Satellite-bone data transmission emitting device and selection method of input signals thereof

Abstract

The invention discloses a satellite-bone data transmission emitting device and a selection method of input signals thereof. Two OC gate commands are sent, each OC gate command corresponds to a set of source signals, the two OC gate commands are processed, and one set of corresponding source signals are selected as the input signals of the satellite-bone data transmission emitting device according to processing results. The satellite-bone data transmission emitting device and the selection method of the input signals thereof have the advantages that the satellite-bone data transmission emitting device is not affected by a cold standby standalone while receiving the source signals of a signal source processing machine, and therefore stability and reliability of a system are improved; achieving complexity of hardware is controlled as far as possible, a judging circuit judging whether clock signals exist does not need to be added, an original hardware platform is kept basically constant, and only an FPGA unit is regulated; OC door signals are sent by a conventional measurement and control branch system, new hardware structures are not added, conventional equipment is used fully, implementing easiness is achieved, and cost is saved.

Description

technical field [0001] The invention belongs to the technical field of data transmission, and in particular relates to a transmitting device for selecting an input signal through command control and a method for selecting the input signal, which can be commonly used in the field of satellite data transmission. Background technique [0002] In the satellite data transmission system, the function of the data transmission transmitter is to receive the effective data from the source processor, complete the channel coding and modulation functions, send the signal to the power amplification device, and finally send it to the ground through the antenna. In practical applications, in order to ensure the reliability of the whole star, the data transmission system usually adopts the form of main backup, and some key stand-alone machines also adopt the form of cross backup. When the cross-backup form is adopted between the source processor and the data transmission transmitter, one dat...

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Problems solved by technology

[0004] This method of selecting the cross backup signal through "wire and" is very simple to implement, but the biggest disadvantage is that the quality of the input signal cannot be guaranteed, and then bit errors occur, because the signal source processor and the data transmission transmitter are used between It is a high-speed serial LVDS signal. When the source processor is not turned on, the signal received by the data transmission transmitter will be interfered, and the interference signal will be transmitted to the useful signal through the "wire and" method. As a result, the quality of the input signal deteriorates, and even a bit error occurs at the output end.

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