Time-frequency signal synthesis device based on multi-source time-frequency signal fusion
A time-frequency and signal fusion technology
Active Publication Date: 2021-12-03
NAT INST OF METROLOGY CHINA
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Problems solved by technology
[0004] At the intersection of multiple optical fiber time-frequency transmission links, there is still a lack of effective technologies and products for how to reliably and effectively process time-frequency signals
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[0021] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details.
[0022] figure 1 It is a schematic diagram of a block diagram of a time-frequency signal synthesis device based on multi-source time-frequency signal fusion according to the present invention, as figure 1 As shown, the integrated device carries out integrated processing to the signals of multiple sources, and each source outputs a frequency signal and a second pulse signal. The integrated device includes: a plurality of channels, and a part of channels are used to simultaneously input multiple frequency signals (frequency Signal 1, 2,..., n), a part of the channel is used to input multiple second pulse signals (second pulse signal 1, 2,..., n) at the same time, and the weighted average of multiple fre...
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The present invention provides a time-frequency signal synthesis device based on multi-source time-frequency signal fusion, which comprehensively processes signals from multiple sources, and each source outputs a frequency signal and a second pulse signal. The synthesis device includes: multiple channels, a part of channels It is used to input multiple frequency signals at the same time, and some channels are used to input multiple second pulse signals at the same time. The weighted average of multiple frequency signals transmitted through the channels is used as the standard frequency signal, and the average of multiple second pulse signals is obtained. The second pulse signal closest to the average second pulse is used as a reference signal, and the zero-crossing position of the standard frequency signal is used as the rising edge of the second pulse signal to generate multiple second pulse signals, and the second generated by the standard frequency signal closest to the reference signal The pulse signal is used as the second pulse signal of the output. The failure of a certain source in the upper stage of the above-mentioned comprehensive device will not cause direct interruption of the frequency signal and affect the high-precision transmission of time and frequency of the optical fiber in the next stage.
Description
technical field [0001] The present invention relates to the field of time-frequency technology, and more specifically, to a time-frequency signal synthesis device based on multi-source time-frequency signal fusion. Background technique [0002] At present, in the atomic time scale system, the frequency signal from the master clock is output after a slight jump (changing the frequency), and other atomic clock signals are only used for the frequency comparison control signal micro-step value. Once the main clock signal is interrupted, the micro-step output signal also If it is interrupted, the system reliability is poor. [0003] At present, there are commercial frequency standard synthesizers, and the sine wave signal is only used as a frequency signal. When performing synthesis, only the signal frequency value is used for weighted average processing. [0004] At the intersection of multiple optical fiber time-frequency transmission links, there is still a lack of effective ...
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IPC IPC(8): H04L7/00
CPCH04L7/0075
Inventor 林平卫
Owner NAT INST OF METROLOGY CHINA