Method and device for testing transmitting capacity of antenna capable of eliminating fluctuation

Abstract

The invention relates to an antenna emission capability test method and device capable of eliminating fluctuation. Acquiring first radiation power of a standard antenna in the darkroom at a plurality of polarization angles; obtaining a first radiation power curve according to the first radiation power of each polarization angle; determining a target polarization angle and target radiation power corresponding to the target polarization angle according to the first radiation power curve; calculating a correction factor according to the theoretical radiation power and the target radiation power of the standard antenna; after the standard antenna in the darkroom is replaced by the tested antenna, obtaining second radiation power of the tested antenna at multiple polarization angles; correcting the second radiation power of each polarization angle according to the correction factor, smoothing the corrected second radiation power, and calculating the total radiation power of the tested antenna; and according to the total radiation power, determining whether the emission capability of the tested antenna reaches the standard. According to the method, fluctuation is eliminated, and the accuracy of antenna emission capability testing is improved.

Description

Technical Field

[0001] The embodiments in this specification relate to the field of wireless communication technology, and in particular to a method and apparatus for testing antenna transmission capability to eliminate fluctuations. Background Technology

[0002] Existing antenna transmission capability testing methods are prone to power sampling fluctuations, leading to inaccurate antenna transmission capability tests. These power sampling fluctuations are mainly caused by the following factors: 1. The spectrum analyzer exhibits momentary fluctuations when reading power values; 2. Minor oscillations of the antenna under test cause differences in radiation patterns; 3. Multipath reflections or non-ideal interference exist in the darkroom environment.

[0003] Therefore, how to eliminate fluctuations during power sampling to improve the accuracy of antenna transmission capability testing is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] To address the problems existing in the prior art, this specification provides an antenna transmission capability testing method and apparatus that eliminates fluctuations, thereby improving the accuracy of antenna transmission capability testing.

[0005] The specific technical solutions of the embodiments in this specification are as follows: On the one hand, embodiments of this specification provide a method for testing antenna transmission capability to eliminate fluctuations, the method comprising: Obtain the first radiated power of a standard antenna in an anechoic chamber at multiple polarization angles; The first radiation power curve is obtained based on the first radiation power at each polarization angle; The target polarization angle and the target radiation power corresponding to the target polarization angle are determined based on the first radiation power curve. The correction factor is calculated based on the theoretical radiated power of the standard antenna and the target radiated power; After replacing the standard antenna in the anechoic chamber with the antenna under test, the second radiated power of the antenna under test at the multiple polarization angles is obtained; The second radiated power at each polarization angle is corrected according to the correction factor, and the corrected second radiated power is smoothed to calculate the total radiated power of the antenna under test. The total radiated power is used to determine whether the transmission capability of the antenna under test meets the standard.

[0006] Furthermore, the first radiation power curve obtained based on the first radiation power at each polarization angle further includes: According to the formula P(θ = aθ) 2The first radiation power curve is obtained by fitting the first radiation power at each polarization angle with + bθ + c, where θ represents the polarization angle, P(θ) represents the radiation power corresponding to the polarization angle θ in the first radiation power curve, and a, b and c are parameters.

[0007] Furthermore, determining the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve further includes: Calculate the extreme points of the first radiated power curve; The polarization angle and radiation power corresponding to the extreme point are determined and used as the target polarization angle and the target radiation power, respectively.

[0008] Furthermore, before obtaining the first radiation power curve based on the first radiation power at each polarization angle, the method further includes: The first radiated power at the plurality of polarization angles is filtered so that the first radiated power curve can be obtained based on the filtered first radiated power at each polarization angle.

[0009] Furthermore, the formula for calculating the correction factor based on the theoretical radiated power of the standard antenna and the target radiated power is as follows: C field = P theory – P peak ; Among them, C field P represents the correction factor. peak P represents the target radiated power. theory Indicates theoretical radiated power; P theory = P tx + G tx +G rx -20log 10 (d) -20log 10 (f) – 32.45; Among them, P tx G represents the transmit power of a standard antenna. tx G represents the transmit gain of a standard antenna. rx d represents the receiving antenna gain, d represents the distance from the standard antenna to the reflecting surface in the anechoic chamber, and f represents the transmission signal frequency of the standard antenna.

[0010] Furthermore, correcting the second radiative power at each polarization angle according to the correction factor further includes: The second radiated power is calculated by summing the second radiated power with the correction factor to obtain the corrected second radiated power.

[0011] Furthermore, the formula for smoothing the corrected second radiated power is as follows: Ps m i = ω N i ·Pf m i ; Among them, Ps m i Pf represents the smoothed second radiated power corresponding to the i-th polarization angle. m i This represents the corrected second radiative power corresponding to the i-th polarization angle;

[0012] Where, ω i θ represents the weight of the i-th polarization angle. i Let θ represent the value of the i-th polarization angle, θ0 represent the polarization angle of the target center, σ = δθ, δθ represent the sampling interval of the polarization angle, and n represent the total number of polarization angles.

[0013] Furthermore, the formula for calculating the total radiated power of the antenna under test is as follows: TRP dBm = 10log 10 (TRP mW );

[0014] Among them, TRP dBm G represents the total radiated power. rx λ represents the receiving antenna gain, and λ represents the wavelength of the signal transmitted by the antenna under test. , The angle step indicates the polarization direction. θ represents the angle step in the azimuth direction. i,j This represents the value of the i-th polarization angle of the antenna under test at the j-th azimuth angle.

[0015] Furthermore, determining whether the transmission capability of the antenna under test meets the standard based on the total radiated power further includes: The transmittance capability of the antenna under test is determined based on the total radiated power and the predetermined power index value.

[0016] On the other hand, embodiments of this specification also provide an antenna transmission capability testing apparatus for eliminating fluctuations, comprising: The radiated power acquisition unit is used to acquire the first radiated power of a standard antenna in an anechoic chamber at multiple polarization angles. The fitting unit is used to obtain the first radiation power curve based on the first radiation power at each polarization angle. The target radiation power determination unit is used to determine the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve. The correction factor calculation unit is used to calculate the correction factor based on the theoretical radiated power of the standard antenna and the target radiated power. The radiation power acquisition unit is further configured to acquire the second radiation power of the antenna under test at the plurality of polarization angles after replacing the standard antenna in the anechoic chamber with the antenna under test. The total radiated power calculation unit is used to correct the second radiated power at each polarization angle according to the correction factor, smooth the corrected second radiated power, and calculate the total radiated power of the antenna under test. The transmission capability judgment unit is used to determine whether the transmission capability of the antenna under test meets the standard based on the total radiated power.

[0017] The embodiments in this specification address the technical shortcomings of existing technologies, such as large fluctuations in single-point measurements, sensitivity to angle errors, and measurement instability, which result in insufficient power accuracy. By introducing multi-point sampling at multiple polarization angles near the target center polarization angle and radiated power correction techniques, robust estimation of the antenna main lobe directional power can be achieved in noisy environments, further improving the repeatability and consistency of antenna transmission capability testing. Simultaneously, during calibration, the measured radiation pattern curve can be effectively fitted and outlier error points eliminated, thereby accurately extracting the correction factor and improving the stability and reliability of calibration compensation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 The figure shown is a schematic diagram of an implementation system for an antenna transmission capability testing method for eliminating fluctuations, as described in an embodiment of this specification. Figure 2 The diagram shown is a flowchart illustrating an antenna transmission capability testing method for eliminating fluctuations, as described in an embodiment of this specification. Figure 3The diagram shown is a flowchart illustrating how the target polarization angle and the target radiation power corresponding to the target polarization angle are determined based on the first radiation power curve in an embodiment of this specification. Figure 4 The diagram shown is a structural schematic of an antenna transmission capability testing device for eliminating fluctuations, as described in an embodiment of this specification. Figure 5 The diagram shown is a structural schematic of the computer device in an embodiment of this specification.

[0020] [Explanation of Figure Markers]: 101. Dark room; 102. Antenna under test; 103. Feed source; 104. Spectrum analyzer / signal generator; 105. Test the computer; 401. Radiated power acquisition unit; 402. Fitting unit; 403. Target radiation power determination unit; 404. Correction factor calculation unit; 405. Total Radiated Power Calculation Unit; 406. Launch capability assessment unit; 501, Instruction Filling Unit; 502. Command Transmission Unit; 503. Processing Unit; 502. Computer equipment; 504. Processing equipment; 506. Storage resources; 508. Drive mechanism; 510. Input / output module; 512. Input devices; 514. Output devices; 516. Presentation equipment; 518. Graphical User Interface; 520. Network interface; 522. Communication link; 524. Communication bus. Detailed Implementation

[0021] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this specification, and not all embodiments. Based on the embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the embodiments of this specification.

[0022] It should be noted that the terms "first," "second," etc., in the description, claims, and accompanying drawings of the embodiments herein are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, apparatus, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0023] It should be noted that the acquisition, storage, use, and processing of data in the technical solutions of the embodiments of this specification all comply with the relevant provisions of national laws and regulations.

[0024] It should be noted that in the embodiments of this specification, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, they do not mean that the applicant has used or necessarily used the solution.

[0025] like Figure 1 The diagram illustrates a system implementation of an antenna transmission capability testing method for eliminating fluctuations, as described in this specification. The testing environment includes an anechoic chamber 101, an antenna under test 102, a feed 103, a spectrum analyzer / signal source 104, and a test computer 105. During testing, the test computer 105 sends a command to the antenna under test 102, driving it to transmit a specially designed radio frequency (RF) signal. This RF signal propagates within the anechoic chamber 101 and is reflected and focused by a reflective surface within the chamber. The focused signal is captured by the antenna of the feed 103 located at the focal point. The antenna of the feed 103 converts the received RF energy into an electrical signal and transmits it to the spectrum analyzer / signal source 104 via an RF cable. The spectrum analyzer / signal source 104 measures the input electrical signal to obtain its frequency domain characteristic data (such as power). Subsequently, the measurement data is uploaded to the test computer 105 via a control bus. The test computer 105 contains a processing module for executing a preset algorithm on the received measurement data to evaluate the performance parameters of the antenna under test.

[0026] To address the problems existing in the prior art, this specification provides an antenna transmission capability testing method that eliminates fluctuations, thereby improving the accuracy of antenna transmission capability testing. Figure 2The diagram shows a flowchart illustrating a method for testing antenna transmission capability to eliminate fluctuations, as per an embodiment of this specification. The process of testing antenna transmission capability is depicted in this diagram. The order of steps listed in the embodiment is merely one possible execution order among many and does not represent the only possible order. In actual system or device products, the method can be executed sequentially or in parallel, as shown in the embodiment or the accompanying drawings. Specifically, as... Figure 2 As shown, the method is executed by test computer 105, and the method may include: Step 201: Obtain the first radiated power of the standard antenna in the anechoic chamber at multiple polarization angles; Step 202: Obtain the first radiation power curve based on the first radiation power at each polarization angle; Step 203: Determine the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve; Step 204: Calculate the correction factor based on the theoretical radiated power of the standard antenna and the target radiated power; Step 205: After replacing the standard antenna in the anechoic chamber with the antenna under test, obtain the second radiated power of the antenna under test at the plurality of polarization angles; Step 206: Correct the second radiated power at each polarization angle according to the correction factor, smooth the corrected second radiated power, and calculate the total radiated power of the antenna under test. Step 207: Determine whether the transmission capability of the antenna under test meets the standard based on the total radiated power.

[0027] The embodiments in this specification address the technical shortcomings of existing technologies, such as large fluctuations in single-point measurements, sensitivity to angle errors, and measurement instability, which result in insufficient power accuracy. By introducing multi-point sampling at multiple polarization angles near the target center polarization angle and radiated power correction techniques, robust estimation of the antenna main lobe directional power can be achieved in noisy environments, further improving the repeatability and consistency of antenna transmission capability testing. Simultaneously, during calibration, the measured radiation pattern curve can be effectively fitted and outlier error points eliminated, thereby accurately extracting the correction factor and improving the stability and reliability of calibration compensation.

[0028] In the embodiments described in this specification, a standard antenna is first deployed on a turntable in an anechoic chamber. The standard antenna has been calibrated and specified in advance, and its transmission power is known. The standard antenna has stable power characteristics, no beam scanning, and minimal noise impact. The correction factor is then calculated using the standard antenna.

[0029] Specifically, first, the standard antenna is assigned a frequency, center frequency, and output power. The frequency set for the standard antenna is the same as that of the antenna under test. The same center frequency, resolution bandwidth, detection method, and reference level are set for the spectrum analyzer. Then, the turntable's rotation start angle, end angle, step size, and speed are set. The turntable is controlled to rotate within the angle range [θ0 - Δθ, θ0 + Δθ], where Δθ is the half-width of the sampling window, θ0 represents the target center polarization angle, and each polarization angle θ of the standard antenna within this range is acquired. i First radiated power P s i Where i = 0,1,2,…,n-1, and n represents the total number of sampling points. δθ represents the sampling interval.

[0030] Then the multiple polarization angles θ can be... i First radiated power P s i Filtering is performed to obtain the first radiated power curve based on the filtered first radiated power at each polarization angle. In the embodiments of this specification, the filtering method can be median filtering or moving average filtering, etc., and this specification does not limit the embodiments.

[0031] Then, the first radiated power curve is obtained by filtering the first radiated power at each polarization angle.

[0032] In the embodiments of this specification, obtaining the first radiant power curve based on the first radiant power at each polarization angle further includes: According to the formula P(θ = aθ) 2 The first radiation power curve is obtained by fitting the first radiation power at each polarization angle with + bθ + c, where θ represents the polarization angle, P(θ) represents the radiation power corresponding to the polarization angle θ in the first radiation power curve, and a, b and c are parameters.

[0033] Then, the target polarization angle and the target radiation power corresponding to the target polarization angle are determined based on the first radiation power curve. For example... Figure 3 As shown, determining the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve further includes: Step 301: Calculate the extreme points of the first radiation power curve; Step 302: Determine the polarization angle and radiation power corresponding to the extreme point, and use them as the target polarization angle and the target radiation power, respectively.

[0034] In the embodiments described in this specification, extreme points are calculated for the first radiation curve, which are also the centers of the main lobe of the radiation pattern. Specifically, the target polarization angle θ corresponding to the extreme point is... peak = -b / 2a, target radiated power P peak = aθ peak 2 +bθ peak + c.

[0035] According to the free-space path loss model, the theoretical radiated power of a standard antenna is: P theory = P tx + G tx +G rx -20log 10 (d) -20log 10 (f) – 32.45; Among them, P tx G represents the transmit power of a standard antenna. tx G represents the transmit gain of a standard antenna. rx d represents the receiving antenna gain, d represents the distance from the standard antenna to the reflecting surface in the anechoic chamber, and f represents the transmission signal frequency of the standard antenna.

[0036] Then, the difference between the theoretical radiated power and the target radiated power is calculated to obtain the correction factor, the formula of which is: C field = P theory – P peak ; Among them, C field P represents the correction factor. peak P represents the target radiated power. theory This represents the theoretical radiated power.

[0037] Then, the standard antenna on the turntable is replaced with the antenna under test, and the frequency of the antenna under test is the same as that of the standard antenna.

[0038] The turntable is controlled to rotate within the same angle range [θ0-Δθ, θ0+Δθ] as the standard antenna when acquiring the first radiated power. The turntable is set with the same step size and speed, and the polarization angle θ of the antenna under test is acquired within this range. i The second radiated power P m i .

[0039] Then, based on the correction factor C field For each polarization angle θ i The second radiated power P m i The correction is made, and the formula is as follows: Pf m i = P m i + C field .

[0040] Pf m i This represents the corrected second radiative power corresponding to the i-th polarization angle.

[0041] In actual testing, the following issues affect measurement accuracy: (1) The turntable has positioning errors or mechanical inertia, which causes deviations in the actual measurement points of the target angle; (2) The spectrum analyzer measurement has instantaneous fluctuations and noise, which can easily cause the power value measured at a certain angle to be discrete; (3) When the main lobe of the antenna pattern is steep, a small change in angle leads to a large change in power, resulting in low single-point measurement accuracy.

[0042] Therefore, this specification proposes a more robust weighted integral angular domain filtering algorithm. By sampling at multiple points near the target angle and combining the Gaussian kernel weighted integral concept, the power data is smoothed and enhanced, thereby more accurately calculating the true main lobe power corresponding to the target angle. It does not rely on fitting models (such as polynomials or curves) but instead uses kernel weights to fuse measured data, exhibiting nonparametric estimation properties.

[0043] Specifically, the weight of each polarization angle is calculated with the target center polarization angle as the center. The formula is:

[0044] Where, ω i Let σ = δθ represent the weight of the i-th polarization angle.

[0045] Then the weights for each polarization angle are normalized:

[0046] Where, ω N i Let be the normalized weight for the i-th polarization angle, and n represent the total number of polarization angles. .

[0047] Then for each polarization angle θ i The corresponding corrected second radiated power Pf m i Perform smoothing: Ps m i = ω N i ·Pfm i ; Among them, Ps m i This represents the smoothed second radiated power corresponding to the i-th polarization angle.

[0048] Then calculate the final estimated target angular power of the antenna under test:

[0049] Among them, P est This represents the final estimated target angular power of the antenna under test.

[0050] Then calculate the total radiated power of the antenna under test:

[0051] TRP dBm = 10log 10 (TRP mW ); Among them, TRP dBm G represents the total radiated power. rx λ represents the receiving antenna gain, and λ represents the wavelength of the signal transmitted by the antenna under test. The angle step indicates the polarization direction. θ represents the angle step in the azimuth direction. i,j This represents the value of the i-th polarization angle of the antenna under test at the j-th azimuth angle.

[0052] In the embodiments of this specification, the range of azimuth angles is set based on experience, and this specification does not impose any limitations on the embodiments. This can be understood as controlling the antenna under test to rotate in azimuth direction by one angle step. At this azimuth angle, the angle step is taken according to the polarization direction. The system rotates to obtain the second radiated power corresponding to each polarization angle, then corrects it to obtain the corrected second radiated power. Finally, it smooths the corrected second radiated power to obtain the target angular power P at that azimuth angle. est Repeat the above process to measure and calculate the target angular power at each azimuth angle, and then calculate the target angular power at each azimuth angle according to the above formula to obtain the total radiated power.

[0053] It should be noted that when using a standard antenna to calculate the correction factor, the azimuth angle is a fixed value. This azimuth angle value is set according to the direction of the reflecting surface, that is, so that the signal transmission direction of the standard antenna is perpendicular to the reflecting surface at the target center polarization angle θ0.

[0054] The transmittance capability of the antenna under test is determined based on the total radiated power and the predetermined power index value.

[0055] For example, it can be determined whether the total radiated power exceeds the predetermined power index value. If so, it means that the transmission capability of the antenna under test meets the standard.

[0056] Based on the same inventive concept, embodiments of this specification also provide an antenna transmission capability testing device that eliminates fluctuations, such as... Figure 4 As shown, it includes: The radiated power acquisition unit 401 is used to acquire the first radiated power of a standard antenna in an anechoic chamber at multiple polarization angles. Fitting unit 402 is used to obtain the first radiation power curve based on the first radiation power at each polarization angle; The target radiation power determination unit 403 is used to determine the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve. The correction factor calculation unit 404 is used to calculate the correction factor based on the theoretical radiated power of the standard antenna and the target radiated power. The radiation power acquisition unit 401 is further configured to acquire the second radiation power of the antenna under test at the plurality of polarization angles after replacing the standard antenna in the dark room with the antenna under test. The total radiated power calculation unit 405 is used to correct the second radiated power at each polarization angle according to the correction factor, smooth the corrected second radiated power, and calculate the total radiated power of the antenna under test. The transmission capability judgment unit 406 is used to determine whether the transmission capability of the antenna under test meets the standard based on the total radiated power.

[0057] The beneficial effects obtained by the above-described device are the same as those obtained by the above-described method, and will not be described in detail in the embodiments of this specification.

[0058] like Figure 5The diagram illustrates the structure of a computer device according to an embodiment of this specification. The instruction issuance model described in this embodiment can be applied to the computer device in this embodiment to execute the methods described in the embodiments of this specification. The computer device 502 may include one or more processing devices 504, such as one or more central processing units (CPUs), each of which may implement one or more hardware threads. The computer device 502 may also include any storage resource 506 for storing information of any kind, such as code, settings, data, etc. Without limitation, for example, the storage resource 506 may include any type of RAM, any type of ROM, flash memory, hard disk, optical disk, etc. More generally, any storage resource can use any technology to store information. Furthermore, any storage resource may provide volatile or non-volatile retention of information. Furthermore, any storage resource may represent a fixed or removable component of the computer device 502. In one case, when the processing device 504 executes associated instructions stored in any storage resource or combination of storage resources, the computer device 502 may perform any operation of the associated instructions. The computer device 502 also includes one or more drive mechanisms 508 for interacting with any storage resource, such as hard disk drive mechanism, optical disk drive mechanism, etc.

[0059] Computer device 502 may also include an input / output module 510 (I / O) for receiving various inputs (via input device 512) and providing various outputs (via output device 514). A specific output mechanism may include a presentation device 516 and an associated graphical user interface (GUI) 518. In other embodiments, the input / output module 510 (I / O), input device 512, and output device 514 may be omitted, and the device may function solely as a computer device within a network. Computer device 502 may also include one or more network interfaces 520 for exchanging data with other devices via one or more communication links 522. One or more communication buses 524 couple the components described above together.

[0060] Communication link 522 can be implemented in any way, such as via a local area network, a wide area network (e.g., the Internet), a point-to-point connection, or any combination thereof. Communication link 522 may include any combination of hardwired links, wireless links, routers, gateway functions, name servers, etc., governed by any protocol or combination of protocols.

[0061] This specification also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method.

[0062] This specification also provides computer-readable instructions, wherein when a processor executes the instructions, the program therein causes the processor to perform the above-described method.

[0063] It should be understood that in the various embodiments of this specification, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this specification.

[0064] It should also be understood that, in the embodiments of this specification, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the embodiments of this specification, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0065] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed in this specification can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of the embodiments in this specification.

[0066] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0067] In the embodiments provided in this specification, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through some interfaces, devices, or units, or they may be electrical, mechanical, or other forms of connection.

[0068] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments described in this specification, depending on actual needs.

[0069] Furthermore, the functional units in the various embodiments of this specification can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0070] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this specification, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this specification. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0071] This specification describes the principles and implementation methods of the embodiments using specific examples. The above descriptions of the embodiments are only for the purpose of helping to understand the methods and core ideas of the embodiments in this specification. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the embodiments in this specification. Therefore, the content of this specification should not be construed as a limitation on the embodiments in this specification.

Claims

1. A method for testing antenna transmission capability to eliminate fluctuations, characterized in that, The method includes: Obtain the first radiated power of a standard antenna in an anechoic chamber at multiple polarization angles; The first radiation power curve is obtained based on the first radiation power at each polarization angle; The target polarization angle and the target radiation power corresponding to the target polarization angle are determined based on the first radiation power curve. The correction factor is calculated based on the theoretical radiated power of the standard antenna and the target radiated power; After replacing the standard antenna in the anechoic chamber with the antenna under test, the second radiated power of the antenna under test at the multiple polarization angles is obtained; The second radiated power at each polarization angle is corrected according to the correction factor, and the corrected second radiated power is smoothed to calculate the total radiated power of the antenna under test. The total radiated power is used to determine whether the transmission capability of the antenna under test meets the standard.

2. The method according to claim 1, characterized in that, The first radiation power curve, obtained from the first radiation power at each polarization angle, further includes: According to the formula P(θ = aθ) 2 The first radiation power curve is obtained by fitting the first radiation power at each polarization angle with + bθ + c, where θ represents the polarization angle, P(θ) represents the radiation power corresponding to the polarization angle θ in the first radiation power curve, and a, b and c are parameters.

3. The method according to claim 2, characterized in that, Determining the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve further includes: Calculate the extreme points of the first radiated power curve; The polarization angle and radiation power corresponding to the extreme point are determined and used as the target polarization angle and the target radiation power, respectively.

4. The method according to claim 1, characterized in that, Before obtaining the first radiation power curve based on the first radiation power at each polarization angle, the method further includes: The first radiated power at the plurality of polarization angles is filtered so that the first radiated power curve can be obtained based on the filtered first radiated power at each polarization angle.

5. The method according to claim 1, characterized in that, The formula for calculating the correction factor based on the theoretical radiated power of the standard antenna and the target radiated power is as follows: C field = P theory – P peak ; Among them, C field P represents the correction factor. peak P represents the target radiated power. theory Indicates theoretical radiated power; P theory = P tx + G tx +G rx -20log 10 (d) -20log 10 (f) – 32.45; Among them, P tx G represents the transmit power of a standard antenna. tx G represents the transmit gain of a standard antenna. rx d represents the receiving antenna gain, d represents the distance from the standard antenna to the reflecting surface in the anechoic chamber, and f represents the transmission signal frequency of the standard antenna.

6. The method according to claim 1, characterized in that, Correcting the second radiant power at each polarization angle according to the correction factor further includes: The second radiated power is calculated by summing the second radiated power with the correction factor to obtain the corrected second radiated power.

7. The method according to claim 1, characterized in that, The formula for smoothing the corrected second radiated power is as follows: P.S. m i = ω N i ·Pf m i ; Among them, Ps m i Pf represents the smoothed second radiated power corresponding to the i-th polarization angle. m i This represents the corrected second radiative power corresponding to the i-th polarization angle; Where, ω i θ represents the weight of the i-th polarization angle. i Let θ represent the value of the i-th polarization angle, θ0 represent the polarization angle of the target center, σ = δθ, δθ represent the sampling interval of the polarization angle, and n represent the total number of polarization angles.

8. The method according to claim 7, characterized in that, The formula for calculating the total radiated power of the antenna under test is as follows: TRP dBm = 10log 10 (TRP mW ); Among them, TRP dBm G represents the total radiated power. rx λ represents the receiving antenna gain, and λ represents the wavelength of the signal transmitted by the antenna under test. , The angle step indicates the polarization direction. θ represents the angle step in the azimuth direction. i,j This represents the value of the i-th polarization angle of the antenna under test at the j-th azimuth angle.

9. The method according to claim 1, characterized in that, Judging whether the transmission capability of the antenna under test meets the standard based on the total radiated power further includes: The transmittance capability of the antenna under test is determined based on the total radiated power and the predetermined power index value.

10. An antenna transmission capability testing device for eliminating fluctuations, characterized in that, The device includes: The radiated power acquisition unit is used to acquire the first radiated power of a standard antenna in an anechoic chamber at multiple polarization angles. The fitting unit is used to obtain the first radiation power curve based on the first radiation power at each polarization angle. The target radiation power determination unit is used to determine the target polarization angle and the target radiation power corresponding to the target polarization angle based on the first radiation power curve. The correction factor calculation unit is used to calculate the correction factor based on the theoretical radiated power of the standard antenna and the target radiated power. The radiation power acquisition unit is further configured to acquire the second radiation power of the antenna under test at the plurality of polarization angles after replacing the standard antenna in the anechoic chamber with the antenna under test. The total radiated power calculation unit is used to correct the second radiated power at each polarization angle according to the correction factor, smooth the corrected second radiated power, and calculate the total radiated power of the antenna under test. The transmission capability judgment unit is used to determine whether the transmission capability of the antenna under test meets the standard based on the total radiated power.

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