CN116155405A - Device and method for testing overall key performance of low-rail phased array user terminal - Google Patents

Device and method for testing overall key performance of low-rail phased array user terminal Download PDF

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Publication number
CN116155405A
CN116155405A CN202211491084.4A CN202211491084A CN116155405A CN 116155405 A CN116155405 A CN 116155405A CN 202211491084 A CN202211491084 A CN 202211491084A CN 116155405 A CN116155405 A CN 116155405A
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China
Prior art keywords
user terminal
module
radio frequency
test
phased array
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CN202211491084.4A
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Chinese (zh)
Inventor
王中林
黄印
唐晨亮
赵诚
武爱景
刘越
何江涛
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Beijing Institute of Remote Sensing Equipment
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Beijing Institute of Remote Sensing Equipment
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Priority to CN202211491084.4A priority Critical patent/CN116155405A/en
Publication of CN116155405A publication Critical patent/CN116155405A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/29—Performance testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18519—Operations control, administration or maintenance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention relates to a device and a method for testing the key performance of a whole low-orbit phased array user terminal, and aims to solve the problem of insufficient coverage of test indexes of a low-orbit satellite communication terminal in the prior art. The utility model provides a low rail phased array user terminal complete machine key performance testing arrangement, includes: the system comprises a transmitting radio frequency performance testing module, a receiving radio frequency performance testing module, a phased array antenna wave beam testing module, a low-orbit satellite signal simulation module and a testing analysis module, wherein: the emission radio frequency performance test module is used for measuring emission spurious parameters and the like of the terminal; the receiving radio frequency performance test module is used for measuring parameters such as receiving noise of the terminal; the beam testing module is used for measuring parameters such as the terminal beam pointing precision, the beam width and the like; the low-orbit satellite signal simulation module is used for simulating a low-orbit satellite signal and is matched with the terminal to realize the measurement of beam pointing tracking error; the test analysis module is used for analyzing the terminal test data and automatically generating a test report.

Description

Device and method for testing overall key performance of low-rail phased array user terminal
Technical Field
The invention relates to the technical field of complete machine testing of satellite communication terminals, in particular to a device and a method for testing the key performance of a complete machine of a low-orbit phased array user terminal.
Background
The satellite communication terminal is the only entrance of a user accessing the satellite internet, and with the development of a low-orbit satellite constellation, the phased array antenna can rapidly realize the wide-angle beam steering to realize different satellite tracking by virtue of the advantages of two-dimensional electronic scanning, has wide development prospect and gradually becomes the main form of the satellite communication terminal antenna. As a brand new device, the low-orbit phased array user terminal has the problems of different tracking satellite orbits, complex motion conditions of a terminal carrier, non-uniform test index requirements and the like. Without a uniform, adequate coverage test, it is easy to cause phased array user terminals to fail to access low orbit satellites. Therefore, how to formulate a unified test method to improve the success rate of low-orbit satellite access becomes a problem to be solved in the prior art.
Disclosure of Invention
The invention provides a device and a method for testing the key performance of a whole low-orbit phased array user terminal, and aims to improve the whole low-orbit phased array user terminal test coverage and the success rate of low-orbit satellite access.
The key performance testing device of the whole low-orbit phased array user terminal comprises a transmitting radio frequency performance testing module (1), a receiving radio frequency performance testing module (2), a phased array antenna beam testing module (3), a low-orbit satellite signal simulation module (4) and a testing analysis module (5); the system comprises a phased array antenna beam test module (3), a low-orbit satellite signal simulation module (4), a transmitting performance test module (1), a receiving radio frequency performance test module (2), a test analysis module (5), a phased array antenna beam test module (3) and a low-orbit satellite signal simulation module (4), wherein the transmitting performance test module (1) is connected with the receiving radio frequency performance test module (2), the receiving radio frequency performance test module (2) is connected with the phased array antenna beam test module (3) and the low-orbit satellite signal simulation module (4) respectively, and the test analysis module (5) is connected with the phased array antenna beam test module (3) and the low-orbit satellite signal simulation module (4) respectively:
the transmitting radio frequency performance test module is used for measuring transmitting phase noise, power adjustment range, transmitting spurious and modulating EVM indexes of the user terminal and analyzing transmitting performance of the user terminal;
the receiving radio frequency performance test module is used for measuring receiving phase noise, power adjustment range, receiving spurious and modulation EVM indexes of the user terminal and analyzing receiving performance of the user terminal;
the phased array antenna beam test module is used for measuring the beam width, the beam pointing precision and the beam updating time performance of the user terminal and analyzing the beam tracking performance of the user terminal;
the low-orbit satellite signal simulation module is used for simulating a low-orbit satellite signal, matching with the phased array user terminal, completing the communication performance test under the air feed condition and analyzing the communication performance of the user terminal;
the test analysis module performs meter analysis according to the test results of the transmitting radio frequency performance test module, the receiving radio frequency performance test module, the beam test module and the low orbit satellite signal simulation module, and automatically generates a test report.
In one embodiment, the transmitting radio frequency performance test module comprises: the system comprises a signal source, a direct current power supply, a duplexer, a user terminal, a test control box, a 10Mhz constant temperature crystal oscillator and a frequency spectrograph; the signal source is connected with the duplexer, and the direct current power supply is connected with the user terminal; one end of the user terminal is connected with the duplexer and is used for receiving the intermediate frequency signal and the reference signal, and the other end of the user terminal is connected with the test control box and is used for receiving the control of the test control box; the 10Mhz constant temperature crystal oscillator is connected with the duplexer and used for transmitting reference signals to the duplexer, and the spectrometer is connected with the user terminal and used for receiving radio frequency signals transmitted by the user terminal.
In one embodiment, the receiving radio frequency performance test module includes: the system comprises a signal source, a direct current power supply, a duplexer, a user terminal, a test control box, a 10Mhz constant temperature crystal oscillator and a frequency spectrograph;
the user terminal is respectively connected with the signal source, the duplexer and the test control box, the duplexer is connected with the direct current power supply, and the duplexer is respectively connected with the 10Mhz constant temperature crystal oscillator and the frequency spectrograph.
In one embodiment, the transmitting radio frequency performance test module is specifically configured to:
measuring indexes such as transmitting phase noise, power adjustment range, transmitting spurious, modulating EVM and the like of the user terminal;
the transmitting radio frequency performance is determined by an up-conversion power amplifier and a phased array transmitting array surface;
the transmitting radio frequency performance testing module is also used for testing the radio frequency performance of the whole transmitting channel comprising the up-conversion power amplifier and the phased array transmitting array surface.
In one embodiment, the receiving radio frequency performance testing module is specifically configured to:
measuring the receiving phase noise, the power adjusting range, the receiving spurious and modulation EVM index of the user terminal;
the receiving radio frequency performance is determined by the phased array receiving array surface and the down converter.
The receiving radio frequency performance test module is also used for testing the radio frequency performance of the whole receiving channel comprising the phased array receiving array surface and the down converter.
In one embodiment, the phased array antenna beam testing module is specifically configured to:
measuring beam width, beam pointing accuracy and beam updating time parameters of the user terminal;
the beam width is the width corresponding to the beam of the user terminal when the beam descends 3dB from the highest point;
the beam pointing precision is the difference between the actual pointing angle and the theoretical pointing angle of the user terminal;
the beam update time is the time required for a user terminal to change from one pointing angle to another.
In one embodiment, the beam pointing accuracy test is divided into a static beam pointing accuracy test and a dynamic beam pointing accuracy test.
In one embodiment, in the dynamic beam pointing accuracy test, the user terminal is placed on the simulated swing platform, and the dynamic beam pointing performance of the user terminal is tested by setting corresponding carrier motion simulation conditions.
The method for testing the key performance of the whole low-rail phased array user terminal is characterized by comprising the following steps of:
the method comprises the steps that a transmitting radio frequency performance testing module is used for testing the radio frequency performance of the whole transmitting channel comprising an up-conversion power amplifier and a phased array transmitting array surface;
testing the radio frequency performance of the whole receiving channel comprising the phased array receiving array surface and the down converter by a receiving radio frequency performance testing module;
measuring the beam width, the beam pointing precision and the beam updating time parameters of the user terminal through a beam testing module;
simulating different low-orbit satellite signals and phased array user terminals through a low-orbit satellite signal simulation module;
and according to the radio frequency performance test result of the whole transmitting channel, the radio frequency performance of the whole receiving channel, the beam width, the beam pointing precision and the beam updating time parameter of the user terminal, completing the communication performance test under the air feed condition.
In one embodiment, the method further includes, after completing the communication performance test under the air feed condition, according to the radio frequency performance test result of the whole transmitting channel, the radio frequency performance of the whole receiving channel, and the beam width, the beam pointing precision and the beam updating time parameter of the user terminal:
and analyzing the communication performance of the user terminal according to the communication performance test under the air feed condition.
By the testing device and the testing method, the coverage and the key index testing time of the index testing are balanced, the screening test of the key index of the low-orbit phased array user terminal can be effectively improved, the quick bottoming of the performance of the user terminal is realized, and the success rate of the subsequent access satellite testing of the user terminal is improved.
Drawings
FIG. 1 is a schematic diagram of a low-rail phased array user terminal overall critical performance testing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a connection relationship of a transmitting RF performance test module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection relationship of a receiving RF performance test module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a phased array antenna beam test module connection according to an embodiment of the invention.
Detailed Description
The following detailed description of the embodiments of the invention, together with the accompanying drawings, will provide further details of the invention, such as specific system configurations, models, technical parameters, etc., which are set forth in the following description, but are not limiting, as they provide a better understanding of the invention. In addition, those skilled in the art will know and understand the content, and the details will not be repeated here.
The utility model provides a low orbit phased array user terminal complete machine key performance testing arrangement, includes emission radio frequency performance test module (1), receives radio frequency performance test module (2), phased array antenna wave beam test module (3), low orbit satellite signal simulation module (4) and test analysis module (5), emission performance test module (1) is connected with receiving radio frequency performance test module (2), receives radio frequency performance test module (2) and is connected with phased array antenna wave beam test module (3) and low orbit satellite signal simulation module (4) respectively, test analysis module (5) are connected with phased array antenna wave beam test module (3) and low orbit satellite signal simulation module (4) respectively, wherein:
the transmitting radio frequency performance test module is used for measuring transmitting phase noise, power adjustment range, transmitting spurious and modulating EVM indexes of the user terminal and analyzing transmitting performance of the user terminal;
the receiving radio frequency performance test module is used for measuring receiving phase noise, power adjustment range, receiving spurious and modulation EVM indexes of the user terminal and analyzing receiving performance of the user terminal;
the phased array antenna beam test module is used for measuring the beam width, the beam pointing precision and the beam updating time performance of the user terminal and analyzing the beam tracking performance of the user terminal;
the low-orbit satellite signal simulation module is used for simulating a low-orbit satellite signal, matching with the phased array user terminal, completing the communication performance test under the air feed condition and analyzing the communication performance of the user terminal;
the test analysis module performs meter analysis according to the test results of the transmitting radio frequency performance test module, the receiving radio frequency performance test module, the beam test module and the low orbit satellite signal simulation module, and automatically generates a test report.
In one embodiment, referring to fig. 2, the transmitting radio frequency performance test module includes: the system comprises a signal source, a direct current power supply, a duplexer, a user terminal, a test control box, a 10Mhz constant temperature crystal oscillator and a frequency spectrograph; the signal source is connected with the duplexer, and the direct current power supply is connected with the user terminal; one end of the user terminal is connected with the duplexer and is used for receiving the intermediate frequency signal and the reference signal, and the other end of the user terminal is connected with the test control box and is used for receiving the control of the test control box; the 10Mhz constant temperature crystal oscillator is connected with the duplexer and used for transmitting reference signals to the duplexer, and the spectrometer is connected with the user terminal and used for receiving radio frequency signals transmitted by the user terminal.
In one embodiment, referring to fig. 3, the receiving radio frequency performance test module includes: the system comprises a signal source, a direct current power supply, a duplexer, a user terminal, a test control box, a 10Mhz constant temperature crystal oscillator and a frequency spectrograph;
the user terminal is respectively connected with the signal source, the duplexer and the test control box, the duplexer is connected with the direct current power supply, and the duplexer is respectively connected with the 10Mhz constant temperature crystal oscillator and the frequency spectrograph.
In one embodiment, the transmitting radio frequency performance test module is specifically configured to:
measuring indexes such as transmitting phase noise, power adjustment range, transmitting spurious, modulating EVM and the like of the user terminal;
the transmitting radio frequency performance is determined by an up-conversion power amplifier and a phased array transmitting array surface;
the transmitting radio frequency performance testing module is also used for testing the radio frequency performance of the whole transmitting channel comprising the up-conversion power amplifier and the phased array transmitting array surface.
In one embodiment, the receiving radio frequency performance testing module is specifically configured to:
measuring the receiving phase noise, the power adjusting range, the receiving spurious and modulation EVM index of the user terminal;
the receiving radio frequency performance is determined by the phased array receiving array surface and the down converter.
The receiving radio frequency performance test module is also used for testing the radio frequency performance of the whole receiving channel comprising the phased array receiving array surface and the down converter.
In one embodiment, the phased array antenna beam testing module is specifically configured to:
measuring beam width, beam pointing accuracy and beam updating time parameters of the user terminal;
the beam width is the width corresponding to the beam of the user terminal when the beam descends 3dB from the highest point;
the beam pointing precision is the difference between the actual pointing angle and the theoretical pointing angle of the user terminal;
the beam update time is the time required for a user terminal to change from one pointing angle to another.
In one embodiment, the beam pointing accuracy test is divided into a static beam pointing accuracy test and a dynamic beam pointing accuracy test.
In one embodiment, in the dynamic beam pointing accuracy test, the user terminal is placed on the simulated swing platform, and the dynamic beam pointing performance of the user terminal is tested by setting corresponding carrier motion simulation conditions.
In one embodiment, the method is applied to the device of any one of claims 1 to 6, the method comprising:
the method comprises the steps that a transmitting radio frequency performance testing module is used for testing the radio frequency performance of the whole transmitting channel comprising an up-conversion power amplifier and a phased array transmitting array surface;
testing the radio frequency performance of the whole receiving channel comprising the phased array receiving array surface and the down converter by a receiving radio frequency performance testing module;
measuring the beam width, the beam pointing precision and the beam updating time parameters of the user terminal through a beam testing module;
simulating different low-orbit satellite signals and phased array user terminals through a low-orbit satellite signal simulation module;
and according to the radio frequency performance test result of the whole transmitting channel, the radio frequency performance of the whole receiving channel, the beam width, the beam pointing precision and the beam updating time parameter of the user terminal, completing the communication performance test under the air feed condition.
In one embodiment, the method further includes, after completing the communication performance test under the air feed condition, according to the radio frequency performance test result of the whole transmitting channel, the radio frequency performance of the whole receiving channel, and the beam width, the beam pointing precision and the beam updating time parameter of the user terminal:
and analyzing the communication performance of the user terminal according to the communication performance test under the air feed condition.
Specifically, the communication performance analysis of the user terminal comprises a maximum communication rate, which is generally more than or equal to 100Mbps; the network access time is generally less than or equal to 60s; the communication delay is typically 45ms or less.
A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of the above embodiments.
A computer device comprising a memory storing a computer program and a processor implementing steps of a method according to any of the above embodiments when the computer program is executed.
In order to realize the complete machine key performance test of the low-rail phased array user terminal, the invention provides a complete machine key performance test device of the low-rail phased array user terminal, which comprises: the system comprises a transmitting radio frequency performance testing module, a receiving radio frequency performance testing module, a phased array antenna beam testing module, a low-orbit satellite signal simulation module and a testing analysis module. In specific implementation, the transmitting radio frequency performance test module is used for measuring indexes such as transmitting phase noise, power adjustment range, transmitting spurious, modulating EVM and the like of the user terminal and analyzing transmitting performance of the user terminal; the receiving radio frequency performance test module is used for measuring indexes such as receiving phase noise, power adjustment range, receiving spurious, modulation EVM and the like of the user terminal and analyzing the receiving performance of the user terminal; the phased array antenna beam test module is used for measuring the beam width, the beam pointing precision, the beam updating time and other performances of the user terminal and analyzing the beam tracking performance of the user terminal; the low-orbit satellite signal simulation module is used for simulating a low-orbit satellite signal, matching with the phased array user terminal, completing the communication performance test under the air feed condition and analyzing the communication performance of the user terminal; the test analysis module performs meter analysis according to the test results of the transmitting radio frequency performance test module, the receiving radio frequency performance test module, the beam test module and the low orbit satellite signal simulation module, and automatically generates a test report.
Based on the above description, the embodiment of the present invention provides a device for testing the overall key performance of a low-rail phased array user terminal, as shown in fig. 1, including:
the system comprises a transmitting radio frequency performance testing module, a receiving radio frequency performance testing module, a phased array antenna beam testing module, a low-orbit satellite signal simulation module and a testing analysis module. The transmitting radio frequency performance testing module is connected with the receiving radio frequency performance testing module, the receiving performance testing module is connected with the phased array antenna beam testing module and the low-orbit satellite signal simulation module, and the testing analysis module is connected with the phased array antenna beam testing module and the low-orbit satellite signal simulation module.
In one embodiment, the connection relationship between the transmitting radio frequency performance test module and the user terminal is shown in fig. 2. The signal source is connected with the duplexer, the 10MHz clock crystal oscillator is connected with the duplexer, the duplexer is connected with the user terminal, the direct current power supply is connected with the user terminal, the test control box is connected with the user terminal, and the user terminal is connected with the spectrometer. The module can be used for testing indexes such as emission straying, modulation EVM and the like of the user terminal in detail.
In one embodiment, the connection relationship between the receiving radio frequency performance test module and the user terminal is shown in fig. 3. The signal source is connected with the user terminal, the frequency spectrograph is connected with the duplexer, the 10MHz clock crystal oscillator is connected with the duplexer, the duplexer is connected with the user terminal, the direct current power supply is connected with the user terminal, and the test control box is connected with the user terminal.
In one embodiment, the connection relationship between the phased array antenna beam test module and the user terminal is shown in fig. 4. The phased array antenna beam testing module is connected with the user terminal, the movable platform is connected with the phased array antenna beam testing module, the phased array antenna beam testing module is connected with the low-orbit satellite signal simulation module, and the testing result analysis module is connected with the phased array antenna beam testing module.
In one embodiment, the low-orbit satellite signal simulation module can simulate low-orbit satellite signals of different orbits and different systems. The low orbit satellite signals comprise different signal types such as single tone signals, basic modulation signals, DVB system signals, 5G-like signals and the like.
In summary, the implementation of the invention is realized by constructing a low-rail phased array user terminal complete machine key performance testing device, which comprises: the system comprises a transmitting radio frequency performance testing module, a receiving radio frequency performance testing module, a phased array antenna beam testing module, a low-orbit satellite signal simulation module and a testing analysis module. The transmitting radio frequency performance test module is used for measuring indexes such as transmitting phase noise, power adjustment range, transmitting spurious, modulating EVM and the like of the user terminal and analyzing the transmitting performance of the user terminal; the receiving radio frequency performance test module is used for measuring indexes such as receiving phase noise, power adjustment range, receiving spurious, modulation EVM and the like of the user terminal and analyzing the receiving performance of the user terminal; the phased array antenna beam test module is used for measuring the beam width, the beam pointing precision, the beam updating time and other performances of the user terminal and analyzing the beam tracking performance of the user terminal; the low-orbit satellite signal simulation module is used for simulating a low-orbit satellite signal, matching with the phased array user terminal, completing the communication performance test under the air feed condition and analyzing the communication performance of the user terminal; the test analysis module performs meter analysis according to the test results of the transmitting radio frequency performance test module, the receiving radio frequency performance test module, the beam test module and the low orbit satellite signal simulation module, and automatically generates a test report.
By the testing device and the testing method, the coverage and the key index testing time of the index testing are balanced, the screening test of the key index of the low-orbit phased array user terminal can be effectively improved, the quick bottoming of the performance of the user terminal is realized, and the success rate of the subsequent access satellite testing of the user terminal is improved.
The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.

Claims (10)

1. The device is characterized by comprising a transmitting radio frequency performance test module (1), a receiving radio frequency performance test module (2), a phased array antenna beam test module (3), a low-orbit satellite signal simulation module (4) and a test analysis module (5); the system comprises a phased array antenna beam test module (3), a low-orbit satellite signal simulation module (4), a transmitting performance test module (1), a receiving radio frequency performance test module (2), a test analysis module (5), a phased array antenna beam test module (3) and a low-orbit satellite signal simulation module (4), wherein the transmitting performance test module (1) is connected with the receiving radio frequency performance test module (2), the receiving radio frequency performance test module (2) is connected with the phased array antenna beam test module (3) and the low-orbit satellite signal simulation module (4) respectively, and the test analysis module (5) is connected with the phased array antenna beam test module (3) and the low-orbit satellite signal simulation module (4) respectively:
the transmitting radio frequency performance test module is used for measuring transmitting phase noise, power adjustment range, transmitting spurious and modulating EVM indexes of the user terminal and analyzing transmitting performance of the user terminal;
the receiving radio frequency performance test module is used for measuring receiving phase noise, power adjustment range, receiving spurious and modulation EVM indexes of the user terminal and analyzing receiving performance of the user terminal;
the phased array antenna beam test module is used for measuring the beam width, the beam pointing precision and the beam updating time performance of the user terminal and analyzing the beam tracking performance of the user terminal;
the low-orbit satellite signal simulation module is used for simulating a low-orbit satellite signal, matching with the phased array user terminal, completing the communication performance test under the air feed condition and analyzing the communication performance of the user terminal;
the test analysis module performs meter analysis according to the test results of the transmitting radio frequency performance test module, the receiving radio frequency performance test module, the beam test module and the low orbit satellite signal simulation module, and automatically generates a test report.
2. The apparatus of claim 1, wherein the transmit radio frequency performance test module comprises: the system comprises a signal source, a direct current power supply, a duplexer, a user terminal, a test control box, a 10Mhz constant temperature crystal oscillator and a frequency spectrograph; the signal source is connected with the duplexer, and the direct current power supply is connected with the user terminal; one end of the user terminal is connected with the duplexer and is used for receiving the intermediate frequency signal and the reference signal, and the other end of the user terminal is connected with the test control box and is used for receiving the control of the test control box; the 10Mhz constant temperature crystal oscillator is connected with the duplexer and used for transmitting reference signals to the duplexer, and the spectrometer is connected with the user terminal and used for receiving radio frequency signals transmitted by the user terminal.
3. The apparatus of claim 1, wherein the receive radio frequency performance test module comprises: the system comprises a signal source, a direct current power supply, a duplexer, a user terminal, a test control box, a 10Mhz constant temperature crystal oscillator and a frequency spectrograph;
the user terminal is respectively connected with the signal source, the duplexer and the test control box, the duplexer is connected with the direct current power supply, and the duplexer is respectively connected with the 10Mhz constant temperature crystal oscillator and the frequency spectrograph.
4. The apparatus of claim 1, wherein the transmitting radio frequency performance test module is specifically configured to:
measuring indexes such as transmitting phase noise, power adjustment range, transmitting spurious, modulating EVM and the like of the user terminal;
the transmitting radio frequency performance is determined by an up-conversion power amplifier and a phased array transmitting array surface;
the transmitting radio frequency performance testing module is also used for testing the radio frequency performance of the whole transmitting channel comprising the up-conversion power amplifier and the phased array transmitting array surface.
5. The apparatus of claim 4, wherein the receiving radio frequency performance test module is specifically configured to:
measuring the receiving phase noise, the power adjusting range, the receiving spurious and modulation EVM index of the user terminal;
the receiving radio frequency performance is determined by the phased array receiving array surface and the down converter.
The receiving radio frequency performance test module is also used for testing the radio frequency performance of the whole receiving channel comprising the phased array receiving array surface and the down converter.
6. The apparatus of claim 5, wherein the phased array antenna beam testing module is specifically configured to:
measuring beam width, beam pointing accuracy and beam updating time parameters of the user terminal;
the beam width is the width corresponding to the beam of the user terminal when the beam descends 3dB from the highest point;
the beam pointing precision is the difference between the actual pointing angle and the theoretical pointing angle of the user terminal;
the beam update time is the time required for a user terminal to change from one pointing angle to another.
7. The apparatus of claim 6, wherein the beam pointing accuracy test is divided into a static beam pointing accuracy test and a dynamic beam pointing accuracy test.
8. The apparatus of claim 7, wherein in the dynamic beam pointing accuracy test, the user terminal is placed on a simulated swing platform, and the dynamic beam pointing performance of the user terminal is tested by setting corresponding carrier motion simulation conditions.
9. A method for testing the overall key performance of a low-rail phased array user terminal, which is characterized in that the method is applied to the device of any one of claims 1 to 8, and the method comprises the following steps:
the method comprises the steps that a transmitting radio frequency performance testing module is used for testing the radio frequency performance of the whole transmitting channel comprising an up-conversion power amplifier and a phased array transmitting array surface;
testing the radio frequency performance of the whole receiving channel comprising the phased array receiving array surface and the down converter by a receiving radio frequency performance testing module;
measuring the beam width, the beam pointing precision and the beam updating time parameters of the user terminal through a beam testing module;
simulating different low-orbit satellite signals and phased array user terminals through a low-orbit satellite signal simulation module;
and according to the radio frequency performance test result of the whole transmitting channel, the radio frequency performance of the whole receiving channel, the beam width, the beam pointing precision and the beam updating time parameter of the user terminal, completing the communication performance test under the air feed condition.
10. The method of claim 7, wherein the completing the communication performance test under the air feed condition further comprises:
and analyzing the communication performance of the user terminal according to the communication performance test under the air feed condition.
CN202211491084.4A 2022-11-25 2022-11-25 Device and method for testing overall key performance of low-rail phased array user terminal Pending CN116155405A (en)

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Application Number Priority Date Filing Date Title
CN202211491084.4A CN116155405A (en) 2022-11-25 2022-11-25 Device and method for testing overall key performance of low-rail phased array user terminal

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CN116155405A true CN116155405A (en) 2023-05-23

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