation and comparison device and method based on optical fiber transmission

Abstract

The invention discloses a signal generation and comparison device and method based on optical fiber transmission. The signal generation and comparison device comprises a ground operation control system and an information processing subsystem, a signal transceiving subsystem and a 10-gigabit switch of a civil service platform. The ground operation control system and the information processing subsystem of the civil service platform organize service information needing to be sent out of a station to generate baseband signals and send the baseband signals to the signal transceiving subsystem. Thesignal transceiving subsystem of the civil service platform is responsible for generation of information frames and signal spread spectrum modulation, signals are transmitted to a ground operation control system through optical fibers, meanwhile, time delay information is obtained by comparing the signals transmitted back through the optical fibers with outbound signals, and relevant parameters of signal transmission are adjusted. According to the invention, the signal interaction architecture and the optical fiber transmission signals are compared to realize the signal combination transmission of the main control station and the civil station, so that the security of the service information of the main control station is enhanced, the time delay stability of the system is improved, and the maintenance difficulty and cost are reduced.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a signal generating and comparing device and method based on optical fiber transmission. Background technique [0002] The signal generation and transmission of the satellite navigation system first modulates and spreads the signal to be transmitted, transmits it to the transmitting terminal through the gigabit switch, and then transmits it to the signal combiner switcher, and the transmitted signal is processed by up-conversion and power amplifier and then transmitted through the antenna . [0003] Both the ground operation control system of the main control station and the civil service platform are divided into information service subsystem, information processing subsystem and signal sending and receiving subsystem. In the combined transmission process of the main control station signal and the civil service signal, according to the form of the civilian outbound...

AI Technical Summary

Problems solved by technology

[0008] In view of the above technical problems, the present invention provides a signal generation and comparison device and method based on optical fiber transmission, which effectively solves the inconvenience of information processing and the increased risk of information leakage caused by the interacti...

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