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System and method for passive transmission of microwave frequency signals

A microwave frequency, passive transmission technology, applied in the field of data transmission, can solve the problem of inability to meet the precise transmission and comparison of time and frequency signals, and achieve the effect of passive compensation of phase noise

Active Publication Date: 2016-02-17
北京普测时空科技有限公司
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Problems solved by technology

[0004] However, the current stability of these transfer methods can only reach 10 days -15 magnitude, unable to meet the requirements of precise transmission and comparison of time-frequency signals

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  • System and method for passive transmission of microwave frequency signals
  • System and method for passive transmission of microwave frequency signals
  • System and method for passive transmission of microwave frequency signals

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0027] In order to compare the passive compensation optical fiber transmission phase noise method described in the present invention with the existing active compensation optical fiber transmission phase noise method, first refer to figure 1 The structure diagram of the existing microwave frequency signal transmission system that actively compensates the optical fiber phase noise is introduced.

[0028] Such as figure 1 As shown, the existing active compensation transmission system for microwave frequency signals includes: a launch compensation device, which is used to modulate the microwave frequency signal to be transmitted onto an optical signal for transmission through an optical fiber, and actively compensate the mic...

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Abstract

The invention discloses a system and method for passive transmission of microwave frequency signals. The system for passive transmission of the microwave frequency signals comprises an emission device and receiving compensating devices, wherein the emission device is used for simultaneously modulating a standard microwave frequency signal and an auxiliary microwave frequency signal to an optical signal so that the standard microwave frequency signal and the auxiliary microwave frequency signal can be transmitted through the same optical fiber, the receiving compensating devices are used for carrying out passive compensation on phase noise introduced by the optical fiber through a standard microwave frequency signal and an auxiliary microwave frequency signal, the standard microwave frequency signal and the auxiliary microwave frequency signal are received, are obtained through demodulation, and are respectively provided with the phase noise of the optical fiber, and finally standard microwave frequency signals of a frequency reference source of the transmission device are locked on recurrence phases of the receiving compensating devices. According to the technical scheme, a microwave frequency signal active transmission technology is supplemented and is improved. When the technical scheme of the system and method for passive transmission of the microwave frequency signals is combined, networked transmission of the microwave frequency signals can be achieved, and the range of application of the microwave frequency signals is expanded.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a passive transmission system and method for microwave frequency signals. Background technique [0002] At present, there are three main directions in the research and application of time-frequency systems. One is the preparation of the time frequency source, which is used to provide the base / standard of time. The second is the transmission system of time and frequency. With a good reference source, it is necessary to accurately release the time and frequency. Therefore, the quality of the time-frequency transmission system directly determines the quality of the time-frequency signal received by the user terminal. This problem is especially important in ultra-long-distance time-frequency signal transmission. The third is the reception of time-frequency signals. At present, the technology in this field is relatively mature, such as GPS receivers and the like. [0003] For refe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/25H04B10/60H04J14/02
Inventor 王力军王波白钰高超
Owner 北京普测时空科技有限公司
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