Test system and test method for satellite-borne digital array antenna multi-beam forming system

Abstract

The present application relates to the technical field of satellite communication and antenna system testing, and discloses a test system for a satellite-borne digital array antenna multi-beam forming system, including: a test device for communicating and interacting with the product under test, controlling the signal source, spectrum analyzer, and power meter, performing automated testing, and collecting data and uploading it to a computer analysis system; a power splitter switch module for allocating signals to the receiving and transmitting channels according to the number of receiving and transmitting channels of the product under test, and performing amplitude and phase consistency verification; a test backplane for converting the interface of the product under test into a universal interface compatible with the test device, and supporting self-loop or transmission testing; a computer analysis system for receiving test data and performing data analysis to generate amplitude and phase consistency indicators. The present invention adopts an amplitude and phase consistency test solution for module-level products, covering all stages of the antenna system. At the same time, the test can be performed before system integration, effectively reducing the complexity of later debugging.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite communication and antenna system testing, in particular to a testing system and a testing method for a satellite-borne digital array antenna multi-beam forming system. Background Art

[0002] As key components in modern satellite communications, remote sensing, and navigation systems, spaceborne digital array antennas are widely used for efficient, high-performance signal transmission and reception. With the continuous advancement of multi-beamforming technology, the complexity and performance requirements of antenna systems are also increasing. To ensure the stability and accuracy of antenna systems, precise amplitude and phase consistency testing is essential, especially for effective verification at the module level. However, due to the high-frequency complexity of antenna systems and the interaction of multiple channels, traditional testing methods have certain limitations in practical applications.

[0003] Currently, existing technologies mostly utilize post-system integration amplitude and phase consistency testing, typically performed only after the antenna system is fully integrated. These technologies primarily focus on testing the transmit channel by inspecting the completed antenna system, often neglecting the verification of the receive elements. Furthermore, the testing process in existing technologies often relies on manual intervention. Frequent manual operations can compromise test stability and accuracy, and the analysis and report generation of test results also rely on manual labor, making the entire testing process cumbersome and time-consuming.

[0004] Existing testing methods primarily focus on the post-system integration phase, often failing to identify potential issues in the early stages of product development. This leads to difficulties and inefficiencies in subsequent design and optimization processes. Therefore, how to conduct comprehensive amplitude and phase consistency testing of antenna systems at the module level, while also enabling automated control and data analysis, has become a pressing issue. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a test system and test method for a satellite-borne digital array antenna multi-beamforming system, which solves the problem in the existing technology that comprehensive module-level amplitude and phase consistency testing cannot be performed in the early stages of antenna system development, thereby leading to difficulties in later design optimization and low test efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A test system for a satellite-borne digital array antenna multi-beamforming system comprises:

[0007] Test equipment, used to communicate and interact with the product under test, control the signal source, spectrum analyzer, and power meter, perform automated testing, and collect data and upload it to a computer analysis system;

[0008] The power splitter switch module is used to distribute signals to the receiving and transmitting channels according to the number of receiving and transmitting channels of the product under test, and perform amplitude and phase consistency verification;

[0009] Test backplane, used to convert the interface of the product under test into a universal interface compatible with the test equipment, and supports self-loop or transmission testing;

[0010] A computer analysis system for receiving test data and performing data analysis to generate amplitude and phase consistency indicators;

[0011] Automation control software is used to control the frequency and power parameters of signal sources, power splitter modules and other devices, and perform automated testing.

[0012] Preferably, the power division switch module includes multiple independent signal paths, which can selectively distribute signals to different receiving and transmitting channels according to test requirements, so as to perform corresponding amplitude and phase consistency verification.

[0013] Preferably, the test backplane supports connecting the transmission channel loop of the product under test to the receiving channel to perform transmission channel consistency verification.

[0014] Preferably, the computer analysis system calculates and generates a phase consistency index and an amplitude consistency index by processing multiple sets of test data. The phase consistency index includes the mean and variation range of the phase difference between channels at each frequency point, and the amplitude consistency index includes the deviation between the maximum and minimum values ​​during the test.

[0015] Preferably, the automation control software is used to perform periodic power-off operations to simulate different operating conditions and verify the stability of the antenna system.

[0016] The present invention also provides a method for testing a satellite-borne digital array antenna multi-beam forming system, comprising the following steps:

[0017] Step 1: Under temperature balance conditions, output signals at multiple frequencies through a signal source, distribute the signals to multiple receiving channels of the product under test through a power splitter module, and collect data.

[0018] Step 2: Adjust the power of the signal source to ensure that the signal power of each receiving channel is within an appropriate range;

[0019] Step 3: Repeat the output of the signal at each frequency point and collect data from each receiving channel separately, collecting multiple sets of data for subsequent analysis;

[0020] Step 4: Based on the collected data, calculate the phase difference and amplitude difference of each channel at each frequency point to obtain the phase consistency index and amplitude consistency index of the receiving channel;

[0021] Step 5: After fully verifying the receiving channel, test the transmitting channel. The steps are the same as the receiving channel consistency test. Verify the consistency of the transmitting channel through the verified receiving channel loop.

[0022] Preferably, during the test, changes in frequency and power are controlled by automated control software and are switched and configured based on a preset test plan.

[0023] Preferably, the amplitude and phase consistency indicators of the receiving and transmitting channels are calculated by analyzing the test data, wherein the amplitude consistency indicator is obtained by calculating the maximum and minimum deviations of the test signals, and the phase consistency indicator is obtained by calculating the mean phase difference between each channel and its variation range.

[0024] Preferably, during the test, the automated control software controls the power-off and power-on operations of the test equipment according to a preset time interval to verify the stability of the multi-beam antenna system.

[0025] Preferably, the data analysis process includes processing the test results of multiple frequency points and multiple channels, generating a report including amplitude and phase consistency indicators and performance evaluation, and evaluating the overall performance of the antenna system.

[0026] The present invention provides a test system and method for a satellite-borne digital array antenna multi-beam forming system. The system has the following beneficial effects:

[0027] 1. This invention utilizes a module-level amplitude and phase consistency testing solution, covering all stages of the antenna system. Furthermore, testing can be performed before system integration, effectively reducing the complexity of later debugging. Compared to existing testing methods, which typically only require post-integration testing, this solution makes system design and optimization more efficient, avoiding the need for repeated modifications later.

[0028] 2. This invention uses a power splitter switch module to flexibly distribute signals to multiple receive and transmit channels, enabling simultaneous verification of the consistency of both transmit and receive elements. This not only improves testing efficiency but also ensures more comprehensive performance verification. Existing technologies often focus solely on testing transmit channels, neglecting the inspection of receive elements. This invention addresses this gap, ensuring the overall stability of the antenna system.

[0029] 3. The automated control software of this invention reduces human intervention and can automatically perform periodic power-off operations to simulate stability testing under different operating conditions. This technical solution significantly improves the repeatability and consistency of testing and reduces errors caused by human factors. Compared with existing technologies that rely on manual intervention and produce unstable test results, the automated solution of this invention ensures the efficiency and reliability of the testing process.

[0030] 4. By fully automating data analysis and report generation during the test process, this invention reduces engineers' manual analysis time and significantly improves test speed and accuracy. Compared to the tedious manual analysis and report generation steps required by traditional technologies, this invention provides more immediate and accurate test results, helping to accelerate R&D and production cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 One of the hardware system design block diagrams of the present invention;

[0032] Figure 2 This is the second block diagram of the hardware system design of the present invention;

[0033] Figure 3 This is a block diagram of the power splitter switch module circuit design of the present invention;

[0034] Figure 4 This is a schematic diagram of the principle of the test backplane of the present invention;

[0035] Figure 5 Schematic diagram of the method of the present invention. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Please see the attached Figure 1-4 An embodiment of the present invention provides a test system for a satellite-borne digital array antenna multi-beamforming system, comprising:

[0038] Test equipment, used to communicate and interact with the product under test, control the signal source, spectrum analyzer, and power meter, perform automated testing, and collect data and upload it to a computer analysis system;

[0039] The power splitter switch module is used to distribute signals to the receiving and transmitting channels according to the number of receiving and transmitting channels of the product under test, and perform amplitude and phase consistency verification;

[0040] Test backplane, used to convert the interface of the product under test into a universal interface compatible with the test equipment, and supports self-loop or transmission testing;

[0041] A computer analysis system for receiving test data and performing data analysis to generate amplitude and phase consistency indicators;

[0042] Automation control software is used to control the frequency and power parameters of signal sources, power splitter modules and other devices, and perform automated testing.

[0043] The power splitter switch module includes multiple independent signal paths, which can selectively distribute signals to different receiving and transmitting channels according to test requirements to perform corresponding amplitude and phase consistency verification.

[0044] The test backplane supports connecting the transmit channel loop of the product under test to the receive channel to verify the consistency of the transmit channel.

[0045] The computer analysis system calculates and generates phase consistency indicators and amplitude consistency indicators by processing multiple sets of test data. The phase consistency indicator includes the mean and variation range of the phase difference between channels at each frequency point, and the amplitude consistency indicator includes the deviation between the maximum and minimum values ​​during the test process.

[0046] Automated control software is used to perform periodic power-off operations to simulate different operating conditions and verify the stability of the antenna system.

[0047] Please see the attached Figure 5 The present invention also provides a method for testing a satellite-borne digital array antenna multi-beam forming system, comprising the following steps:

[0048] Step 1: Under temperature balance conditions, output signals at multiple frequencies through a signal source, distribute the signals to multiple receiving channels of the product under test through a power splitter module, and collect data.

[0049] Step 2: Adjust the power of the signal source to ensure that the signal power of each receiving channel is within an appropriate range;

[0050] Step 3: Repeat the output of the signal at each frequency point and collect data from each receiving channel separately, collecting multiple sets of data for subsequent analysis;

[0051] Step 4: Based on the collected data, calculate the phase difference and amplitude difference of each channel at each frequency point to obtain the phase consistency index and amplitude consistency index of the receiving channel;

[0052] Step 5: After fully verifying the receiving channel, test the transmitting channel. The steps are the same as the receiving channel consistency test. Verify the consistency of the transmitting channel through the verified receiving channel loop.

[0053] During the test, frequency and power changes are controlled by automated control software and switched and configured based on a preset test plan.

[0054] By analyzing the test data, the amplitude and phase consistency indicators of the receiving and transmitting channels are calculated. The amplitude consistency indicator is calculated by the maximum and minimum deviations of the test signals, and the phase consistency indicator is calculated by the mean phase difference between each channel and its variation range.

[0055] During the test, the automated control software controlled the power-off and power-on operations of the test equipment according to preset time intervals to verify the stability of the multi-beam antenna system.

[0056] The data analysis process includes processing the test results of multiple frequencies and multiple channels, generating reports, including amplitude and phase consistency indicators and performance evaluation, and evaluating the overall performance of the antenna system.

[0057] In this embodiment, the power splitter switch module is used to effectively distribute signals to different receive and transmit channels, enabling amplitude and phase consistency verification of the multi-beamforming system of a spaceborne digital array antenna. The power splitter switch module precisely controls the signal path based on signal requirements, ensuring efficient signal transmission and providing flexible switching capabilities during testing.

[0058] The power splitter switch module in this embodiment primarily distributes the signal source output to different channels based on different testing requirements. This design ensures system efficiency and accuracy, enabling the test system to verify the performance of both the receiving and transmitting channels individually without interfering with other channels. The power splitter switch module plays a particularly important role in verifying amplitude and phase consistency.

[0059] Generally speaking, power splitter modules operate based on electronic switching technology, which selects different signal paths by controlling switching elements within the circuit. After the signal enters the power splitter module, it is distributed to the desired receive or transmit channel using various switching logic. Each time the signal switches, the module's internal circuitry automatically adjusts to ensure that the signal remains unaffected and maintains phase and amplitude consistency.

[0060] Alternatively, the power splitter module includes multiple independent signal paths, allowing for flexible and selective signal distribution to multiple receive or transmit channels based on test requirements. Specifically, internal switching elements (such as relays or switch chips) within the module enable switching between channels, ensuring that each channel receives the required test signal. This feature provides the power splitter module with greater adaptability and accuracy for multi-channel testing.

[0061] In one possible implementation, the power splitter module is controlled by automated control software, which precisely switches different signal paths according to a pre-set test plan. This control approach reduces manual intervention and improves test efficiency and accuracy. Furthermore, the power splitter module's control logic dynamically adjusts signal distribution based on the needs of each test channel, ensuring test continuity and stability.

[0062] In some embodiments, the number of output channels of the power splitter switch module can be customized based on the number of channels of the product being tested. For example, in some high-performance antenna systems, the power splitter switch module may need to support more channel switching to test more receive and transmit channels simultaneously.

[0063] Specifically, the working principle of the power splitter switch module can be further explained by the following formula:

[0064] ;

[0065] in, For the output signal path, is the total number of channels, Indicates that the signal Amplitude adjustment on each path, Indicates the The selection status of each signal path (for example, 1 indicates signal path selection, 0 indicates not selection).

[0066] Amplitude-phase consistency calculation formula:

[0067] ;

[0068] in, Indicates the The phase difference of the channels, and Respectively The phase of the channel and the reference channel.

[0069] Amplitude consistency calculation formula:

[0070] ;

[0071] in, For the The phase difference of the receiving channels, and The formula calculates the difference between the maximum and minimum amplitudes to obtain the amplitude consistency index, ensuring the amplitude stability of the received signal.

[0072] This formula calculates amplitude consistency by processing the phase difference, ensuring that each channel performs consistently under parameters such as frequency and power.

[0073] In some embodiments, the power splitter switch module can also perform fault detection based on actual needs. If a fault occurs in a channel, the power splitter switch module can automatically switch to a backup path through a detection mechanism to ensure continuous testing. This fault detection and recovery mechanism can improve system reliability and ensure long-term stability.

[0074] As an option, the switching speed and accuracy of the power splitter module can be customized to meet test requirements. For high-frequency signal testing, the power splitter module can complete the signal path switching in a very short time, thus reducing the delay during the signal switching process. By increasing the switching speed, the power splitter module can adapt to the needs of higher frequency testing.

[0075] In one possible implementation, the power splitter module also has an embedded self-diagnostic function. During automated testing, the power splitter module can automatically detect its operating status and adjust the switching logic based on the detection results to ensure that the signal path is always in an optimal state during the test.

[0076] In this embodiment, the power splitter switch module is a crucial component of the test system, primarily responsible for distributing the signal source output to different receive and transmit channels as needed. By precisely controlling the signal path, the power splitter switch module ensures that signals are transmitted as needed, thereby enabling amplitude and phase consistency testing of each channel. The power splitter switch module plays a crucial role in signal distribution and testing, ensuring the accuracy and efficiency of the entire testing process.

[0077] Typically, power splitter modules employ efficient circuit switching technology, using built-in switching elements to select different signal paths. This switching mechanism enables precise signal distribution across multiple channels, ensuring consistent frequency and amplitude across all channels.

[0078] Alternatively, the power splitter module can be designed to support multiple parallel signal paths, allowing signals to be distributed to multiple receive or transmit channels simultaneously, depending on test requirements. In certain high-performance antenna systems, the power splitter module can support simultaneous switching of more channels to accommodate complex test environments. This design enables the test system to verify multiple channels simultaneously, significantly improving test efficiency.

[0079] Specifically, the power splitter switch module enables flexible switching between receive and transmit channels. Whenever the signal source outputs a signal, the power splitter switch module selectively distributes the signal to different channels based on test requirements. This process is achieved through switching elements in the circuit, with the selected state of each signal path determined by control logic. This control logic is typically managed by automated control software to ensure real-time and accurate signal distribution and switching.

[0080] In one possible implementation, the power splitter module consists of multiple independent signal paths, allowing flexible selection of the appropriate channel for signal transmission based on test requirements. For example, in high-bandwidth applications, the power splitter module can simultaneously distribute signals from multiple frequencies to multiple channels, thereby increasing test parallelism and efficiency. The switching of these signal paths can be coordinated by automated control software to ensure accurate signal distribution for each test channel.

[0081] As an option, the switching time and accuracy of the power splitter module can be adjusted to meet specific test requirements. Fast switching is particularly important in high-frequency signal testing. The power splitter module can switch signal paths in a fraction of a second, ensuring signal accuracy and consistency during testing. This fast switching mechanism enables the test system to accurately verify amplitude and phase consistency at high frequencies.

[0082] In some embodiments, the power splitter switch module also performs fault detection and recovery. If a fault is detected on a channel during testing, the power splitter switch module immediately triggers a switchover, automatically switching the signal to a backup path to ensure uninterrupted testing. This design enhances system reliability and fault tolerance, preventing potential interference or signal loss during testing.

[0083] In one possible implementation, the power splitter module uses adaptive technology to automatically adjust the signal path based on the system's real-time testing requirements. This adaptive adjustment allows the power splitter module to flexibly respond to different test tasks and provide more efficient testing support.

[0084] The test backplane plays a crucial role in the entire test system. It converts the interfaces of the product under test into universal interfaces compatible with the test equipment, ensuring smooth signal transmission to each test module. By providing a physical connection, the test backplane ensures signal flow between the test equipment and the antenna under test, while also supporting the input and output of multi-channel signals, ensuring the integrity and effectiveness of the test.

[0085] The test backplane in this embodiment works closely with the aforementioned power splitter switch module and the receiving and transmitting channels to ensure accurate signal transmission and phase consistency verification during multi-channel testing. The test backplane provides the necessary connectivity for the test system by converting physical interfaces and redistributing electrical signals. Through the test backplane, signals output from the test equipment can be stably transmitted to the various ports of the antenna under test for corresponding testing and verification.

[0086] Typically, test backplanes are designed with multi-channel, multi-band signal transmission requirements in mind. Therefore, their interface types and layout can be customized based on the characteristics of the product under test. In certain antenna systems with a high number of channels, the test backplane design may include multiple signal interfaces to support high-density signal input and output. Furthermore, the test backplane supports loopback or transmission testing, ensuring accurate verification between the transmit and receive channels through loopback connections.

[0087] As an option, the test backplane features a modular design. This allows for flexible addition or removal of signal interfaces based on varying test requirements, thereby enhancing system adaptability and scalability. For example, the test backplane can be equipped with additional signal connection ports to accommodate higher channel counts or more complex test requirements. Furthermore, the test backplane seamlessly integrates with the signal sources and analysis systems within the test equipment, enabling automated signal transfer and testing.

[0088] Specifically, the test backplane plays a crucial role in the signal transmission process. During the receive channel verification phase, the signal output from the power splitter module is connected to the receive port of the antenna under test through the test backplane for amplitude and phase consistency testing. Similarly, during the transmit channel verification phase, the test backplane loops the signal back to the receive channel to verify transmit channel consistency. Throughout this process, the test backplane ensures signal integrity and consistency through its high-quality interface connections and precise signal transmission.

[0089] In some embodiments, the test backplane also supports fault diagnosis. If a signal transmission problem occurs on a particular channel, the test backplane can quickly identify and report the fault location through the monitoring system, providing effective feedback. This feature further enhances system stability and reliability.

[0090] As an option, the test backplane design also takes into account the requirements for high-frequency signal processing. In high-frequency test environments, signal attenuation and noise are often more severe. Therefore, the test backplane design incorporates specialized signal transmission technologies, such as low-loss transmission lines and high-quality connectors, to ensure stable and accurate signal transmission.

[0091] In one possible implementation, the test backplane is managed by automated control software, which not only switches signal paths but also monitors signal transmission status in real time. Working in conjunction with the control software, the test backplane automatically adjusts signal interfaces and connection methods during different test phases to ensure a smooth test process.

[0092] In some embodiments, the test backplane also features embedded signal conditioning, which allows real-time adjustments to the received signal to compensate for signal attenuation or interference. This conditioning capability enables the test system to handle a variety of complex test environments, ensuring that the signal remains optimal throughout the test process.

[0093] In this embodiment, the computer analysis system is a core component of the entire test system, responsible for receiving data from the test equipment and performing real-time processing, analysis, and evaluation. Based on the test data from each channel, the computer analysis system calculates corresponding performance indicators, such as phase consistency and amplitude consistency, generates detailed test reports, and evaluates the overall performance of the antenna system. Working in conjunction with the aforementioned power splitter switch module, test backplane, and automated control software, the computer analysis system efficiently completes multi-channel, multi-band testing tasks.

[0094] Typically, a computer analysis system consists of an efficient processing unit, a data storage module, and an interactive user interface. The computer analysis system receives signal data from the test equipment and performs a series of mathematical analysis operations to generate performance evaluation metrics, including phase consistency and amplitude consistency. These metrics provide data support for further optimizing antenna system design and verifying system stability.

[0095] Alternatively, a computer analysis system can seamlessly collaborate with the test equipment and automated control software's control modules to automatically perform tasks such as data acquisition, preprocessing, and formula calculations. This design reduces manual operations and improves test efficiency and accuracy. Furthermore, the computer analysis system boasts efficient parallel computing capabilities, enabling simultaneous processing of data from multiple frequencies and channels, meeting the testing requirements of large-scale antenna systems.

[0096] Specifically, the computer analysis system analyzes data using pre-defined test formulas to determine phase consistency and amplitude consistency indicators at each frequency point. During the data acquisition phase, the test equipment acquires and transmits signal data from the receive channel. The computer analysis system then performs noise reduction, processing, and calibration on this data to ensure data accuracy. The system then generates corresponding test results based on the designed calculation method and further evaluates the signal consistency of the receive and transmit channels.

[0097] In some embodiments, the computing module of the computer analysis system includes multiple processing cores, utilizing parallel computing technology to accelerate data processing. This design enables the computer analysis system to quickly analyze large amounts of data, thereby improving testing efficiency. This is particularly true when testing large-scale antenna systems, as the computer analysis system can rapidly calculate performance metrics for each test channel and generate real-time test reports.

[0098] As an option, the computer analysis system can generate different types of reports based on test requirements. For example, the system can generate phase and amplitude consistency indicators for each frequency point. The report includes detailed information such as the maximum and minimum deviations, the mean phase difference, and the range of variation at each frequency point. These indicators help testers determine whether the antenna system meets the expected performance standards, providing a basis for decision-making in product design and optimization.

[0099] In one possible implementation, the computer analysis system can also perform comparative analysis based on historical test data, generating charts showing system performance trends. This capability is useful for long-term testing and performance evaluation, helping technicians assess the stability and reliability of antenna systems under varying conditions. In addition to basic performance metrics, reports can also include stability analysis results to assess the long-term performance of antenna systems.

[0100] Specifically, after each test, the computer analysis system generates a report that includes all key test data and performance evaluation indicators. These reports help engineers understand the actual performance of the antenna system and guide subsequent design improvements or production optimization.

[0101] In some embodiments, the computer analysis system is also equipped with a self-learning algorithm that optimizes data processing and analysis methods through continuous feedback from test results. This technology enables the computer analysis system to adaptively adjust testing strategies and analysis methods based on different types of antenna systems, thereby more accurately evaluating the performance of various antenna types.

[0102] In the test system, automated control software plays a core role in controlling the operation of various components, including test equipment, power splitter modules, and computer analysis systems. Through its scheduling and management, the system achieves precise control of signal sources, test equipment, and various test modules, ensuring smooth testing. By comprehensively managing the test process, automated control software improves efficiency and accuracy, reducing the need for manual intervention.

[0103] In this embodiment, the automation control software's primary functions include controlling the frequency and power of the signal source, switching the power splitter module's paths, acquiring real-time signal data, dispatching operating instructions for the test equipment, and uploading test data and generating results for the computer analysis system. The software connects to the interfaces of each module, ensuring that each test step is automatically executed according to the pre-set plan and enabling real-time adjustment of test parameters to accommodate varying testing requirements.

[0104] Typically, automated control software exchanges real-time data with computer analysis systems, test equipment, and power splitter modules. Through automated control, the system can execute operations such as signal source frequency adjustment, power setting, and path switching according to the test plan, and can adjust test conditions based on real-time data. This automated process not only improves test efficiency but also effectively reduces the risk of human error.

[0105] As an option, the automation control software also features periodic execution capabilities. It automatically switches test channels, frequency switching, and power adjustments at set intervals to meet testing requirements under varying frequency conditions. Furthermore, the software can automatically complete multi-channel, multi-frequency testing tasks based on pre-set test plans, thereby improving the overall efficiency of the test system.

[0106] Specifically, the automated control software's operational process includes receiving signal data from the test equipment, calculating the required frequency, power, and channel switching instructions, updating the test status in real time, and adjusting the signal source parameters as needed. The software programmatically controls the signal source to ensure stable signal output at each frequency. After each frequency test is completed, it automatically switches to the next frequency for testing. Furthermore, the software monitors the test equipment's operating status in real time to ensure smooth coordination between modules.

[0107] In some embodiments, the automated control software's scheduling system supports parallel testing of multiple frequencies and channels. When testing across multiple frequency bands, the software automatically switches test frequencies and, as needed, reroutes the signal path of the power splitter module to ensure that the test signal is delivered to the correct receive or transmit channel. Furthermore, the software synchronizes data between modules in real time, ensuring accurate recording of test data for each channel.

[0108] As an option, the automated control software also includes a self-diagnostic function that monitors the operating status of the test equipment and individual modules in real time. If a module fails, the software automatically generates an alarm and initiates pre-defined recovery actions. This feature enhances test stability and system fault tolerance, preventing test interruptions caused by module failures.

[0109] In one possible implementation, automated control software integrates with the data acquisition system within the test equipment to capture all test data in real time during the test process and upload it to a computer analysis system for subsequent processing. Through a data upload interface, the automated control software ensures that every piece of data is transmitted promptly so that the analysis system can generate the appropriate test report. Furthermore, the automated control software can adjust test parameters based on feedback from the computer analysis system to optimize test results.

[0110] In some embodiments, the automated control software can also make dynamic adjustments based on historical test data and real-time feedback. For example, if the test results at a certain frequency do not meet expectations, the software can adjust the test plan based on pre-set optimization strategies, such as increasing the test frequency or adjusting the test power, to ensure that the system performance meets the expected level.

[0111] Under the same ambient temperature conditions, after the product reaches thermal equilibrium, use the signal source to output n fixed frequency points in sequence (n is determined by the bandwidth of the specific project, generally 2 frequency points are selected for a 50MHz bandwidth). After power division, the test fixture power division switch circuit-1 and power division switch circuit-2 modules output multiple signals that are connected to all receiving channels of the multiple modules under test. Then adjust the signal source power to ensure that the signal power of the module receiving port after power division is an appropriate value (the port receiving power is determined according to the specific receiving link design). Among them, the frequency and power are automatically controlled by software. The test frequency and power need to be manually designed in advance according to the application characteristics of the product, and then automatically switched and configured through the software. When the signal source outputs each frequency point, a set of data is collected for all receiving channels; then the frequency point is switched to collect the next set of data, and a total of n sets of data are collected. This is repeated. times, with a power-off interval of 20 seconds each time, and a total of n× groups of data were collected.

[0112] Data Analysis:

[0113] a) Analyze all The SFDR of group data can be used to obtain input dynamic indicators;

[0114] b) When testing at each frequency point, the average phase difference of 16384 samples between all channels and channel 1 after temperature equilibrium ( Change in the power-on test , we can get the corrected zero bias ( ), which is the index of the phase consistency of the receiving channel, as shown in Formula 1-3:

[0115] ;

[0116] ;

[0117] ;

[0118] in:

[0119] is the benchmark effective power-on sequence number, The last valid power-on sequence number, ( ;

[0120] is the number of valid power-on sequence numbers; is the channel number, 2≤m≤144;

[0121] : No. Power on, channel Between channel 1 The phase of each sample point;

[0122] : No. Power on, channel The phase difference with channel 1 and the change of the ath power-on;

[0123] : No. Changes in the power-on phase difference , the result after zero bias processing.

[0124] c) During each test, all channels collect the power of the same frequency point (16384 samples) , we can get the deviation between the maximum and minimum values ​​in this test , which is the indicator of the receiving channel amplitude consistency, as shown in Formula 4:

[0125] ;

[0126] Under the same ambient temperature conditions, after the product reaches thermal equilibrium, the transmission channels of multiple modules under test output A fixed frequency point is looped back to the multiple receiving channels of the same module after the test fixture power splitter switch circuit-2 module switch selection. All transmission channels are co-frequency coherent. When each frequency point is output, multiple receiving channels collect data simultaneously. After switching the frequency point, the next set of data is collected, and a total of n sets of data are collected. Re-power on and initialize, and then output the frequency point and collect data again. This process is repeated. times, each power outage interval is 20 seconds, a total of Group data.

[0127] Data Analysis:

[0128] a) Analyze all The output power and spurious output of the group data can be converted to obtain the output power and spurious output of all transmit channels.

[0129] b) When testing at each frequency point, the phase difference of 16384 samples between all channels and channel 1 The mean , after temperature equilibrium ( Change in the power-on test , we can get the corrected zero bias ( ), which is the phase consistency index of the transmitting channel. The calculation method is the same as formula 1-3;

[0130] During each test, all channels collect the power of the same frequency point (16384 samples) , we can get The deviation between the maximum and minimum values ​​in the test , that is, the transmit channel amplitude consistency test is qualified. The calculation method is the same as formula 4.

[0131] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A test system for a satellite-borne digital array antenna multi-beam forming system, characterized in that: include: Test equipment, used to communicate and interact with the product under test, control the signal source, spectrum analyzer, and power meter, perform automated testing, and collect data and upload it to a computer analysis system; The power splitter switch module is used to distribute signals to the receiving and transmitting channels according to the number of receiving and transmitting channels of the product under test, and perform amplitude and phase consistency verification; The power splitter module includes multiple independent signal paths, which can selectively distribute signals to different receiving and transmitting channels according to test requirements to perform corresponding amplitude and phase consistency verification; Test backplane, used to convert the interface of the product under test into a universal interface compatible with the test equipment, and supports self-loop or transmission testing; The test backplane supports connecting the transmit channel loop of the product under test to the receive channel to verify the consistency of the transmit channel; A computer analysis system for receiving test data and performing data analysis to generate amplitude and phase consistency indicators; Under the same ambient temperature conditions, after the product reaches thermal equilibrium, use the signal source to output n fixed frequency points in sequence. After power division by the test fixture power division switch circuit-1 and power division switch circuit-2 modules, the output multiple signals are connected to all receiving channels of the multiple modules under test. Then, adjust the signal source power to ensure that the signal power of the module receiving port after power division is appropriate. When the signal source outputs each frequency point, collect a set of data from all receiving channels, and then switch the frequency point to collect the next set of data. Collect n sets of data in total. Repeat this process b times, with a power-off interval of 20 seconds each time, for a total of n×b sets of data. Data Analysis: a) Analyze the SFDR of all n×b data sets. SFDR stands for Spurious-free Dynamic Range, which can be used to determine the input dynamic range. b) Receive channel phase consistency analysis The phase consistency of the receiving channel is obtained by the following steps: First, calculate the change Δθ of the mean phase difference of each channel in the (b-a+1) power-up test. k (m, 1), then the change is corrected to obtain the final phase consistency index That is, the index of the phase consistency of the receiving channel, such as formula (1)-(3): in: a is the base valid power-on sequence number, b is the last valid power-on sequence number, (b-a+1)≥12; k is the number of valid power-on numbers; m is the number of channel numbers, 2≤m≤144; The phase of the i-th sample point between channel m and channel 1 at the a-th power-up; Δθ k (m, 1): The phase difference between channel m and channel 1 at the kth power-up and the change at the ath power-up; The change of phase difference Δθ at the kth power-on k (m, 1), the result after zero bias processing; c) During each test, all channels collect the power P at the same frequency i , we can get the deviation ΔP between the maximum and minimum values ​​in this test, which is the index of the receiving channel amplitude consistency, as shown in formula (4): ΔP=MAX(P i )-MIN(P i ) (4); Under the same ambient temperature conditions, after the product reaches thermal equilibrium, the transmitting channels of multiple modules under test simultaneously output n fixed frequency points in sequence. After being selected by the switch of the test fixture power splitter switch circuit-2 module, they are looped back to the multiple receiving channels of the same module. All transmitting channels are co-frequency coherent. When each frequency point is output, multiple receiving channels simultaneously collect data. After switching the frequency point, the next set of data is collected, and a total of n sets of data are collected. After re-powering on and initializing, the frequency point is output again and data is collected. This process is repeated b times, with a power-off interval of 20 seconds each time, for a total of n×b sets of data. Automation control software, used to control the frequency and power parameters of signal sources, power splitter modules, and other devices, and perform automated testing; The automation control software is used to perform periodic power-off operations to simulate different working conditions and verify the stability of the antenna system.

2. The test system for a satellite-borne digital array antenna multi-beam forming system according to claim 1, characterized in that: The computer analysis system calculates and generates a phase consistency index and an amplitude consistency index by processing multiple sets of test data. The phase consistency index includes the mean and variation range of the phase difference between channels at each frequency point, and the amplitude consistency index includes the deviation between the maximum and minimum values ​​during the test process.

3. A method for testing a satellite-borne digital array antenna multi-beam forming system, according to a test system for a satellite-borne digital array antenna multi-beam forming system according to any one of claims 1-2, characterized in that: The following steps are involved: Step 1: Under temperature balance conditions, output signals at multiple frequencies through a signal source, distribute the signals to multiple receiving channels of the product under test through a power splitter module, and collect data. Step 2: Adjust the power of the signal source to ensure that the signal power of each receiving channel is within an appropriate range; Step 3: Repeat the output of the signal at each frequency point and collect data from each receiving channel separately, collecting multiple sets of data for subsequent analysis; Step 4: Based on the collected data, calculate the phase difference and amplitude difference of each channel at each frequency point to obtain the phase consistency index and amplitude consistency index of the receiving channel; Step 5: After fully verifying the receiving channel, test the transmitting channel. The steps are the same as the receiving channel consistency test. Verify the consistency of the transmitting channel through the verified receiving channel loop.

4. The method for testing a satellite-borne digital array antenna multi-beam forming system according to claim 3, wherein: During the test, frequency and power changes are controlled by automated control software and switched and configured based on a preset test plan.

5. The method for testing a satellite-borne digital array antenna multi-beam forming system according to claim 3, wherein: By analyzing the test data, the amplitude and phase consistency indicators of the receiving and transmitting channels are calculated. The amplitude consistency indicator is calculated by the maximum and minimum deviations of the test signals, and the phase consistency indicator is calculated by the mean phase difference between each channel and its variation range.

6. The method for testing a satellite-borne digital array antenna multi-beam forming system according to claim 4, wherein: During the test, the automated control software controls the power-off and power-on operations of the test equipment according to preset time intervals to verify the stability of the multi-beam antenna system.

7. The method for testing a satellite-borne digital array antenna multi-beam forming system according to claim 3, wherein: The data analysis process includes processing the test results of multiple frequency points and multiple channels, generating a report including amplitude and phase consistency indicators and performance evaluation, and evaluating the overall performance of the antenna system.

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