Low-reflection grating OPGW (Optical Fiber Composite Overhead Ground Wire) galloping monitoring method, system and equipment and storage medium
Through the multiple reference input noise reduction processing of low reflectivity grating sensing array and adaptive filter, the problems of low signal processing efficiency and insufficient stability in OPGW dance monitoring are solved, and the dance monitoring with high signal-to-noise ratio is realized, ensuring the safety and stability of the transmission line.
Patent Information
- Application Number
- CN202410015036.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-07-25
AI Technical Summary
The existing fiber optic sensing technology faces the problems of low data processing efficiency and insufficient stability of fiber optic sensors in OPGW dance monitoring, especially in complex natural environments, it is difficult to effectively monitor and analyze dance signals.
Using a low reflectivity grating sensing array, the optical signal is divided into two beams through a coupler, input to the unbalanced interferometer and reference signal respectively, and a multiple reference input noise reduction process is performed using an adaptive filter, including phase and intensity noise suppression, to obtain a dance monitoring signal with a high signal-to-noise ratio.
The signal-to-noise ratio of OPGW dance monitoring is improved, the stability and accuracy are ensured in complex environments, and the safe operation of transmission lines is provided with reliable guarantees.
Smart Images
Figure CN120369091A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wire adjustment, and particularly to a method, system, device, and storage medium for monitoring the galloping of a low-reflection grating OPGW. Background Art
[0002] Optical fiber sensing technology provides a reliable means for monitoring the galloping of OPGW with its capabilities of high-precision monitoring, real-time information acquisition, strong anti-electromagnetic interference, and long-distance monitoring. However, this technology also faces two major challenges: one is how to efficiently process and analyze a large amount of galloping monitoring data to obtain valuable information, and the other is how to ensure the stability and continuity of optical fiber sensors in complex natural environments. Summary of the Invention
[0003] The purpose of this application is to overcome the above-mentioned prior art and provide a method, system, device, and storage medium for monitoring the galloping of a low-reflection grating OPGW.
[0004] This application provides a method for monitoring the galloping of a low-reflection grating OPGW, including:
[0005] Laying a grating sensing array with a low reflectivity within the span of the galloping monitoring array of the OPGW transmission line. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler;
[0006] Inputting one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and extracting a reference signal 2 from the other optical signal;
[0007] Using the reference signal 1 and the phase signal as the reference input and the original input of an adaptive filter 1 respectively for filtering processing to obtain a phase noise suppression signal;
[0008] Using the phase noise suppression signal and the reference signal 2 as the original input and the reference input of an adaptive filter 2 respectively for filtering processing to obtain an intensity noise suppression signal;
[0009] Using the intensity noise suppression signal as the monitoring signal for the icing galloping of the low-reflection grating OPGW.
[0010] Optionally, inputting one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, including:
[0011] After the light speed enters the unbalanced interferometer, the same optical path pulse signals will interfere, pick up the galloping signals coupled into the OPGW transmission line by the external environment, obtain the phase change amount through array sensing demodulation, and divide the signals based on the demodulated phase change amount into two groups of signals, namely the reference signal 1 and the monitoring signal.
[0012] Optionally, the expression for obtaining the phase signal is as follows:
[0013]
[0014] where A is the average optical power of the output light, B is the maximum intensity of the interference fringes, z is the index number of the output signal, ΔL and Δn are the fiber length and refractive index change respectively, and λ is the wavelength of the light.
[0015] Optionally, the expression for the phase noise suppression signal is as follows:
[0016]
[0017] where x(i) is the original noisy signal, y(i) is the reference signal, z(i) is the error signal, p(i) is the output signal of the digital filter, w j (i) is the j-th value of the filter weight coefficient vector, y(i - 1) is the value of y(i) at the j-th sampling point before the i-th moment, φ n2 (t) is the phase change amount caused by the environmental noise at the detection sensor, φ n1 (t) is the phase change amount caused by the environmental noise at the reference sensor, and p(i) is the output signal of the filter and the error signal of z(i).
[0018] This application also provides a low-reflection grating OPGW galloping monitoring system, including:
[0019] A monitoring module, which is arranged in the span of the OPGW transmission line galloping monitoring array by using a low-reflectivity grating sensing array. When the low-reflection grating reflects the optical signal, the optical signal is split into two beams by a coupler;
[0020] An interference module, which is used to input one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and extract a reference signal 2 from the other optical signal;
[0021] A first filtering module, which is used to respectively use the reference signal 1 and the phase signal as the reference input and the original input of an adaptive filter 1 for filtering processing to obtain a phase noise suppression signal;
[0022] A second filtering module, which is used to respectively use the phase noise suppression signal and the reference signal 2 as the original input and the reference input of an adaptive filter 2 for filtering processing to obtain an intensity noise suppression signal;
[0023] A signal module, which is used to use the intensity noise suppression signal as the low-reflection grating OPGW icing galloping monitoring signal.
[0024] Optionally, the interference module inputs one of the optical signal into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, including:
[0025] After the light speed enters the unbalanced interferometer, the same optical path pulse signals will interfere, pick up the galloping signals coupled into the OPGW transmission line by the external environment, obtain the phase change amount through array sensing demodulation, and divide the phase change amount obtained by demodulation into two groups of signals, namely the reference signal 1 and the monitoring signal.
[0026] Optionally, the expression for obtaining the phase signal is as follows:
[0027]
[0028] Wherein, A is the average optical power of the output light, B is the maximum intensity of the interference fringes, z is the index number of the output signal, ΔL and Δn are the fiber length and refractive index change respectively, and λ is the wavelength of the light.
[0029] Optionally, the expression for the phase noise suppression signal is as follows:
[0030]
[0031] Wherein, x(i) is the original noisy signal, y(i) is the reference signal, z(i) is the error signal, p(i) is the output signal of the digital filter, w j (i) is the j-th value of the filter weight coefficient vector, y(i - 1) is the value of y(i) at the j-th sampling point before the i-th moment, φ n2 (t) is the phase change amount caused by the environmental noise at the detection sensor, φ n1 (t) is the phase change amount caused by the environmental noise at the reference sensor, and p(i) is the output signal z(i) of the filter error signal.
[0032] This application also provides a galloping monitoring device for OPGW based on a low-reflection grating, including:
[0033] A memory for storing the computer-executable program of the above-mentioned galloping monitoring method for OPGW based on a low-reflection grating;
[0034] A processor is configured to retrieve the computer-executable program from the memory and execute the following steps: A grating sensing array with low reflectivity is arranged within the span of the OPGW transmission line dancing monitoring array. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler. One of the optical signals is input into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and a reference signal 2 is extracted from the other optical signal. The reference signal 1 and the phase signal are respectively used as the reference input and the original input of an adaptive filter 1 for filtering to obtain a phase noise suppression signal. The phase noise suppression signal and the reference signal 2 are used as the original input and the reference input of an adaptive filter 2 for filtering to obtain an intensity noise suppression signal. The intensity noise suppression signal is used as the OPGW icing and dancing monitoring signal of the low-reflection grating.
[0035] The present application also provides a storage medium storing a computer-executable program, which is configured to be retrieved by a processor to execute the steps of the above-mentioned OPGW dancing monitoring method based on a low-reflection grating.
[0036] The beneficial effects of the present application are:
[0037] The present application provides an OPGW dancing monitoring method based on a low-reflection grating, including: A grating sensing array with low reflectivity is arranged within the span of the OPGW transmission line dancing monitoring array. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler. One of the optical signals is input into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and a reference signal 2 is extracted from the other optical signal. The reference signal 1 and the phase signal are respectively used as the reference input and the original input of an adaptive filter 1 for filtering to obtain a phase noise suppression signal. The phase noise suppression signal and the reference signal 2 are used as the original input and the reference input of an adaptive filter 2 for filtering to obtain an intensity noise suppression signal. The intensity noise suppression signal is used as the OPGW icing and dancing monitoring signal of the low-reflection grating. Based on a quasi-distributed sensing array of low-reflection fiber gratings, the present application improves the signal-to-noise ratio of the monitoring signal and solves the problem of extracting dancing signals under complex natural environmental conditions. At the same time, by optimizing the data processing and analysis algorithms, it provides a more reliable guarantee for the safe operation of the transmission line. Description of the Drawings
[0038] Figure 1 is a schematic diagram of the low-reflection grating in the present application.
[0039] Figure 2 is a schematic diagram of the OPGW dancing monitoring process in the present application.
[0040] Figure 3 is a schematic diagram of the monitoring data processing process in the present application.
[0041] Figure 4 It is a schematic diagram of the demodulation monitoring result of the adaptive filter 1 in this application.
[0042] Figure 5 It is a schematic diagram of the demodulation monitoring result of the adaptive filter 2 in this application. Specific embodiments
[0043] The following further describes this application with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this application and implement it.
[0044] The following content is all examples of the specific implementation process provided to detail the technical solution to be protected by this application. However, this application can also be implemented in other ways different from the described ones. Those skilled in the art can, under the guidance of the concept of this application, adopt different technical means to implement this application. Therefore, this application is not limited by the following specific embodiments.
[0045] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, a method for monitoring the galloping of a low-reflection grating OPGW includes the following steps:
[0046] S101 A grating sensing array with a low reflectivity is arranged in the span of the OPGW transmission line galloping monitoring array. When the low-reflection grating reflects the optical signal, the optical signal is split into two beams by a coupler.
[0047] In this application, a narrow-linewidth laser emits pulsed light, and this pulsed light is guided by the circulator 1 into the span of the OPGW transmission line galloping monitoring array. A grating sensing array with a low reflectivity (including grating 1 to grating n) is specifically arranged in the span to capture and sense the galloping signal on the OPGW line.
[0048] When the optical signal reflected by the weak-reflection grating returns, it will first pass through the coupler 1. The function of this coupler 1 is to split the returned optical signal into two beams. One of the optical signals is guided to an unbalanced interferometer (with a coupler 2, a Faraday rotator 1, and a Faraday rotator 2 inside) for interference and extraction of the galloping signal, while the other optical signal is used to extract the reference signal 2.
[0049] This design not only ensures the efficient utilization of the optical signal, but also enhances the stability and accuracy of the system by adopting multiple reference inputs. In this way, the system can more accurately monitor and identify the galloping signal on the OPGW line, thereby providing more reliable galloping monitoring data and providing strong guarantee for the safe operation of the power transmission line.
[0050] S102 Input one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and extract a reference signal 2 from the other optical signal.
[0051] When the light used for interference continues to propagate along the path of the circulator 2 and enters the unbalanced interferometer, the pulse signals with the same optical path will interfere within the interferometer. This process can accurately pick up the signals related to the galloping of the OPGW transmission line in the external environment.
[0052] Within the unbalanced interferometer, the galloping signal undergoes specific array sensing demodulation processing to convert the information in the optical signal into a phase change amount. This demodulation process can accurately reflect the galloping situation on the transmission line.
[0053] Based on the phase change amount obtained after demodulation, the system further divides it into two groups of signals: a reference signal 1 and a monitoring signal (the above-mentioned galloping signal). Among them, the reference signal 1 is mainly used to provide a stable reference so that the system can accurately identify and measure the phase change. The monitoring signal represents the actual galloping signal and is used to reflect the galloping state on the OPGW line.
[0054] This design ensures that the system can accurately capture and analyze the galloping signal, and at the same time improves the stability and accuracy of the measurement through the reference signal 1. This provides a reliable data basis for subsequent galloping monitoring and analysis, and helps to detect and solve potential line safety problems in a timely manner.
[0055] Specifically, for the weak reflection grating reflection signal without interference, it only contains the intensity information of the grating. At this time, this signal can be mathematically expressed as:
[0056] I1(t) = a0(t);
[0057] Among them, a0(t) represents the amplitude transformation function of the grating reflected light under the action of the environment. This means that the signal intensity reflected by the grating will fluctuate with the change of the environment.
[0058] When the monitoring signal further passes through the unbalanced interferometer and interferes, this signal is converted from an intensity signal to a phase signal. At this time, it can be expressed as:
[0059]
[0060] Among them, (A) represents the average optical power of the output light, (B) is the maximum intensity of the interference fringe, (z) is the index number of the output signal, ΔL and Δn are the fiber length and refractive index change respectively, and λ is the wavelength of the light.
[0061] After specific demodulation processing, the phase change amount can be extracted from the above formula. In this process, the phase of the monitoring signal is represented as φ s (t), while the phase of the reference signal 1 is φ n1 (t) (phase signal).
[0062] By comparing and analyzing these two phase signals, the system can accurately identify and measure the galloping situation on the OPGW transmission line, thus providing strong technical support for the safety and stability of power transmission.
[0063] S103 uses the reference signal 1 and the phase signal as the reference input and the original input of the adaptive filter 1 respectively, performs filtering processing, and obtains a phase noise suppression signal.
[0064] In this application, considering that the filtering process involves discrete data processing, the adaptive filter 1 plays a key role here. It takes the demodulated phase φ s (t) obtained by the sensor as the overall input end x(i), and takes the demodulated phase φ n1 (t) obtained by the reference sensor as the system noise input end y(i). In this way, the filter can achieve the suppression of phase noise and improve the quality of the signal.
[0065] The mathematical expression of the above processing process is as follows:
[0066]
[0067] Where:
[0068] x(i) represents the original noisy signal, which is composed of the demodulated phase of the monitoring sensor.
[0069] y(i) is the reference signal, which is composed of the demodulated phase of the reference sensor.
[0070] z(i) is the error signal, that is, the difference between the original signal and the filter output signal.
[0071] p(i) is the output signal of the digital filter.
[0072] w j (i) is the j-th value of the filter weight coefficient vector.
[0073] In the transmission optical path, since the monitoring sensor and the reference sensor are in a similar noise environment, the phase change amount φ n2 (t) caused by the environmental noise at the monitoring sensor and the phase change amount φ n1 (t) caused by the environmental noise at the reference sensor will have a strong correlation. Therefore, after being processed by the adaptive algorithm, the output signal (p(i)) of the filter will tend to the noise φ of the original signaln2 (t) approximation. This enables the output error signal (z(i)) to approach the desired output after iterative operations, thereby effectively suppressing phase noise.
[0074] S104 uses the phase noise suppression signal and reference signal 2 as the original input and reference input of adaptive filter 2, performs filtering processing, and obtains an intensity noise suppression signal.
[0075] The output signal of adaptive filter 1, which represents the dancing monitoring signal after phase noise suppression, is selected as the original signal input of adaptive filter 2. Meanwhile, to further enhance the filtering effect, we use reference signal 2 as the reference signal input of adaptive filter 2.
[0076] When these two signals are jointly input into adaptive filter 2, the filter uses an adaptive algorithm to further process the signals, aiming to suppress the intensity noise in the signals. This processing process can further improve the signal-to-noise ratio of the dancing monitoring signal, making it more accurately reflect the actual dancing situation of the OPGW line.
[0077] S105 uses the intensity noise suppression signal as the icing dancing monitoring signal of the low-reflection grating OPGW.
[0078] After the noise reduction processing with multiple reference inputs as described above, a low-noise OPGW dancing monitoring system is obtained. This system can not only accurately capture and analyze dancing signals, but also greatly improve the signal-to-noise ratio of the monitoring signals through noise reduction processing, thereby providing a more reliable technical guarantee for the safety and stability of power transmission.
[0079] This method has been successfully applied to a 220 kV transmission line in the western part of our country. In actual application, the light intensity reflected by the grating array is directly selected as the light intensity noise reference input 2. Meanwhile, the phase demodulation signal obtained by the first sensor of the grating sensing array is selected as the light phase noise reference input 1. These two reference signals are respectively processed by two adaptive noise filters.
[0080] Figure 3 Shows the monitoring results after demodulation by adaptive filter 1. It can be seen from the figure that the monitoring results of the dancing period have a certain improvement compared with the unprocessed signals, and the presentation of the dancing wavelength is also more obvious.
[0081] Figure 4 Shows the monitoring results after demodulation by adaptive filter 2. Compared with Figure 3 In comparison, Figure 4 The monitoring results of the dancing period in are clearer, and the presentation of the dancing wavelength is also more obvious. This comparison fully demonstrates the advantages of the method proposed in the present invention in the dancing monitoring of OPGW transmission lines.
[0082] Through practical applications and comparative analyses, we verified the effectiveness of the multi-reference input noise reduction method proposed in the present invention. This method can not only significantly improve the signal-to-noise ratio of galloping monitoring signals, but also capture and analyze galloping signals more accurately, providing strong technical support for the safety and stability of power transmission.
[0083] This application also provides a low-reflection grating OPGW galloping monitoring system, including:
[0084] A monitoring module, which is arranged in the span of the OPGW transmission line galloping monitoring array with a grating sensing array having a low reflectivity. When the low-reflection grating reflects the optical signal, the optical signal is split into two beams by a coupler;
[0085] An interference module, which is used to input one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and extract a reference signal 2 from the other optical signal;
[0086] A first filtering module, which is used to respectively use the reference signal 1 and the phase signal as the reference input and the original input of an adaptive filter 1 for filtering processing to obtain a phase noise suppression signal;
[0087] A second filtering module, which is used to respectively use the phase noise suppression signal and the reference signal 2 as the original input and the reference input of an adaptive filter 2 for filtering processing to obtain an intensity noise suppression signal;
[0088] A signal module, which is used to use the intensity noise suppression signal as the low-reflection grating OPGW icing galloping monitoring signal.
[0089] This application also provides a low-reflection grating OPGW galloping monitoring device, including:
[0090] A memory, which is used to store the computer-executable program of the above-mentioned low-reflection grating OPGW galloping monitoring method;
[0091] A processor is configured to retrieve the computer-executable program from the memory and execute the following steps: deploy a grating sensing array with low reflectivity within the span of the OPGW transmission line dancing monitoring array. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler. One of the optical signals is input into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and a reference signal 2 is extracted from the other optical signal. The reference signal 1 and the phase signal are respectively used as the reference input and the original input of an adaptive filter 1 for filtering processing to obtain a phase noise suppression signal. The phase noise suppression signal and the reference signal 2 are used as the original input and the reference input of an adaptive filter 2 for filtering processing to obtain an intensity noise suppression signal. The intensity noise suppression signal is used as the OPGW icing and dancing monitoring signal of the low-reflection grating.
[0092] The present application further provides a storage medium storing a computer-executable program, which is configured to be retrieved by a processor to execute the steps of the above-mentioned OPGW dancing monitoring method based on a low-reflection grating.
Claims
1. A method for monitoring the galloping of a low-reflection grating OPGW, characterized in that Including: A grating sensing array with a low reflectivity is arranged within the span of the OPGW transmission line dancing monitoring array. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler; One of the optical signals is input into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and a reference signal 2 is extracted from the other optical signal; The reference signal 1 and the phase signal are respectively used as the reference input and the original input of an adaptive filter 1 for filtering to obtain a phase noise suppression signal; The phase noise suppression signal and the reference signal 2 are used as the original input and the reference input of an adaptive filter 2 for filtering to obtain an intensity noise suppression signal; The intensity noise suppression signal is used as the OPGW icing and dancing monitoring signal of the low-reflection grating.
2. The low-reflection grating OPGW galloping monitoring method according to claim 1, wherein Inputting one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, including: After the light beam enters the unbalanced interferometer, the same optical path pulse signals will interfere, pick up the dancing signal coupled into the OPGW transmission line by the external environment, obtain the phase change amount through array sensing demodulation, and based on the demodulated phase change amount, it is divided into two groups of signals, namely the reference signal 1 and the monitoring signal.
3. The low-reflection grating OPGW galloping monitoring method according to claim 2, characterized in that The expression for obtaining the phase signal is as follows: Where A is the average optical power of the output light, B is the maximum intensity of the interference fringes, z is the index number of the output signal, ΔL and Δn are respectively the fiber length and the refractive index change, and λ is the wavelength of the light.
4. The method for monitoring the galloping of the base reflection grating OPGW according to claim 1, characterized in that, The expression for the phase noise suppression signal is as follows: Among them, x(i) is the original noisy signal, y(i) is the reference signal, z(i) is the error signal, p(i) is the output signal of the digital filter, wj(i) is the j-th value of the filter weight coefficient vector, y(i - 1) is the value of y(i) at the j-th sampling point before the i-th moment, φ n2 (t) is the phase change amount caused by the environmental noise at the detection sensor, φ n1 (t) is the phase change amount caused by the environmental noise at the reference sensor, and p(i) is the output signal of the filter and z(i) is the error signal.
5. A low-reflection grating OPGW galloping monitoring system, characterized in that, Including: A monitoring module, with a grating sensing array having a low reflectivity arranged within the span of the OPGW transmission line dancing monitoring array. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler; An interference module, used to input one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and extract a reference signal 2 from the other optical signal; A first filtering module, used to respectively use the reference signal 1 and the phase signal as the reference input and the original input of an adaptive filter 1 for filtering to obtain a phase noise suppression signal; A second filtering module, used to respectively use the phase noise suppression signal and the reference signal 2 as the original input and the reference input of an adaptive filter 2 for filtering to obtain an intensity noise suppression signal; A signal module, used to use the intensity noise suppression signal as the OPGW icing and dancing monitoring signal of the low-reflection grating.
6. The low-reflection grating OPGW galloping monitoring system according to claim 5, characterized in that, The interference module inputs one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, including: After the light speed enters the unbalanced interferometer, the same optical path pulse signals will interfere, pick up the dancing signal coupled into the OPGW transmission line by the external environment, obtain the phase change amount through array sensing demodulation, and based on the demodulated phase change amount, it is divided into two groups of signals, namely the reference signal 1 and the monitoring signal.
7. The low-reflection grating OPGW galloping monitoring system according to claim 6, characterized in that, The expression for obtaining the phase signal is as follows: Where A is the average optical power of the output light, B is the maximum intensity of the interference fringes, z is the index number of the output signal, ΔL and Δn are respectively the fiber length and the refractive index change, and λ is the wavelength of the light.
8. The base reflection grating OPGW galloping monitoring system according to claim 5, wherein, The expression of the phase noise suppression signal is as follows: Among them, x(i) is the original noisy signal, y(i) is the reference signal, z(i) is the error signal, p(i) is the output signal of the digital filter, wj(i) is the j-th value of the filter weight coefficient vector, y(i - 1) is the value of y(i) at the j-th sampling point before the i-th moment, φ n2 (t) is the phase change amount caused by the environmental noise at the detection sensor, φ n1 (t) is the phase change amount caused by the environmental noise at the reference sensor, and p(i) is the output signal of the filter and z(i) is the error signal.
9. A low-reflection grating OPGW galloping monitoring device, characterized in that, Including: A memory for storing a computer-executable program of the base low-reflection grating OPGW galloping monitoring method according to any one of claims 1 to 4; A processor for retrieving the computer-executable program from the memory and performing: arranging a grating sensing array with a low reflectivity within the span of the OPGW transmission line galloping monitoring array. When the low-reflection grating reflects an optical signal, the optical signal is split into two beams by a coupler; inputting one of the optical signals into an unbalanced interferometer for interference to obtain a reference signal 1 and a phase signal, and extracting a reference signal 2 from the other optical signal; using the reference signal 1 and the phase signal as the reference input and the original input of an adaptive filter 1 respectively for filtering processing to obtain a phase noise suppression signal; using the phase noise suppression signal and the reference signal 2 as the original input and the reference input of an adaptive filter 2 respectively for filtering processing to obtain an intensity noise suppression signal; using the intensity noise suppression signal as the low-reflection grating OPGW icing galloping monitoring signal.
10. A storage medium, characterized in that, Stored with a computer-executable program, which is used to be retrieved by a processor to perform the steps of the base low-reflection grating OPGW galloping monitoring method according to any one of claims 1 to 4.