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Synchronization device, synchronization method and high-speed receiver using the synchronization device

A synchronization device, high-speed technology, applied in the direction of synchronization device, synchronization receiver, synchronization error correction, etc., can solve the problem of receiver unable to complete ranging and communication, unable to signal synchronization, difficult signal synchronization, etc., to reduce the processing burden , reduce requirements and ensure the effect of accuracy

Active Publication Date: 2019-02-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

The system symbol rate designed by the present invention can reach the Gbps level, and the sampling rate of the analog-to-digital converter (ADC) needs to meet the Nyquist theorem (that is, the sampling frequency of the ADC is at least 2 times the signal frequency) to transmit the symbol Even if the sampled signal undergoes serial-to-parallel conversion, the processing clock of each signal reaches hundreds of megahertz. It is difficult for the traditional synchronization method to synchronize such a high-speed signal; in addition, when the satellite and the ground station When the relative motion rate (dynamic rate) is large to a certain extent, the Doppler effect caused by it will bring about a large frequency offset, and the signal cannot be synchronized, which also makes the receiver unable to complete ranging and communication. Therefore, it is proposed A high-speed receiver and receiving method are developed to solve this problem, and high-speed signal synchronization is the core technology of this high-speed receiver and receiving method

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  • Synchronization device, synchronization method and high-speed receiver using the synchronization device
  • Synchronization device, synchronization method and high-speed receiver using the synchronization device

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Embodiment Construction

[0034] The technical scheme of the present invention will be further described below in conjunction with the drawings.

[0035] The high-speed receiver structure proposed by the present invention is as follows figure 1 Shown. A high-speed receiver in an integrated laser communication ranging system, including an analog-to-digital converter (ADC): converts the received analog signal into a digital signal; gigabit transceiver (GTH): serializes the ADC's digital signal Parallel conversion; synchronization device: parallel data frame capture, dynamic correction, and high-speed phase-locked loop tracking are performed on the parallel signal output by GTH to complete signal synchronization; ranging branch: distance measurement is achieved through the synchronization signal obtained by the synchronization device; and communication branch Road: The communication data is solved by the synchronization signal obtained by the synchronization device. The processing process of the received s...

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Abstract

The present invention provides a synchronizer of a laser communication distance measurement integration system, a synchronization method of a laser communication distance measurement integration system and a high-speed receiver by using the synchronizer. The high-speed receiver receives high-speed signals, an analog-digital converter (ADC) is used for sampling of the high-speed signals, the sampling data is sent into a Gigabit transceiver (GTH) to perform serial-parallel conversion, and the high-speed serial data is converted to multi-path parallel data with low rate; the parallel data is sent into the synchronizer for signal synchronization, the parallel data is subjected to steps such as parallel data frame capture, dynamic correction, high-speed phase-locked loop tracking and the like in the synchronizer so as to complete accurate synchronization of the high-speed signals through the receiver; and moreover, on the basis of the accurate synchronization of the signals, and a distance measurement result and communication data can be solved out through the distance measurement branch and the communication branch of the receiver. The clock load is reduced and the complexity of the hardware realization is effectively reduced while ensuring the accurate synchronization of signals and accurate distance measurement and communication result.

Description

Technical field [0001] The invention relates to a synchronization device, a synchronization method and a high-speed receiver using the synchronization device in an integrated laser communication ranging system, and belongs to the technical field of electronic communication and radar. Background technique [0002] The integrated laser communication and ranging system requires the use of lasers between space-based terminals (satellites) and ground stations, and between space-based terminals (satellites) and space-based terminals (satellites) to achieve the integrated functions of high-speed data transmission and high-precision ranging. That is to use the signal of the same channel to complete the two functions of communication and ranging at the same time, it is necessary to start from the similarities and differences of the two functions, and merge the calculation steps of the two as much as possible, save resources and power consumption, and construct an intensive system. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L7/00
CPCH04L7/0016H04L7/007H04L7/0079H04L7/0087
Inventor 王长红朱理辰卜祥元马永锋王继超
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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