CN117786508A - Optical fiber unidirectional time-frequency synchronous signal transmission method - Google Patents
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Abstract
The invention discloses a fiber unidirectional time-frequency synchronous signal transmission method, which relates to the technical field of signal transmission and solves the technical problem that signals can interfere with each other during synchronous transmission, according to the specific characteristics of time-frequency signals, a group of regular waveforms which can represent inherent characteristics of the signals are preferentially determined from corresponding signal spectrograms, then the value difference is confirmed based on the regular waveforms, and then preliminary classification is carried out according to the generated value difference, so that a plurality of time-frequency signals are divided into a plurality of classified signals; and determining a signal with high similarity based on a trend interval of a regular waveform of the signal, and drawing the signal into a signal capable of being synchronously transmitted, and generating a synchronous transmission packet, wherein the synchronous transmission packet has high similarity, so that mutual interference can not occur, the overall quality of a time-frequency signal of the synchronous transmission packet is ensured, and a group of optimal transmission channels are determined based on a corresponding value difference and past data conditions in the synchronous transmission packet, so that stable transmission of the corresponding synchronous transmission packet is ensured.
Description
Technical Field
The invention belongs to the technical field of signal transmission, and particularly relates to an optical fiber unidirectional time-frequency synchronous signal transmission method.
Background
The optical fiber unidirectional time-frequency synchronous signal is a technology for transmitting a time-frequency signal from a transmitting end to a receiving end by using an optical fiber as a transmission medium; the technology has the advantages of high precision, strong anti-interference capability and the like, and is widely applied to the fields of electric power, communication and the like;
at present, the implementation schemes of optical fiber unidirectional time-frequency synchronous signals are mainly divided into three types: an optical fiber time frequency transmission scheme based on an optical frequency comb, an optical fiber microwave time frequency transmission scheme and an optical fiber optical frequency transmission scheme.
The patent publication No. CN110995389B discloses a method, a device, a medium and equipment for transmitting optical fiber unidirectional time-frequency synchronous signals. In the method, a high-precision time electric signal and a high-precision frequency electric signal of a public network are correspondingly converted into a time optical signal and a frequency optical signal through a photoelectric converter; multiplexing the time optical signal and the frequency optical signal into the same single optical fiber link through an optical multiplexer; recovering a high-precision time optical signal and a high-precision frequency optical signal from the single optical fiber link through a demultiplexer; the high-precision time optical signal and the high-precision frequency optical signal are correspondingly converted into a high-precision time electric signal and a high-precision frequency electric signal through the photoelectric converter. Under the condition that time-frequency taming equipment is not required to be added on an isolation network side, a public network with a close physical distance is selected as the isolation network to conduct single-fiber and same-fiber unidirectional low-loss high-precision time-frequency signal import, and when the isolation network is used, the imported time-frequency electric signal is directly used by frequency equipment to conduct time-frequency synchronization with the public network.
The prior art is mainly aimed at the conversion condition of signals in the transmission process to ensure the overall quality of the corresponding signals, but when different time-frequency signals are transmitted in a synchronous transmission mode, because specific signal spectrums are fixed between each group of signals, if the spectrum difference between two time-frequency signals is overlarge, the condition of mutual interference can be easily caused, so that the signal quality is poor, and the transmission effect is poor.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art; therefore, the invention provides an optical fiber unidirectional time-frequency synchronous signal transmission method, which is used for solving the technical problem that when different time-frequency signals are transmitted in a synchronous transmission mode, because specific signal spectrums are fixed between each group of signals, if the spectrum difference between two time-frequency signals is too large, the mutual interference can be easily caused.
To achieve the above object, an embodiment according to a first aspect of the present invention provides a method for transmitting unidirectional time-frequency synchronization signals of an optical fiber, including:
determining a group of processing stages, confirming a time-frequency signal spectrogram to be transmitted in the processing stages, and confirming a regular waveform based on the time-frequency signal spectrogram, wherein the substeps comprise the following steps:
confirming turning points in the corresponding time-frequency signal spectrogram, wherein the overall slopes of line segments before and after the turning points are opposite;
confirming a line segment between the first group of turning points and the third group of turning points, taking the line segment as a reference line segment, and judging whether the reference line segment and the rear end line segment can be overlapped or not:
if the line segments can be overlapped, the line segments are marked as regular waveforms corresponding to the time-frequency signals;
if the two reference line segments are not overlapped, combining the reference line segments with the line segments between the first group of turning points at the rear end of the reference line segments to generate a further group of reference line segments, analyzing whether the overlapping condition exists again based on the reference line segments until the regular waveform is determined, and otherwise, generating an error signal;
based on the regular waveforms of different time-frequency signals in the same processing stage, confirming the value difference of the corresponding time-frequency signals, and carrying out preliminary classification on a plurality of groups of time-frequency signals in the processing stage based on the value difference to form a plurality of similar value differences, wherein the substep comprises the following steps:
the sub-step of initially classifying the time-frequency signal based on the value difference comprises:
from each regular waveform, determining the highest point and the lowest point of the fluctuation, and adopting the following frequency parameters based on the highest point and the lowest point: value difference = highest point frequency parameter-lowest point frequency parameter determining value difference corresponding to regular waveform of time-frequency signal;
arranging the confirmed value differences of the time-frequency signals in a form from small to large to generate an arrangement value difference set;
classifying the set of arranged value differences according to the form that the phase difference value is Y1, wherein Y1 is a preset value, calibrating the value differences belonging to the interior of [ Z1, Z1+Y1] to be the same class value differences based on a first group value difference Z1 of the set of arranged value differences, calibrating the value differences belonging to the interior of (Z1 +Y1, Z1 +2Y1) to be the same class value differences, and so on, classifying a plurality of groups of value differences of the set of arranged value differences to be a plurality of groups of same class value differences, wherein each same class value difference is provided with a different mark;
based on different regular waveforms in the same class value difference, determining trend intervals of corresponding regular waveforms, based on superposition conditions of trend intervals among different regular waveforms, determining time-frequency signals capable of synchronous transmission, binding the time-frequency signals, and generating synchronous transmission packets, wherein the substep comprises the following steps:
determining trend trends of different regular waveforms in the same value difference, determining slopes of adjacent points of the regular waveforms based on numerical value differences and time differences of the adjacent points of the regular waveforms, wherein the slopes k=deltay/deltax, delta is a difference value between a next point and a previous point, and generating trend intervals of the corresponding regular waveforms based on minimum values and maximum values of a plurality of groups of slopes generated by the corresponding regular waveforms;
comparing the multiple groups of trend intervals in a coincidence degree, calibrating time-frequency signals of the trend intervals with the coincidence degree more than 90% as synchronous signals, and directly generating synchronous transmission packets;
if the overlap ratio is less than or equal to 90%, calibrating and binding are not performed;
determining the mean value locking average difference based on the value difference of the regular waveform of the synchronous transmission packet, determining a group of optimal channels based on the average difference, and subsequently transmitting the synchronous transmission packet according to the signal, wherein the sub-steps comprise:
determining signal transmission data for transmitting a corresponding numerical time-frequency signal from past data based on the determined mean difference, wherein the signal transmission data comprises signal quality and a corresponding signal rate transmission waveform;
extracting a signal rate transmission waveform with the signal quality reaching the standard and calibrating the signal rate transmission waveform as a standard waveform, wherein when the signal quality is more than Y2, Y2 is a preset value, which represents that the signal quality reaches the standard, and otherwise, waveform calibration is not performed;
based on the standard waveform, sequentially confirming turning points of the standard waveform, wherein the turning points are determined in the same manner as those of the spectrogram turning points, and confirming waveform parameters among different turning points, and marking the waveform parameters as C i Wherein i represents different turning points, and i=1, 2, … … and n, wherein when i=1, it represents the waveform parameter of the first set of turning points, and when i is n, it represents the waveform parameter of the last set of turning points, and pd= |c is adopted 1 -C 2 |+|C 2 -C 3 |+……+|C n-1 -C n The evaluation value PD of the waveform corresponding to the standard is determined;
and selecting a group of standard waveforms with minimum evaluation values from the evaluation values PD of the standard waveforms, determining channel parameters of the standard waveforms, calibrating the channel parameters as optimal channels, and transmitting synchronous transmission packets.
Compared with the prior art, the invention has the beneficial effects that: according to the specific characteristics of the time-frequency signals, a group of regular waveforms which can represent the inherent characteristics of the time-frequency signals are preferentially determined from the corresponding signal spectrograms, the value difference is confirmed based on the regular waveforms, and then preliminary classification is carried out according to the generated value difference, so that a plurality of time-frequency signals are divided into a plurality of classified signals;
determining a signal with high similarity based on a trend interval of a regular waveform of the signal, and drafting the signal into a signal capable of being synchronously transmitted, binding the signal to generate a synchronous transmission packet, wherein the synchronous transmission packet has high similarity of the synchronously transmitted signal, so that mutual interference can not occur, and the overall quality of a time-frequency signal of the synchronous transmission packet is ensured;
based on the corresponding value difference in the synchronous transmission packet and the past data condition, a group of optimal transmission channels are determined, so that stable transmission of the corresponding synchronous transmission packet is ensured, the integral quality of the synchronous signal in the transmission process is ensured, and the integral transmission effect of the time-frequency signal is improved.
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FIG. 1 is a schematic flow chart of the method of the invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, the present application provides a method for transmitting unidirectional time-frequency synchronization signals of an optical fiber, which includes:
step one, determining a group of processing stages, confirming a time-frequency signal spectrogram to be transmitted in the processing stages, and confirming a regular waveform based on the time-frequency signal spectrogram, wherein the processing stages are a duration stage which can be understood as a time period, are preset values and are generally set by operators, and the values are generally 8 hours or 12 hours;
optionally, the time-frequency signal is a deterministic signal and a non-stationary random signal for the time variation of the frequency spectrum, which maps a one-dimensional time-domain signal X (n) or a frequency-domain signal X (e≡jw)) into two-bit signals on a time-frequency plane, and each group of signals has a corresponding spectrogram, which can be understood as a waveform of the corresponding signal and can be directly obtained;
the sub-step of determining the corresponding time-frequency signal regular waveform in the first step comprises the following steps:
confirming the turning points in the corresponding time-frequency signal spectrogram, wherein the overall slopes of the line segments before and after the turning points are opposite, for example: in a certain spectrogram, when the trend of the front end line segment rises upwards, namely when the slope is positive, if the middle point is a turning point, the trend of the rear end line segment drops downwards, namely the slope is negative, the point between the two line segments is a turning point, and the trend of the two groups of line segments before and after the turning point is opposite;
confirming a line segment between the first group of turning points and the third group of turning points, taking the line segment as a reference line segment, and judging whether the reference line segment and the rear end line segment can be overlapped or not:
if the line segments can be overlapped, the line segments are marked as regular waveforms corresponding to the time-frequency signals;
if the two reference line segments are not overlapped, combining the reference line segments with the line segments between the first group of turning points at the rear end of the reference line segments to generate a further group of reference line segments, analyzing whether the overlapping condition exists again based on the reference line segments until the regular waveform is determined, otherwise, generating error signals and displaying the error signals on an external display end;
examples: if the corresponding regular waveform cannot be confirmed, the problem exists in the time-frequency signal, the whole spectrogram is irregular, the time-frequency signal does not reach the standard, or the signal interfering with each other exists in the time-frequency signal, so that the fluctuation occurs in the time-frequency signal, the corresponding regular waveform cannot be confirmed, the situation needs intervention of external personnel and processing, the initial point position of the time-frequency signal is pseudo-point position, a section of fluctuation section exists, the same waveform cannot be confirmed in the rear end line section, the initial point is required to be confirmed again by an operator, and under the normal processing condition, the corresponding regular waveform can be confirmed in the time-frequency signal spectrogram.
Step two, confirming the value difference of the corresponding time-frequency signals based on the regular waveforms of different time-frequency signals in the same processing stage, primarily classifying a plurality of groups of time-frequency signals in the processing stage based on the value difference to form a plurality of similar value differences, particularly, primarily classifying the time-frequency signals according to the value difference, wherein the value difference can obviously show the fluctuation condition and the fluctuation amplitude of the corresponding time-frequency signals, and if the fluctuation amplitude and the fluctuation condition of the corresponding time-frequency signal device are basically consistent, the corresponding time-frequency signals can be classified in the same set or the same partition, and the classification form is not limited by the set or the partition or even other modes;
the sub-step of initially classifying the time-frequency signal based on the value difference comprises:
from each regular waveform, determining the highest point and the lowest point of the fluctuation, and adopting the following frequency parameters based on the highest point and the lowest point: value difference = highest point frequency parameter-lowest point frequency parameter determining value difference corresponding to regular waveform of time-frequency signal, for example: the highest point and the lowest point exist in each regular waveform, each point position can determine the frequency value or the intensity value of the frequency value from the spectrogram, and the value difference can be directly determined based on the difference value between the two values, so that the determination mode is simpler;
arranging the confirmed value differences of the time-frequency signals in a form from small to large to generate an arrangement value difference set;
according to the form that the phase difference value is Y1, wherein Y1 is a preset value, the specific value is determined by an operator according to experience, the arrangement value difference set is classified, the belonging value differences belonging to the [ Z1, Z1+ Y1] are calibrated to be the same class value differences based on a first group of value differences Z1 of the arrangement value difference set, the belonging value differences belonging to the (Z1 + Y1, Z1+2Y 1) are calibrated to be the same class value differences, and the like, a plurality of groups of value differences of the arrangement value difference set are classified to be a plurality of groups of same class value differences, and each same class value difference is provided with different marks;
examples: assuming that the set of the permutation value differences is {1, 2, 3, 4, 5, 6, 7, 8, 9}, where Y1 takes a value of 2, then according to the classification condition of the above form, the first group of intervals can be determined as [ z1=1, z1+y1=3 ], that is [1,3], then 1, 2, 3 in the set belong to the same class value difference, the following 4, 5, 6 belong to one same class value difference, the following 7, 8, 9 also belong to one same class value difference, and the classification condition is that the regular waveforms with small value differences are subjected to fluctuation analysis to determine the fluctuation similarity.
Step three, based on different regular waveforms in the same class value difference, determining trend intervals corresponding to the regular waveforms, based on superposition conditions of the trend intervals among different regular waveforms, determining time-frequency signals capable of synchronous transmission, binding the time-frequency signals, and generating synchronous transmission packets, for example: analyzing the trend, namely, confirming the specific trend of the regular waveform, and based on the specific trend, if most of the time-frequency signals are similar, the corresponding time-frequency signals can be used as synchronous transmission signals, and the spectrograms are basically similar, so that the two frequency-frequency signals basically do not generate any interference, and the specific quality of two or more time-frequency signals is not influenced;
optionally, the sub-step of generating the synchronous transmission packet comprises:
determining trend trends of different regular waveforms in the same value difference, determining slopes of adjacent points of the regular waveforms based on numerical value differences and time differences of the adjacent points of the regular waveforms, wherein the slopes k=deltay/deltax, delta is a difference value between a later point and a former point, y is a vertical coordinate parameter, namely frequency, x is a transverse coordinate parameter, namely time, and generating trend intervals of the corresponding regular waveforms based on minimum values and maximum values of a plurality of groups of slopes generated by the corresponding regular waveforms;
and (3) comparing the overlapping ratios of a plurality of groups of trend sections, calibrating a time-frequency signal of the trend section with the overlapping ratio more than 90% as a synchronous signal, and directly generating a synchronous transmission packet, otherwise, not calibrating and not binding, specifically, the overlapping ratio of the trend section is the overlapping ratio of two trend sections or a plurality of trend sections, for example, three trend sections have an overlapping region, the overlapping ratio of any one of the three trend sections is more than 90%, then the calibration can be directly carried out, otherwise, the calibration can not be carried out, and if the overlapping ratio of any of the trend sections can reach 90%, the calibration can also be carried out, so that the synchronous signal can be judged.
Determining the average value locking mean difference based on the value difference of the regular waveform of the synchronous transmission packet, determining a group of optimal channels based on the mean difference, and subsequently transmitting the synchronous transmission packet according to the signal to ensure that the corresponding time-frequency signal can achieve the effect of synchronous transmission;
optionally, in the fourth step, the sub-steps of determining the optimal channel and transmitting are:
determining signal transmission data for transmitting a time-frequency signal with a corresponding value (equal to the average difference) from past data based on the determined average difference, wherein the signal transmission data comprise signal quality and a corresponding signal rate transmission waveform, the signal quality is generally given by a corresponding processing model, when the corresponding processing model receives the corresponding time-frequency signal, the quality of the time-frequency signal is determined based on the feedback speed of the time-frequency signal and the comparison result with a previous spectrogram, a designated quality score is generally given, when the quality score does not reach the standard, a corresponding signal is generated and displayed, and intervention of an external person is performed to adjust the time-frequency signal so as to improve the overall quality of the time-frequency signal;
extracting a signal rate transmission waveform with the standard signal quality and calibrating the signal rate transmission waveform as the standard waveform, specifically, when the signal quality is more than Y2, Y2 is a preset value, and is generally planned according to experience by an operator to represent that the signal quality is standard, otherwise, the signal quality is not standard;
based on the standard waveform, sequentially confirming turning points of the standard waveform, wherein the turning points are determined in the same manner as those of the spectrogram turning points, and confirming waveform parameters among different turning points, and marking the waveform parameters as C i Wherein i represents different turning points, and i=1, 2, … … and n, wherein when i=1, it represents the waveform parameter of the first set of turning points, and when i is n, it represents the waveform parameter of the last set of turning points, and pd= |c is adopted 1 -C 2 |+|C 2 -C 3 |+……+|C n-1 -C n The evaluation value PD of the waveform corresponding to the standard is determined;
and selecting a group of standard waveforms with minimum evaluation values from the evaluation values PD of the standard waveforms, determining channel parameters of the standard waveforms, calibrating the channel parameters as optimal channels, and transmitting synchronous transmission packets.
Specifically, in order to ensure that the synchronization signals in the synchronization transmission packets can be normally transmitted without mutual interference, corresponding average differences are locked by determining the value differences, then the past transmission data are determined based on the average differences, the waveform and other parameters of the data are determined from the transmission data, a group of optimal waveforms are evaluated, and then an optimal channel is determined based on the determination of the optimal waveforms, so that the stable transmission of the corresponding synchronization transmission packets is ensured, the overall quality of the synchronization signals in the transmission process is ensured, and the overall transmission effect of the time-frequency signals is improved.
Example two
The method also comprises a transmission mode aiming at the time-frequency signals, wherein the time-frequency signals are transmitted by adopting standard preset channels, the standard preset channels are drawn in advance by operators according to experience, and the condition of mutual interference can not occur when the single group of time-frequency signals are transmitted, so that the transmission is stable, and the transmission can be directly carried out through the preset channels in the corresponding optical fibers.
As a further embodiment of the present application:
the method also comprises a specific system correspondingly implemented to realize the transmission of the optical fiber unidirectional time-frequency synchronous signal. The system may comprise the following main parts:
the stage processing module: this module is responsible for determining a set of processing stages and validating the time-frequency signal spectrogram of each stage. Based on these spectrograms, the module will further confirm its regular waveform.
And a value difference calculation module: the module is used for confirming the value difference of the corresponding time-frequency signals based on the regular waveforms of different time-frequency signals in the same processing stage; then, based on the value differences, the time-frequency signals of the groups in the processing stage are initially classified to form a plurality of similar value differences.
Trend interval determining module: this module will determine trend intervals of their corresponding regular waveforms from the different regular waveforms within the same class of value differences determined in the "value difference calculation module". The module will then determine the time-frequency signals that can be transmitted synchronously based on the coincidence of trend intervals between different regular waveforms. These signals will be bundled together to generate a synchronous transport packet.
The optimal channel determining module: this module will determine its mean-locked difference based on the value differences of the regular waveforms within the synchronous transport packet. The module will then determine a set of best channels based on this mean difference.
The partial data in the formula are all obtained by removing dimension and taking the numerical value for calculation, and the formula is a formula closest to the real situation obtained by simulating a large amount of collected data through software; the preset parameters and the preset threshold values in the formula are set by those skilled in the art according to actual conditions or are obtained through mass data simulation.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (7)
1. The optical fiber unidirectional time-frequency synchronous signal transmission method is characterized by comprising the following steps of:
determining a group of processing stages, confirming a time-frequency signal spectrogram to be transmitted in the processing stages, and confirming a regular waveform based on the time-frequency signal spectrogram;
confirming the value difference of the corresponding time-frequency signals based on the regular waveforms of different time-frequency signals in the same processing stage, and primarily classifying a plurality of groups of time-frequency signals in the processing stage based on the value difference to form a plurality of similar value differences;
determining trend intervals of corresponding regular waveforms based on different regular waveforms in the similar value differences, determining time-frequency signals capable of synchronous transmission based on superposition conditions of the trend intervals among different regular waveforms, and binding the time-frequency signals to generate synchronous transmission packets;
and determining the average value locking mean difference based on the value difference of the regular waveform of the synchronous transmission packet, determining a group of optimal channels based on the mean difference, and transmitting the synchronous transmission packet according to the signal.
2. The method for transmitting unidirectional time-frequency synchronization signals of an optical fiber as claimed in claim 1, wherein the substep of confirming the regular waveform based on the time-frequency signal spectrogram comprises:
confirming turning points in the corresponding time-frequency signal spectrogram, wherein the overall slopes of line segments before and after the turning points are opposite;
confirming a line segment between the first group of turning points and the third group of turning points, taking the line segment as a reference line segment, and judging whether the reference line segment and the rear end line segment can be overlapped or not:
if the line segments can be overlapped, the line segments are marked as regular waveforms corresponding to the time-frequency signals;
if the two reference line segments are not overlapped, combining the reference line segments with the line segments between the first group of turning points at the rear end of the reference line segments to generate a further group of reference line segments, analyzing whether the overlapping condition exists again based on the reference line segments until the regular waveform is determined, and otherwise, generating an error signal.
3. The method for transmitting unidirectional time-frequency synchronization signals of an optical fiber as claimed in claim 1, wherein the sub-step of initially classifying the groups of time-frequency signals of the present processing stage based on the value differences comprises:
from each regular waveform, determining the highest point and the lowest point of the fluctuation, and adopting the following frequency parameters based on the highest point and the lowest point: value difference = highest point frequency parameter-lowest point frequency parameter determining value difference corresponding to regular waveform of time-frequency signal;
arranging the confirmed value differences of the time-frequency signals in a form from small to large to generate an arrangement value difference set;
according to the form that the phase difference value is Y1, wherein Y1 is a preset value, sorting the arrangement value difference set, calibrating the belonging value differences belonging to the interior of [ Z1, Z1+Y1] to be the same class value differences based on the first group value differences Z1 of the arrangement value difference set, calibrating the belonging value differences belonging to the interior of (Z1 +Y1, Z1 +2Y1) to be the same class value differences, and so on, sorting a plurality of groups of value differences of the arrangement value difference set to be a plurality of groups of same class value differences, wherein each same class value difference is provided with a different mark.
4. The method for transmitting unidirectional time-frequency synchronization signals of an optical fiber as claimed in claim 1, wherein the sub-step of generating the synchronization transmission packet based on the coincidence of trend intervals between different regular waveforms comprises:
determining trend trends of different regular waveforms in the same value difference, determining slopes of adjacent points of the regular waveforms based on numerical value differences and time differences of the adjacent points of the regular waveforms, wherein the slopes k=deltay/deltax, delta is a difference value between a next point and a previous point, and generating trend intervals of the corresponding regular waveforms based on minimum values and maximum values of a plurality of groups of slopes generated by the corresponding regular waveforms;
and (3) comparing the multiple groups of trend intervals, calibrating time-frequency signals of the trend intervals with the contact ratio more than 90% as synchronous signals, and directly generating synchronous transmission packets.
5. The method for transmitting unidirectional time-frequency synchronization signals of an optical fiber as claimed in claim 1, wherein the sub-step of generating the synchronization transmission packet based on the coincidence of trend intervals between different regular waveforms further comprises:
if the overlap ratio is less than or equal to 90%, calibrating and binding are not performed.
6. The method of claim 1, wherein the sub-step of determining the best channel based on the mean difference comprises:
determining signal transmission data for transmitting a corresponding numerical time-frequency signal from past data based on the determined mean difference, wherein the signal transmission data comprises signal quality and a corresponding signal rate transmission waveform;
extracting a signal rate transmission waveform with the signal quality reaching the standard and calibrating the signal rate transmission waveform as a standard waveform, wherein when the signal quality is more than Y2, Y2 is a preset value, which represents that the signal quality reaches the standard, and otherwise, waveform calibration is not performed;
based on the standard waveform, sequentially confirming turning points of the standard waveform, wherein the turning points are determined in the same manner as those of the spectrogram turning points, and confirming waveform parameters among different turning points, and marking the waveform parameters as C i Wherein i represents different turning points, and i=1, 2, … …, n, pd= |c is adopted 1 -C 2 |+|C 2 -C 3 |+……+|C n-1 -C n The evaluation value PD of the waveform corresponding to the standard is determined;
and selecting a group of standard waveforms with minimum evaluation values from the evaluation values PD of the standard waveforms, determining channel parameters of the standard waveforms, calibrating the channel parameters as optimal channels, and transmitting synchronous transmission packets.
7. The method for transmitting unidirectional time-frequency synchronization signals of an optical fiber according to claim 1, further comprising a transmission mode for a single group of time-frequency signals:
the time-frequency signal is transmitted by adopting a standard preset channel, and the standard preset channel is drawn up by an operator according to experience in advance.
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| CN117454829A (en) * | 2023-11-08 | 2024-01-26 | 美世乐(广东)新能源科技有限公司 | Circuit optimization system based on circuit topology model |
| CN117517926A (en) * | 2023-11-08 | 2024-02-06 | 江苏科睿坦电子科技有限公司 | RFID chip sensitivity test method and system |
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