Method and system for calculating signal quality of launching tower

Abstract

The invention discloses a signal quality calculation method and system for a launching tower, and relates to the technical field of wireless communication, and the method comprises the following steps: calculating a first ratio, judging whether a transmission characteristic function of elastic waves has a local boundary, executing first regulation and control on first power when the local boundary does not exist, and executing second regulation and control on second power when the local boundary does not exist; and calculating a first characteristic value of the elastic wave, constructing an elastic-electric transmission characteristic value expression, calculating a second characteristic value of the electromagnetic wave, and calculating the signal quality of the launching tower. Direct electromagnetic wave detection is replaced by elastic waves, electromagnetic interference and complex environment influence are avoided, objective, stable and repeatable signal quality quantification is realized based on indirect mapping of characteristic values, an adaptive regulation and control mechanism ensures that the elastic waves are in an optimal coupling state of boundary localization, a spherical Bessel function is analyzed and calculated, the characteristic values are efficiently acquired, and the detection accuracy is improved. And the main radiation direction is accurately positioned, the evaluation is focused on a key transmission path, and a technical basis of closed-loop feedback and automatic optimization is provided for signal quality monitoring of the launching tower.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a method and system for calculating the signal quality of a transmission tower. Background Technology

[0002] In recent years, signal quality computing technology has developed rapidly, evolving from static index measurement to dynamic intelligent prediction. Time series models such as LSTM have realized the transformation from reactive to predictive. Through composite quality indicators and uncertainty quantification techniques, the comprehensiveness of the assessment has been improved. By combining visual data, time series data, and geographic data for joint modeling, signal quality computing technology is developing towards edge computing and real-time computing, providing support for scenarios such as 5G communication, intelligent transportation, and drone communication.

[0003] Currently, Chinese invention patent CN120446821B discloses a frequency-hopping method and device for magnetic field quality assessment based on radio electromagnetic positioning. This method constructs and calibrates a radio electromagnetic positioning system to obtain a calibration coefficient matrix. It iterates through each group of excitation signals in the signal combination and inputs the excitation current corresponding to the three different frequencies of excitation signals in each group of excitation signals into the transmitting module. It obtains the induced voltage generated by the receiving module and performs a Fourier transform to obtain a voltage amplitude matrix. Based on the voltage amplitude matrix and the calibration coefficient matrix, it calculates the corresponding magnetic induction intensity matrix. It constructs and solves a target equation based on the vector formed by the magnetic induction intensity matrix and its singular values ​​to obtain three singular values. Based on the three singular values, it calculates the magnetic field quality coefficient corresponding to each group of excitation signals and determines the operating frequency of the radio electromagnetic positioning system for electromagnetic positioning. However, the related technology does not use waves with minimal interference to assist in the calculation of electromagnetic wave quality, which is not conducive to the accuracy of the calculation of transmission tower signal quality. It also does not adjust the power of the auxiliary test wave based on the relevant characteristics of elastic waves, which is not conducive to the adaptability to transmission tower signal quality and has certain limitations. Summary of the Invention

[0004] The technical problem solved by this invention is that related technologies do not have auxiliary calculations for the quality of electromagnetic waves based on waves that are less affected by interference, which is not conducive to the accuracy of calculating the signal quality of transmission towers. Furthermore, they do not have power control for auxiliary test waves based on the relevant characteristics of elastic waves, which is not conducive to the adaptability to the signal quality of transmission towers and has certain limitations.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution. In the first aspect, a method for calculating the signal quality of a transmission tower includes the following steps: Step S100, in a pre-constructed spherical coordinate system, the antenna directivity coefficients of the transmission tower in each direction are obtained by using the calculation expression of the antenna directivity coefficient. In the direction corresponding to the antenna directivity coefficient with the largest value, a first coordinate point is selected, and an elastic wave with a first power is transmitted.

[0006] Step S200: Calculate the first ratio of the electromagnetic wave velocity to the elastic wave velocity in the direction of the radiation intensity with the largest value. Based on the first ratio, determine whether there is a local boundary in the transmission characteristic function of the elastic wave. If there is no local boundary, perform the first regulation on the first power. If there is a local boundary, jump to step S300.

[0007] Step S300: Based on the spherical Bessel function, calculate the first characteristic value of the elastic wave, construct the elastic-electromagnetic transmission characteristic value expression, calculate the second characteristic value of the electromagnetic wave based on the elastic-electromagnetic transmission characteristic value expression and the first characteristic value, and calculate the signal quality of the transmission tower based on the second characteristic value.

[0008] As a preferred embodiment of the signal quality calculation method for a transmission tower described in this invention, the historical transmission power of the transmission tower is obtained, and the electromagnetic field strength of the geometric center point at the top of the transmission tower corresponding to the historical transmission power is obtained in each direction.

[0009] The direction is represented as polar angle and azimuth angle;

[0010] The electromagnetic field strength at the geometric center point at the top of the launch tower in all directions was obtained through historical data analysis.

[0011] Retrieve the calculation expression for the antenna directivity coefficient, input any set of historical transmit power corresponding to the direction and electromagnetic field strength into the calculation expression for the antenna directivity coefficient, and obtain the corresponding antenna directivity coefficient;

[0012] Iterate through each group of antenna directivity coefficients, sort the antenna directivity coefficients in descending order, select the antenna directivity coefficient with the largest value, set the direction corresponding to the antenna directivity coefficient with the largest value as the first direction, and select the first coordinate point in the first direction. The first coordinate point is a spherical coordinate point.

[0013] As a preferred embodiment of the signal quality calculation method for a transmission tower according to the present invention, a selection method is configured for the first coordinate point. The selection method includes: obtaining the surface amplitude of the elastic wave transmitter when transmitting an elastic wave of the first power; setting the propagation medium of the elastic wave as air; obtaining the attenuation coefficient of the elastic wave by air; obtaining the amplitude threshold of the transmission tower antenna; and calculating the minimum distance based on the amplitude threshold, the surface amplitude, and the attenuation coefficient.

[0014] The expression for calculating the minimum distance is: ;

[0015] in, For the minimum distance, The attenuation coefficient is... For surface amplitude, The amplitude threshold;

[0016] Obtain the starting point in the first direction, i.e., the geometric center point of the top of the launch tower. Retrieve the distance formula in the spherical coordinate system, input the minimum distance and the spherical coordinates of the geometric center point of the top of the launch tower into the distance formula in the spherical coordinate system, and obtain the first coordinate point in the first direction.

[0017] The first power is a randomly set power value.

[0018] As a preferred embodiment of the signal quality calculation method for a transmission tower described in this invention, the electromagnetic wave velocity in the direction of the radiation intensity with the largest value is detected at the geometric center of the top of the transmission tower.

[0019] At the geometric center of the top of the elastic wave emitter, the velocity of the elastic wave along the first direction is detected;

[0020] Obtain the attenuation coefficient of the elastic wave velocity in the air. Based on the attenuation coefficient of the elastic wave velocity in the air and the elastic wave velocity along the first direction, calculate the elastic wave velocity at the geometric center of the top of the transmission tower, and denot it as the first velocity.

[0021] Calculate the ratio of the electromagnetic wave velocity in the direction of the maximum radiation intensity to the first velocity, and denote the ratio of the electromagnetic wave velocity in the direction of the maximum radiation intensity to the first velocity as the first ratio.

[0022] As a preferred embodiment of the transmission tower signal quality calculation method of the present invention, it is determined whether the first ratio is distributed within (0,1]. When the first ratio is distributed within (0,1), it is determined that the transmission characteristic function of the elastic wave has a local boundary. When the first ratio is not distributed within (0,1), it is determined that the transmission characteristic function of the elastic wave does not have a local boundary.

[0023] The local boundary is defined as a continuous region in which the absolute value of the first derivative of the elastic wave transmission characteristic function in the spatial domain is greater than the first value, and within this region, the length of the elastic wave is greater than or equal to half of the maximum wavelength of the elastic wave.

[0024] When there is no local boundary, the first power is adjusted. The first adjustment means that the second value is set as the change in the first power. According to the second value, the first power is continuously increased and the increased first ratio is continuously obtained until the increased first ratio has a local boundary. Then the continuous increase of the first power is stopped and the first power at this time is output, which is the first power after the first adjustment. When the increased first ratio does not have a local boundary, the first power is continuously increased.

[0025] As a preferred embodiment of the signal quality calculation method for a transmission tower described in this invention, the number of lobes and the number of zeros of the elastic wave after the first modulation are retrieved, the spherical Bessel function database is retrieved, the number of lobes and the number of zeros are input into the spherical Bessel function database, and the order of the spherical Bessel function corresponding to the number of lobes and the number of zeros is obtained.

[0026] To retrieve the spherical Bessel function, the expression for the spherical Bessel function is: ;

[0027] in, The value of the m-th order Bessel function. Let be any first eigenvalue of the elastic wave. for The values ​​of the order Bessel functions, where each These constitute a discrete sequence of transmission eigenvalues, where each eigenvalue represents the field strength corresponding to the elastic wave.

[0028] Obtain the second distance corresponding to the feature value. The second distance is represented as the straight-line distance between the spherical coordinate point at the feature value and the geometric center point at the top of the launch tower.

[0029] The first eigenvalue of the elastic wave after the first modulation is obtained by using the spherical Bessel function. The first eigenvalue represents the set of eigenvalues ​​corresponding to the elastic wave in the propagation path, and represents the field strength of the elastic wave when it propagates to any eigenvalue at the geometric center point at the top of the transmission tower.

[0030] As a preferred embodiment of the method for calculating the signal quality of a transmission tower according to the present invention, an expression for the characteristic value of electromagnetic transmission is constructed. ;

[0031] in, Let be the expression for the elastic-electric transport eigenvalue corresponding to the kth first eigenvalue. The total number of the first eigenvalues. The value of the nth-order Bessel function. Let be the i-th elastic-electric transport characteristic value, where i is distributed within a double-closed interval from 1 to n, and n is a positive integer. The value of the (n+1)th order Bessel function. This is the first ratio.

[0032] As a preferred embodiment of the method for calculating the signal quality of a transmission tower according to the present invention, the electromagnetic transmission characteristic value corresponding to each first characteristic value is obtained through the electromagnetic transmission characteristic value expression.

[0033] Calculate the first product of the projectile-electric transmission eigenvalue and 2, and calculate the first difference between the first product and the first eigenvalue;

[0034] The first difference is set as the characteristic value of the electromagnetic wave corresponding to the first characteristic value, and is denoted as the second characteristic value. The second characteristic value is represented by the electromagnetic field strength.

[0035] Obtain the spherical coordinates corresponding to the second eigenvalue, which are equal to the spherical coordinates of the first eigenvalue.

[0036] Calculate the straight-line distance between the spherical coordinates corresponding to adjacent second eigenvalues, and denote it as the first distance. Adjacent means that there are no other second eigenvalues ​​between the spherical coordinates corresponding to any two second eigenvalues.

[0037] Calculate the second difference between adjacent second characteristic values, select the absolute value of the second difference, and calculate the ratio of the absolute value of the second difference to the second characteristic value closest to the transmission tower, which is denoted as the second ratio.

[0038] By iterating through each group of adjacent second feature values, the second ratio corresponding to each group of adjacent second feature values ​​is obtained;

[0039] Calculate the average of the second ratio.

[0040] In a preferred embodiment of the transmission tower signal quality calculation method described in this invention, the third value and the fourth value are set as a boundary threshold, wherein the third value is less than the fourth value.

[0041] The average value of the second ratio is compared with the threshold. When the average value of the second ratio is less than or equal to the third value, the signal quality level of the transmission tower is set to the first level. When the second ratio is greater than the third value and less than or equal to the fourth value, the signal quality level of the transmission tower is set to the second level. When the average value of the second ratio is greater than the fourth value, the signal quality level of the transmission tower is set to the third level.

[0042] The first, second, and third levels indicate progressively worse communication quality from the transmission tower.

[0043] Secondly, a signal quality calculation system for a transmission tower includes a transmission module, a calculation module, and an evaluation module;

[0044] The transmitting module obtains the antenna directivity coefficients of the transmitting tower in each direction in a pre-constructed spherical coordinate system through the calculation expression of the antenna directivity coefficient. In the direction corresponding to the antenna directivity coefficient with the largest value, the first coordinate point is selected to transmit an elastic wave with the first power.

[0045] The calculation module calculates the first ratio of the electromagnetic wave velocity to the elastic wave velocity in the direction of the radiation intensity with the largest value, and determines whether the transmission characteristic function of the elastic wave has a local boundary based on the first ratio. When there is no local boundary, the first power is adjusted. When there is a local boundary, the process jumps to step S300.

[0046] The evaluation module calculates the first characteristic value of the elastic wave based on the spherical Bessel function, constructs the elastic-electromagnetic transmission characteristic value expression, calculates the second characteristic value of the electromagnetic wave based on the elastic-electromagnetic transmission characteristic value expression and the first characteristic value, and calculates the signal quality of the transmission tower based on the second characteristic value.

[0047] The beneficial effects of this invention are as follows: by replacing direct electromagnetic wave detection with elastic waves, electromagnetic interference and the influence of complex environments are avoided; based on indirect mapping of eigenvalues, objective, stable and repeatable signal quality quantification is achieved; the adaptive control mechanism ensures that the elastic wave is in the optimal coupling state of boundary localization; the spherical Bessel function is used for analytical calculation to efficiently obtain eigenvalues; the main radiation direction is accurately located; and the evaluation focuses on the key transmission path, providing a technical basis for closed-loop feedback and automatic optimization for transmission tower signal quality monitoring. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the basic process of a method for calculating the signal quality of a transmission tower, provided as an embodiment of the present invention. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] It should be understood that the step numbers used herein are for ease of description only and are not intended to limit the order in which the steps are performed. It should also be understood that the terminology used in this specification is for the purpose of describing specific embodiments only and is not intended to limit the invention.

[0051] As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0052] The terms “comprising” and “including” indicate the presence of the described feature, whole, step, operation, element and / or component, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0053] The term “and / or” refers to any combination of one or more of the associated listed items, as well as all possible combinations, and includes these combinations.

[0054] This application provides a method for calculating the signal quality of a transmission tower, which relates to the field of application. This method can be applied to a terminal, a server, or software running on either a terminal or a server. In some embodiments, the terminal can be a smartphone, tablet, laptop, desktop computer, etc.; the server can be configured as an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application implementing the transmission tower signal quality calculation method, but is not limited to the above forms.

[0055] This application can also be used in numerous general-purpose or special-purpose computer system environments or configurations. Examples include: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics devices, network PCs, minicomputers, mainframe computers, and distributed computing environments including any of the above systems or devices. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0056] Example, refer to Figure 1 As an embodiment of the present invention, a method for calculating the signal quality of a transmission tower is provided, including the following steps: Step S100, in a pre-constructed spherical coordinate system, the antenna directivity coefficients of the transmission tower in each direction are obtained through the calculation expression of the antenna directivity coefficients; in the direction corresponding to the antenna directivity coefficient with the largest value, a first coordinate point is selected, and an elastic wave with a first power is transmitted.

[0057] Step S200: Calculate the first ratio of the electromagnetic wave velocity to the elastic wave velocity in the direction of the radiation intensity with the largest value. Based on the first ratio, determine whether there is a local boundary in the transmission characteristic function of the elastic wave. If there is no local boundary, perform the first regulation on the first power. If there is a local boundary, jump to step S300.

[0058] Step S300: Based on the spherical Bessel function, calculate the first characteristic value of the elastic wave, construct the elastic-electromagnetic transmission characteristic value expression, calculate the second characteristic value of the electromagnetic wave based on the elastic-electromagnetic transmission characteristic value expression and the first characteristic value, and calculate the signal quality of the transmission tower based on the second characteristic value.

[0059] More preferably, this invention uses elastic waves to replace direct electromagnetic wave detection, avoiding electromagnetic interference and the influence of complex environments. Based on indirect mapping of eigenvalues, it achieves objective, stable, and repeatable signal quality quantification. The adaptive control mechanism ensures that the elastic wave is in the optimal coupling state of boundary localization. The spherical Bessel function is used for analytical calculation to efficiently obtain eigenvalues. The main radiation direction is accurately located, and the evaluation focuses on the key transmission path, providing a technical basis for closed-loop feedback and automatic optimization for transmission tower signal quality monitoring.

[0060] More preferably, for the spherical coordinate system, a construction method is configured, which includes taking the geometric center point of the top of the launch tower as the origin, drawing three mutually perpendicular number axes through the origin to obtain the x-axis, y-axis and z-axis, wherein the x-axis, y-axis and z-axis satisfy the right-hand rule, and at this time a three-dimensional rectangular coordinate system is obtained;

[0061] In a three-dimensional rectangular coordinate system, set any point P, whose three-dimensional coordinates are (x, y, z). The straight-line distance from the origin to point P is denoted as the radial distance. The angle between the line connecting the positive z-axis and point P and the positive z-axis is denoted as the polar angle. The angle at which the xy plane is rotated counterclockwise from the positive x-axis to the projection point of point P on the xy plane is set as the azimuth angle. Based on the radial distance, polar angle, and azimuth angle, construct a spherical coordinate system.

[0062] Obtain the historical transmission power of the transmission tower, and obtain the electromagnetic field strength in each direction from the geometric center point at the top of the transmission tower corresponding to the historical transmission power;

[0063] The direction is represented as polar angle and azimuth angle;

[0064] The electromagnetic field strength at the geometric center point at the top of the launch tower in all directions was obtained through historical data analysis.

[0065] Retrieve the calculation expression for the antenna directivity coefficient, input any set of historical transmit power corresponding to the direction and electromagnetic field strength into the calculation expression for the antenna directivity coefficient, and obtain the corresponding antenna directivity coefficient;

[0066] Iterate through each group of antenna directivity coefficients, sort the antenna directivity coefficients in descending order, select the antenna directivity coefficient with the largest value, set the direction corresponding to the antenna directivity coefficient with the largest value as the first direction, and select the first coordinate point in the first direction. The first coordinate point is a spherical coordinate point.

[0067] More preferably, the larger the value of the antenna directivity coefficient, the higher the concentration of radiated energy of the antenna in the corresponding direction;

[0068] The expression for calculating the antenna directivity coefficient is as follows: ;

[0069] in, For antenna directivity coefficient, The rated electromagnetic field strength of the launch tower, The polar angle of the geometric center point at the top of the launch tower is . And the azimuth angle is The intensity of the electromagnetic field emitted in the direction of .

[0070] More preferably, by selecting the direction of the antenna directivity coefficient with the largest value, the main radiation direction of the antenna can be determined. This direction represents the spatial direction in which the signal energy of the transmission tower is most concentrated. It is used for subsequent coupling transmission of elastic waves and electromagnetic waves, so as to use the characteristics of elastic waves to indicate the characteristics of electromagnetic waves, thereby avoiding the limitations of electromagnetic wave detection being easily affected by terrain and environment. This improves the spatial pointing accuracy and environmental robustness of signal quality assessment. Based on this, the accuracy and objectivity of subsequent signal quality calculation are improved. Compared with the existing technology, there are significant beneficial effects in terms of the accuracy of signal quality calculation.

[0071] For the first coordinate point, a selection method is configured, which includes: obtaining the surface amplitude of the elastic wave transmitter when transmitting an elastic wave of the first power; setting the propagation medium of the elastic wave as air; obtaining the attenuation coefficient of the elastic wave by air; obtaining the amplitude threshold of the transmitting tower antenna; and calculating the minimum distance based on the amplitude threshold, the surface amplitude, and the attenuation coefficient.

[0072] The expression for calculating the minimum distance is: ;

[0073] in, For the minimum distance, The attenuation coefficient is... For surface amplitude, The amplitude threshold;

[0074] Obtain the starting point in the first direction, i.e., the geometric center point of the top of the launch tower. Retrieve the distance formula in the spherical coordinate system, input the minimum distance and the spherical coordinates of the geometric center point of the top of the launch tower into the distance formula in the spherical coordinate system, and obtain the first coordinate point in the first direction.

[0075] The first power is a randomly set power value.

[0076] More preferably, by calculating the first coordinate point, the coupling response signal between the elastic wave and the electromagnetic wave can be collected at the first coordinate point while avoiding interference of the elastic wave to the electromagnetic wave, ensuring the integrity of the original propagation characteristics of the electromagnetic wave. Thus, under the premise of ensuring the independent propagation path of the electromagnetic wave, lossless mapping of the spatial characteristics of the electromagnetic wave by the elastic wave can be achieved. The propagation characteristics of the elastic wave are strongly correlated with the spatial radiation mode of the electromagnetic wave. Its amplitude attenuation curve, phase offset and multipath reflection characteristics can map the propagation distortion of the electromagnetic wave under non-ideal channels. The elastic wave is excited by a piezoelectric transducer array with a working frequency of 20kHz to 100kHz and a bandwidth of not less than 15kHz, ensuring the distinguishable mapping accuracy of key parameters such as the main lobe width, side lobe suppression ratio and polarization purity of the electromagnetic wave.

[0077] More preferably, the elastic wave is selected as ultrasonic wave. The longitudinal wave of elastic wave has the ability to penetrate objects. Compared with the inability of electromagnetic waves to avoid obstacles, it has a more convenient detection method, significantly reduces the dependence on complex terrain and multipath reflection environment, and reduces the risk of signal distortion caused by electromagnetic shielding, metal blockage or rain and fog attenuation in on-site deployment. Thus, it can still maintain a high accuracy of signal feature reproduction in dense urban areas, mountain tunnels and high-speed moving scenarios. Through subsequent characteristic correlation analysis of electromagnetic field and ultrasonic field, the electromagnetic wave signal features are obtained through the well-detected ultrasonic signal features, which improves the accuracy and convenience of electromagnetic wave signal feature acquisition, and also improves the accuracy of electromagnetic wave signal quality calculation.

[0078] At the geometric center of the top of the launch tower, the electromagnetic wave velocity in the direction of the maximum radiation intensity is detected;

[0079] At the geometric center of the top of the elastic wave emitter, the velocity of the elastic wave along the first direction is detected;

[0080] Obtain the attenuation coefficient of the elastic wave velocity in the air. Based on the attenuation coefficient of the elastic wave velocity in the air and the elastic wave velocity along the first direction, calculate the elastic wave velocity at the geometric center of the top of the transmission tower, and denot it as the first velocity.

[0081] Calculate the ratio of the electromagnetic wave velocity in the direction of the maximum radiation intensity to the first velocity, and denote the ratio of the electromagnetic wave velocity in the direction of the maximum radiation intensity to the first velocity as the first ratio.

[0082] More preferably, by calculating the ratio of electromagnetic wave velocity to elastic wave velocity, it is easier to determine whether there is a local boundary in the elastic wave. This allows for selection of whether to adjust the elastic wave transmission power based on the determination of the local boundary. This method can effectively avoid electromagnetic wave spatial characteristic mismapping caused by elastic wave propagation path distortion, reduce signal quality assessment errors, and, based on the method of performing a first adjustment on the first power when there is no local boundary, make the elastic wave data used to indirectly obtain electromagnetic signal quality data more accurate and more adaptable to the current electromagnetic wave signal. This makes the method more flexible and adaptable. For example, at monitoring positions greater than the minimum distance, the elastic wave velocity at the transmission tower location can be obtained through the fixed law of elastic wave attenuation characteristics. Based on the ratio between electromagnetic wave velocity and elastic wave velocity, it can be determined whether the elastic wave transmission velocity needs to be adjusted. This allows for flexible changes in the elastic wave transmission position and the acquisition of a more accurate wave velocity value.

[0083] Determine whether the first ratio is distributed within (0,1]. If the first ratio is distributed within (0,1], it is determined that the transmission characteristic function of the elastic wave has a local boundary. If the first ratio is not distributed within (0,1], it is determined that the transmission characteristic function of the elastic wave does not have a local boundary.

[0084] The local boundary is defined as a continuous region in which the absolute value of the first derivative of the elastic wave transmission characteristic function in the spatial domain is greater than the first value, and within this region, the length of the elastic wave is greater than or equal to half of the maximum wavelength of the elastic wave.

[0085] When there is no local boundary, the first power is adjusted. The first adjustment means that the second value is set as the change in the first power. According to the second value, the first power is continuously increased and the increased first ratio is continuously obtained until the increased first ratio has a local boundary. Then the continuous increase of the first power is stopped and the first power at this time is output, which is the first power after the first adjustment. When the increased first ratio does not have a local boundary, the first power is continuously increased.

[0086] More preferably, the first value is 0.85, which was obtained by statistically analyzing 127 sets of measured elastic wave propagation data in three scenarios: typical dense urban areas, open suburban areas, and hilly transition zones, with a confidence level of 0.95.

[0087] Retrieve the number of lobes and zeros of the elastic wave after the first modulation, retrieve the spherical Bessel function database, input the number of lobes and zeros into the spherical Bessel function database, and obtain the order of the spherical Bessel function corresponding to the number of lobes and zeros.

[0088] To retrieve the spherical Bessel function, the expression for the spherical Bessel function is: ;

[0089] in, The value of the m-th order Bessel function. Let be any first eigenvalue of the elastic wave. for The values ​​of the order Bessel functions, where each These constitute a discrete sequence of transmission eigenvalues, where each eigenvalue represents the field strength corresponding to the elastic wave.

[0090] Obtain the second distance corresponding to the feature value. The second distance is represented as the straight-line distance between the spherical coordinate point at the feature value and the geometric center point at the top of the launch tower.

[0091] The first eigenvalue of the elastic wave after the first modulation is obtained by using the spherical Bessel function. The first eigenvalue represents the set of eigenvalues ​​corresponding to the elastic wave in the propagation path, and represents the field strength of the elastic wave when it propagates to any eigenvalue at the geometric center point at the top of the transmission tower.

[0092] More preferably, by calculating the first characteristic value of the elastic wave, data support can be provided for the subsequent construction of the characteristic expression of elastic-electric transmission, so as to quantify the characteristic value of the electromagnetic wave.

[0093] Construct the eigenvalue expression for the electric transport of the elastic element. ;

[0094] in, Let be the expression for the elastic-electric transport eigenvalue corresponding to the kth first eigenvalue. The total number of the first eigenvalues. The value of the nth-order Bessel function. Let be the i-th elastic-electric transport characteristic value, where i is distributed within a double-closed interval from 1 to n, and n is a positive integer. The value of the (n+1)th order Bessel function. The first ratio;

[0095] By using the eigenvalue expression for the electric transport characteristic value, the electric transport characteristic value corresponding to each first characteristic value is obtained;

[0096] Calculate the first product of the projectile-electric transmission eigenvalue and 2, and calculate the first difference between the first product and the first eigenvalue;

[0097] The first difference is set as the characteristic value of the electromagnetic wave corresponding to the first characteristic value, and is denoted as the second characteristic value. The second characteristic value is represented by the electromagnetic field strength.

[0098] Obtain the spherical coordinates corresponding to the second eigenvalue, which are equal to the spherical coordinates of the first eigenvalue.

[0099] Calculate the straight-line distance between the spherical coordinates corresponding to adjacent second eigenvalues, and denote it as the first distance. Adjacent means that there are no other second eigenvalues ​​between the spherical coordinates corresponding to any two second eigenvalues.

[0100] Calculate the second difference between adjacent second characteristic values, select the absolute value of the second difference, and calculate the ratio of the absolute value of the second difference to the second characteristic value closest to the transmission tower, which is denoted as the second ratio.

[0101] By iterating through each group of adjacent second feature values, the second ratio corresponding to each group of adjacent second feature values ​​is obtained;

[0102] Calculate the average of the second ratio;

[0103] Set the third and fourth values ​​as the dividing thresholds, where the third value is less than the fourth value;

[0104] The average value of the second ratio is compared with the threshold. When the average value of the second ratio is less than or equal to the third value, the signal quality level of the transmission tower is set to the first level. When the second ratio is greater than the third value and less than or equal to the fourth value, the signal quality level of the transmission tower is set to the second level. When the average value of the second ratio is greater than the fourth value, the signal quality level of the transmission tower is set to the third level.

[0105] The first, second, and third levels indicate progressively worse communication quality from the transmission tower.

[0106] More preferably, this invention uses elastic waves to replace direct electromagnetic wave detection, avoiding electromagnetic interference and the influence of complex environments. Based on indirect mapping of eigenvalues, it achieves objective, stable, and repeatable signal quality quantification. The adaptive control mechanism ensures that the elastic wave is in the optimal coupling state of boundary localization. The spherical Bessel function is used for analytical calculation to efficiently obtain eigenvalues. The main radiation direction is accurately located, and the evaluation focuses on the key transmission path, providing a technical basis for closed-loop feedback and automatic optimization for transmission tower signal quality monitoring.

[0107] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code. The storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0108] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A method for calculating the signal quality of a transmission tower, characterized in that, The steps include: Step S100, in a pre-constructed spherical coordinate system, the antenna directivity coefficients of the transmitting tower in each direction are obtained through the calculation expression of the antenna directivity coefficients. In the direction corresponding to the antenna directivity coefficient with the largest value, the first coordinate point is selected, and an elastic wave with the first power is transmitted. Step S200: Calculate the first ratio of the electromagnetic wave velocity to the elastic wave velocity in the direction of the radiation intensity with the largest value. Based on the first ratio, determine whether there is a local boundary in the transmission characteristic function of the elastic wave. If there is no local boundary, perform the first regulation on the first power. If there is a local boundary, jump to step S300. Step S300: Based on the spherical Bessel function, calculate the first characteristic value of the elastic wave, construct the elastic-electromagnetic transmission characteristic value expression, calculate the second characteristic value of the electromagnetic wave based on the elastic-electromagnetic transmission characteristic value expression and the first characteristic value, and calculate the signal quality of the transmission tower based on the second characteristic value.

2. The method for calculating the signal quality of a transmission tower as described in claim 1, characterized in that, Obtain the historical transmission power of the transmission tower, and obtain the electromagnetic field strength in each direction from the geometric center point at the top of the transmission tower corresponding to the historical transmission power; The direction is represented as polar angle and azimuth angle; The electromagnetic field strength at the geometric center point at the top of the launch tower in all directions was obtained through historical data analysis. Retrieve the calculation expression for the antenna directivity coefficient, input any set of historical transmit power corresponding to the direction and electromagnetic field strength into the calculation expression for the antenna directivity coefficient, and obtain the corresponding antenna directivity coefficient; Iterate through each group of antenna directivity coefficients, sort the antenna directivity coefficients in descending order, select the antenna directivity coefficient with the largest value, set the direction corresponding to the antenna directivity coefficient with the largest value as the first direction, and select the first coordinate point in the first direction. The first coordinate point is a spherical coordinate point.

3. The method for calculating the signal quality of a transmission tower as described in claim 2, characterized in that, For the first coordinate point, a selection method is configured, which includes: obtaining the surface amplitude of the elastic wave transmitter when transmitting an elastic wave of the first power; setting the propagation medium of the elastic wave as air; obtaining the attenuation coefficient of the elastic wave by air; obtaining the amplitude threshold of the transmitting tower antenna; and calculating the minimum distance based on the amplitude threshold, the surface amplitude, and the attenuation coefficient. The expression for calculating the minimum distance is: ; in, For the minimum distance, The attenuation coefficient is... For surface amplitude, The amplitude threshold; Obtain the starting point in the first direction, i.e., the geometric center point of the top of the launch tower. Retrieve the distance formula in the spherical coordinate system, input the minimum distance and the spherical coordinates of the geometric center point of the top of the launch tower into the distance formula in the spherical coordinate system, and obtain the first coordinate point in the first direction. The first power is a randomly set power value.

4. The method for calculating the signal quality of a transmission tower as described in claim 1, characterized in that, At the geometric center of the top of the launch tower, the electromagnetic wave velocity in the direction of the maximum radiation intensity is detected; At the geometric center of the top of the elastic wave emitter, the velocity of the elastic wave along the first direction is detected; Obtain the attenuation coefficient of the elastic wave velocity in the air. Based on the attenuation coefficient of the elastic wave velocity in the air and the elastic wave velocity along the first direction, calculate the elastic wave velocity at the geometric center of the top of the transmission tower, and denot it as the first velocity. Calculate the ratio of the electromagnetic wave velocity in the direction of the maximum radiation intensity to the first velocity, and denote the ratio of the electromagnetic wave velocity in the direction of the maximum radiation intensity to the first velocity as the first ratio.

5. The method for calculating the signal quality of a transmission tower as described in claim 4, characterized in that, Determine whether the first ratio is distributed within (0,1]. If the first ratio is distributed within (0,1], it is determined that the transmission characteristic function of the elastic wave has a local boundary. If the first ratio is not distributed within (0,1], it is determined that the transmission characteristic function of the elastic wave does not have a local boundary. The local boundary is defined as a continuous region in which the absolute value of the first derivative of the elastic wave transmission characteristic function in the spatial domain is greater than the first value, and within this region, the length of the elastic wave is greater than or equal to half of the maximum wavelength of the elastic wave. When there is no local boundary, the first power is adjusted. The first adjustment means that the second value is set as the change in the first power. According to the second value, the first power is continuously increased and the increased first ratio is continuously obtained until the increased first ratio has a local boundary. Then the continuous increase of the first power is stopped and the first power at this time is output, which is the first power after the first adjustment. When the increased first ratio does not have a local boundary, the first power is continuously increased.

6. The method for calculating the signal quality of a transmission tower as described in claim 5, characterized in that, Retrieve the number of lobes and zeros of the elastic wave after the first modulation, retrieve the spherical Bessel function database, input the number of lobes and zeros into the spherical Bessel function database, and obtain the order of the spherical Bessel function corresponding to the number of lobes and zeros. To retrieve the spherical Bessel function, the expression for the spherical Bessel function is: ; in, The value of the m-th order Bessel function. Let be any first eigenvalue of the elastic wave. for The values ​​of the order Bessel functions, where each These constitute a discrete sequence of transmission eigenvalues, where each eigenvalue represents the field strength corresponding to the elastic wave. Obtain the second distance corresponding to the feature value. The second distance is represented as the straight-line distance between the spherical coordinate point at the feature value and the geometric center point at the top of the launch tower. The first eigenvalue of the elastic wave after the first modulation is obtained by using the spherical Bessel function. The first eigenvalue represents the set of eigenvalues ​​corresponding to the elastic wave in the propagation path, and represents the field strength of the elastic wave when it propagates to any eigenvalue at the geometric center point at the top of the transmission tower.

7. The method for calculating the signal quality of a transmission tower as described in claim 1, characterized in that, Construct the eigenvalue expression for the electric transport of the elastic element. ; in, Let be the expression for the elastic-electric transport eigenvalue corresponding to the kth first eigenvalue. The total number of the first eigenvalues. The value of the nth-order Bessel function. Let be the i-th elastic-electric transport characteristic value, where i is distributed within a double-closed interval from 1 to n, and n is a positive integer. The value of the (n+1)th order Bessel function. This is the first ratio.

8. The method for calculating the signal quality of a transmission tower as described in claim 7, characterized in that, By using the eigenvalue expression for the electric transport characteristic value, the electric transport characteristic value corresponding to each first characteristic value is obtained; Calculate the first product of the projectile-electric transmission eigenvalue and 2, and calculate the first difference between the first product and the first eigenvalue; The first difference is set as the characteristic value of the electromagnetic wave corresponding to the first characteristic value, and is denoted as the second characteristic value. The second characteristic value is represented by the electromagnetic field strength. Obtain the spherical coordinates corresponding to the second eigenvalue, which are equal to the spherical coordinates of the first eigenvalue. Calculate the straight-line distance between the spherical coordinates corresponding to adjacent second eigenvalues, and denote it as the first distance. Adjacent means that there are no other second eigenvalues ​​between the spherical coordinates corresponding to any two second eigenvalues. Calculate the second difference between adjacent second characteristic values, select the absolute value of the second difference, and calculate the ratio of the absolute value of the second difference to the second characteristic value closest to the transmission tower, which is denoted as the second ratio. By iterating through each group of adjacent second feature values, the second ratio corresponding to each group of adjacent second feature values ​​is obtained; Calculate the average of the second ratio.

9. The method for calculating the signal quality of a transmission tower as described in claim 8, characterized in that, Set the third and fourth values ​​as the dividing thresholds, where the third value is less than the fourth value; The average value of the second ratio is compared with the threshold. When the average value of the second ratio is less than or equal to the third value, the signal quality level of the transmission tower is set to the first level. When the second ratio is greater than the third value and less than or equal to the fourth value, the signal quality level of the transmission tower is set to the second level. When the average value of the second ratio is greater than the fourth value, the signal quality level of the transmission tower is set to the third level. The first, second, and third levels indicate progressively worse communication quality from the transmission tower.

10. A tower signal quality calculation system, the system being used to execute the tower signal quality calculation method according to claim 1, characterized in that, It includes a launch module, a computing module, and an evaluation module; The transmitting module obtains the antenna directivity coefficients of the transmitting tower in each direction in a pre-constructed spherical coordinate system through the calculation expression of the antenna directivity coefficient. In the direction corresponding to the antenna directivity coefficient with the largest value, the first coordinate point is selected to transmit an elastic wave with the first power. The calculation module calculates the first ratio of the electromagnetic wave velocity to the elastic wave velocity in the direction of the radiation intensity with the largest value, and determines whether the transmission characteristic function of the elastic wave has a local boundary based on the first ratio. When there is no local boundary, the first power is adjusted. When there is a local boundary, the process jumps to step S300. The evaluation module calculates the first characteristic value of the elastic wave based on the spherical Bessel function, constructs the elastic-electromagnetic transmission characteristic value expression, calculates the second characteristic value of the electromagnetic wave based on the elastic-electromagnetic transmission characteristic value expression and the first characteristic value, and calculates the signal quality of the transmission tower based on the second characteristic value.

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