CN112118150B - Satellite internet-based on-orbit testing method and system - Google Patents
Satellite internet-based on-orbit testing method and system Download PDFInfo
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- CN112118150B CN112118150B CN202010841894.2A CN202010841894A CN112118150B CN 112118150 B CN112118150 B CN 112118150B CN 202010841894 A CN202010841894 A CN 202010841894A CN 112118150 B CN112118150 B CN 112118150B
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R23/16—Spectrum analysis; Fourier analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/03—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
- G01S19/10—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals
- G01S19/12—Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers providing dedicated supplementary positioning signals wherein the cooperating elements are telecommunication base stations
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- G—PHYSICS
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/45—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement
- G01S19/46—Determining position by combining measurements of signals from the satellite radio beacon positioning system with a supplementary measurement the supplementary measurement being of a radio-wave signal type
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
The application provides an on-orbit testing method and system based on satellite internet, wherein the method comprises the following steps: the test platform generates a satellite internet system gateway station side signal and sends the satellite internet system gateway station side signal to the signal source; the signal source modulates the side signal of the gateway station of the satellite internet system to the working frequency band of the intermediate frequency interface of the gateway station; and input to the intermediate frequency interface of the said gateway station through the radio frequency cable; the gateway station transmits a satellite internet system gateway station side signal received through the intermediate frequency interface to the terminal through a satellite; the terminal modulates the signal received from the satellite to the frequency band of the working intermediate frequency interface; the method comprises the following steps that a spectrum analyzer collects signals from an intermediate frequency interface of a terminal and outputs the collected signals to a test platform; and the test platform analyzes the signal output by the frequency spectrograph through a set terminal demodulation algorithm. The method can save time and reduce cost when in-orbit testing is realized.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an on-orbit testing method and system based on satellite internet.
Background
The satellite internet is a novel communication network combining satellite communication and the internet, and is a network infrastructure for providing internet access services for various users on land, on the sea, in the air and the like by utilizing high, medium and low orbit satellites.
In 20 days 4 months in 2020, the development and improvement committee formally announces that the satellite internet is brought into a novel infrastructure, and the satellite internet is expected to become a third-generation internet infrastructure revolution following wired interconnection and wireless interconnection. By means of a low-orbit satellite constellation system and laying of a satellite network in outer space, ground users can enjoy wide-area continuous ubiquitous access services which are not limited by terrain and regions.
At present, the satellite internet shows a rapid development trend. More than 6 countries around the world release a total of more than 28 satellite internet system construction projects, with the number of planned launching satellites exceeding 5 million. There are a number of satellite internet systems that enter the launch or operational phase.
In China, the satellite internet construction also enters the starting stage. But related participants in the field have different understandings on network architecture, technical systems, functions, platforms, services, evaluation and the like. Therefore, research and verification of a satellite internet system are urgently needed to be carried out, a satellite internet technical system is standardized, and construction and implementation of a commercial system are promoted.
Unlike terrestrial communications 2G, 3G, 4G, 5G, satellite internet terminals rely on airborne satellites for signal retransmission in communication with gateway stations. The satellite system receives, amplifies and converts the signals transmitted from the ground and forwards the signals back to the ground.
At present, the satellite internet takes a low earth orbit satellite (LEO) constellation as a mainstream, and the typical height is 500-2000 km. The satellite communication environment and the ground communication environment have great difference in time delay, Doppler shift, large-scale fading, small-scale fading and the like, so that the communication system is required to be adaptively designed according to the characteristics of the satellite internet communication environment. Meanwhile, when the key technology verification is carried out, the influence of the characteristics of the channel on the test result is fully reflected. The on-track test is a very intuitive test method.
Because the modulation and demodulation modules of the terminal and the gateway station do not meet the technical requirements of satellite internet, how to realize the on-orbit test is a technical problem which needs to be solved urgently.
Disclosure of Invention
In view of this, the present application provides an in-orbit testing method and system based on a satellite internet, which can save time and reduce cost when implementing in-orbit testing.
In order to solve the technical problem, the technical scheme of the application is realized as follows:
in one embodiment, an on-orbit testing method based on satellite internet is provided, which is characterized in that a signal source is deployed on a gateway side, a spectrum analyzer is deployed on a terminal side, and a testing platform connected with the signal source and the spectrum analyzer is deployed; the method comprises the following steps:
the test platform generates satellite internet system gateway station side signals and sends the signals to the signal source;
the signal source modulates the side signal of the gateway station of the satellite internet system to the working frequency band of the intermediate frequency interface of the gateway station; and input to the intermediate frequency interface of the said gateway station through the radio frequency cable;
the gateway station sends a satellite internet system gateway station side signal received by an intermediate frequency interface to the terminal through a satellite;
the terminal modulates the signal received from the satellite to a frequency band in which an intermediate frequency interface works;
the spectrum analyzer collects signals from an intermediate frequency interface of the terminal and outputs the collected signals to the test platform;
and the test platform analyzes the signal output by the frequency spectrograph through a set terminal demodulation algorithm.
In another embodiment, an on-orbit testing method based on satellite internet is provided, a signal source is deployed on a terminal side, a spectrum analyzer is deployed on a gateway station side, and a testing platform connected with the signal source and the spectrum analyzer is deployed; the method comprises the following steps:
the test platform generates a satellite internet system terminal side signal and sends the satellite internet system terminal side signal to the signal source;
the signal source modulates the signals at the terminal side of the satellite internet system to the working frequency band of the intermediate frequency interface of the terminal; the signals are input to an intermediate frequency interface of the terminal through a radio frequency cable;
the terminal sends a terminal side signal of a satellite internet system received by the intermediate frequency interface to the gateway station through a satellite;
the gateway station modulates the signals received from the satellite to a frequency band in which an intermediate frequency interface works;
the spectrum analyzer collects signals from an intermediate frequency interface of the gateway station and outputs the collected signals to the test platform;
and the test platform analyzes the signal output by the frequency spectrograph through a set gateway station demodulation algorithm.
In another embodiment, there is provided a satellite internet based in-orbit testing system, the system comprising: the system comprises a test platform, a signal source, a gateway station, a terminal and a spectrum analyzer;
the test platform is used for generating satellite internet system gateway station side signals and sending the signals to the signal source; when a signal output by the spectrum analyzer is received, analyzing the signal through a set terminal demodulation algorithm;
the signal source is used for modulating the satellite internet system gateway station side signal to the frequency band of the intermediate frequency interface work of the gateway station when receiving the satellite internet system gateway station side signal sent by the test platform; and input to the intermediate frequency interface of the said gateway station through the radio frequency cable;
the gateway station is used for sending a satellite internet system gateway station side signal received by the intermediate frequency interface to the terminal through a satellite;
the terminal is used for modulating the signal received from the satellite to a frequency band in which an intermediate frequency interface works;
and the spectrum analyzer is used for acquiring signals from an intermediate frequency interface of the terminal and outputting the acquired signals to the test platform.
In another embodiment, an in-orbit testing system based on satellite internet is provided, which is characterized by comprising: the system comprises a test platform, a signal source, a terminal, a gateway station and a spectrum analyzer;
the test platform is used for generating a satellite internet system terminal side signal and sending the satellite internet system terminal side signal to the signal source; when a signal output by the spectrum analyzer is received, analyzing the signal through a set gateway station demodulation algorithm;
the signal source is used for modulating the satellite internet system terminal side signal to a frequency band of the terminal intermediate frequency interface working when receiving the satellite internet system terminal side signal sent by the test platform; the signals are input to an intermediate frequency interface of the terminal through a radio frequency cable;
the terminal is used for sending the terminal side signal of the satellite internet system received by the intermediate frequency interface to the gateway station through a satellite;
the gateway station is used for modulating the signals received from the satellite to the frequency band of the intermediate frequency interface;
and the spectrum analyzer is used for acquiring signals from an intermediate frequency interface of the gateway station and outputting the acquired signals to the test platform.
According to the technical scheme, the existing satellite system is used in the embodiment, the testing instrument, the signal source and the testing platform are used in a matched mode to perform the on-orbit testing based on the satellite internet, the time can be saved when the on-orbit testing is achieved, the cost is reduced, and the rapid development of the satellite internet technology is further promoted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Figure 1 is a functional block diagram of a gateway station;
FIG. 2 is a diagram illustrating an in-orbit testing system based on satellite Internet according to an embodiment;
FIG. 3 is a schematic diagram illustrating an in-orbit test based on satellite Internet according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an in-orbit testing system based on the satellite Internet according to the second embodiment of the present application;
fig. 5 is a schematic diagram of an in-orbit test process based on the satellite internet according to a second embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail with specific examples. Several of the following embodiments may be combined with each other and some details of the same or similar concepts or processes may not be repeated in some embodiments.
At present, some satellites and ground systems thereof for communication are available in China. The satellite is a transparent forwarding system as in the satellite internet system, and in the system, the satellite is only used for forwarding and amplifying signals and does not perform on-satellite processing. Therefore, the tests performed with the existing satellite system depend mainly on whether the terminal and the gateway station equipment support.
Most of the existing satellite communication systems adopt DVB or similar technologies, which are far from the system technology adopted by satellite Internet and can not be directly used for technical verification. By disassembling the existing gateway station and terminal functional modules, it can be known that the main functional modules of the gateway station and the terminal can be disassembled into three modules of modulation and demodulation, radio frequency and antenna.
Referring to fig. 1, fig. 1 is a functional block diagram of a gateway station.
In fig. 1:
a modulation and demodulation module: the method is used for finishing signal processing and transmission, and mainly comprises uplink and downlink frequency conversion, AD/DA conversion, physical layer signal processing, high-level protocol stack processing and the like. The method has communication system realization capability, including waveform, multiple access, frame structure, modulation mode, coding and decoding and the like; the device has the capability of uplink and downlink intermediate frequency processing;
a radio frequency module: the signal is up-down converted and amplified. And in a transmitting link, carrying out up-conversion and amplification on the signals sent by the modulation and demodulation module. In the receiving chain, the signal received by the antenna is amplified and down-converted to the intermediate frequency received by the modulation and demodulation module.
An antenna: and (4) receiving and transmitting signals. The transmitting link transmits the signal generated by the radio frequency module and sends the signal to the satellite through the space link; the receiving link receives the satellite signal and transmits the satellite signal to the radio frequency module.
Therefore, the modulation and demodulation module is a core unit for signal processing and is also a key module for satellite internet system verification. The radio frequency module and the antenna module only transmit signals and do not change the system of the signals.
The structure and function of the terminal are similar to those of the gateway station in fig. 1 and will not be described in detail here.
Because the test instrument, such as a spectrum analyzer, cannot perform a bidirectional transceiving function, in the embodiment of the present application, the deployment and verification of the test system are performed on the uplink and the downlink respectively.
In a communication system, the uplink refers to the gateway station to terminal link and the downlink refers to the terminal to gateway station link.
Aiming at a downlink, a mode of combining a test platform and a signal source is used for replacing the signal generation function of a modulation and demodulation module of a gateway station and is used for generating a gateway station side signal based on a satellite internet system; the test platform is combined with the spectrum analyzer to replace the signal demodulation function of a modulation and demodulation module of the terminal and is used for demodulating satellite internet system signals.
Aiming at an uplink, a mode of combining a test platform and a signal source is used for replacing the signal generation function of a modulation and demodulation module of the terminal and generating a terminal side signal based on a satellite internet system; the test platform is combined with a spectrum analyzer to replace the signal demodulation function of a modulation and demodulation module of a gateway station and is used for demodulating signals of a satellite internet system.
The test platform has a baseband signal generating, receiving and demodulating function of a satellite internet signal system standard, and can provide a signal transmission simulation function corresponding to Physical channels such as a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel (PUCCH). Meanwhile, in the demodulation function of the platform, the compensation function of the satellite internet for channel characteristics such as Doppler and time delay and the compensation function for characteristics such as phase noise, group delay and in-band flatness are realized. The rationality of system design is verified through testing the key technologies of the satellite internet.
The following describes in detail an in-orbit testing process implemented based on the satellite internet in the embodiment of the present application with reference to the drawings.
Example one
The embodiment performs on-orbit test on the downlink key technology based on the satellite internet. A signal source is deployed on the gateway station side, a spectrum analyzer is deployed on the terminal side, and a test platform connected with the signal source and the spectrum analyzer is deployed.
The test platform can be connected with the signal source and the spectrum analyzer in a wired or wireless way; the signal source is connected with the gateway station through a radio frequency cable; the spectrum analyzer is connected with the terminal through a radio frequency cable; in specific implementation, the gateway station and the terminal may be the gateway station and the terminal in practical application, or may be the gateway station and the terminal simulated for testing.
Referring to fig. 2, fig. 2 is an on-orbit testing system based on a satellite internet according to a first embodiment. The test system comprises: the system comprises a test platform, a signal source, a gateway station, a terminal and a spectrum analyzer;
the test platform is used for generating satellite internet system gateway station side signals and sending the signals to the signal source; when a signal output by the spectrum analyzer is received, analyzing the signal through a set terminal demodulation algorithm;
wherein, the satellite internet system gateway station side signal is:
signals transmitted on the PDCCH, or signals transmitted on the PDSCH.
The test platform can be a server, a PC and the like.
The signal source is used for modulating the satellite internet system gateway station side signal to the frequency band of the intermediate frequency interface work of the gateway station when receiving the satellite internet system gateway station side signal sent by the test platform; and input to the intermediate frequency interface of the said gateway station through the radio frequency cable;
the gateway station is used for sending a satellite internet system gateway station side signal received by the intermediate frequency interface to the terminal through a satellite;
the terminal is used for modulating the signal received from the satellite to a frequency band in which an intermediate frequency interface works;
and the spectrum analyzer is used for acquiring signals from an intermediate frequency interface of the terminal and outputting the acquired signals to the test platform.
The gateway station in fig. 2 uses radio frequency (module) and antenna to perform on-track test, and does not use the modem module included therein, and the modem module is not shown in fig. 2.
The gateway station is specifically configured to send a satellite internet system gateway station side signal received through an intermediate frequency interface to the terminal through a satellite, and includes: and modulating the frequency of the satellite internet system gateway station side signal to the working frequency of an antenna, and transmitting the satellite side signal to the satellite through the antenna of the gateway station.
The terminal in fig. 2 uses radio frequency (module) and antenna to complete on-track test, and does not use the modem module included therein, and the modem module is not shown in fig. 2.
The terminal, which is specifically configured to modulate a signal received from the satellite to a frequency band in which an intermediate frequency interface operates, includes:
receiving signals transmitted by satellite via antenna
And modulating the signal to the working frequency band of the intermediate frequency interface of the terminal through a radio frequency (module).
Whether the terminal demodulation algorithm and the communication technology based on the satellite internet are applicable or not is particularly important under various spatial channel conditions introduced by satellite motion or weather conditions (rain, sunny days, strong wind and the like).
The terminal demodulation algorithm for demodulating the received signal can be set according to actual needs, and the embodiment of the present application does not limit this, such as a code modulation strategy, uplink synchronization and timing advance, random access performance, and the like.
Referring to fig. 3, fig. 3 is a schematic diagram of an in-orbit test process based on a satellite internet according to an embodiment of the present application. The method comprises the following specific steps:
The satellite internet system gateway station side signals are as follows:
signals transmitted on the PDCCH, or signals transmitted on the PDSCH.
In step 304, the terminal modulates the signal received from the satellite to a frequency band in which the intermediate frequency interface operates.
And 305, the spectrum analyzer collects signals from the intermediate frequency interface of the terminal and outputs the collected signals to the test platform.
And 306, analyzing the signal output by the frequency spectrograph by the testing platform through a set terminal demodulation algorithm.
In the embodiment of the application, the existing satellite system is utilized, and the test instrument, the signal source and the test platform are cooperatively used for performing the in-orbit test based on the satellite internet, so that the time can be saved and the cost can be reduced when the in-orbit test is realized, and further the rapid development of the satellite internet technology is promoted.
Example two
The embodiment performs on-orbit test on the satellite internet-based uplink key technology. A signal source is deployed on the side of a terminal, a spectrum analyzer is deployed on the side of a gateway station, and a test platform connected with the signal source and the spectrum analyzer is deployed.
The test platform can be connected with the signal source and the spectrum analyzer in a wired or wireless way; the signal source and the terminal are connected through a radio frequency cable; the spectrum analyzer is connected with the gateway station through a radio frequency cable; in specific implementation, the gateway station and the terminal may be the gateway station and the terminal in practical application, or may be the gateway station and the terminal simulated for testing.
Referring to fig. 4, fig. 4 is a schematic diagram of an in-orbit testing system based on a satellite internet in the second embodiment of the present application. The system comprises: the system comprises a test platform, a signal source, a terminal, a gateway station and a spectrum analyzer;
the test platform is used for generating a satellite internet system terminal side signal and sending the satellite internet system terminal side signal to the signal source; when a signal output by the spectrum analyzer is received, analyzing the signal through a set gateway station demodulation algorithm;
the test platform can be a server, a PC and the like.
The terminal side signal of the satellite internet system is as follows:
signals transmitted on PUCCH, or on PRACH signals.
The signal source is used for modulating the satellite internet system terminal side signal to a frequency band of the terminal intermediate frequency interface working when receiving the satellite internet system terminal side signal sent by the test platform; the signals are input to an intermediate frequency interface of the terminal through a radio frequency cable;
the terminal is used for sending the terminal side signal of the satellite internet system received by the intermediate frequency interface to the gateway station through a satellite;
the gateway station is used for modulating the signals received from the satellite to the frequency band of the intermediate frequency interface;
and the spectrum analyzer is used for acquiring signals from an intermediate frequency interface of the gateway station and outputting the acquired signals to the test platform.
The gateway station in fig. 4 uses radio frequency (module) and antenna to complete on-track test, does not use the modem module contained therein, and does not show the modem module in fig. 4.
The gateway station, which is specifically configured to modulate a signal received from the satellite to a frequency band in which an intermediate frequency interface operates, includes:
receiving signals transmitted by satellite via antenna
The signal is modulated to the frequency band of the intermediate frequency interface of the station by radio frequency (module).
The terminal in fig. 4 uses radio frequency (module) and antenna to complete on-track test, and does not use the modem module included therein, and the modem module is not shown in fig. 4.
The terminal, when being specifically used for sending a satellite internet system terminal side signal received through an intermediate frequency interface to the gateway station through a satellite, includes: and modulating the frequency of the terminal side signal of the satellite internet system to the working frequency of an antenna, and transmitting the signal to the satellite through the antenna of the terminal.
Whether the gateway station demodulation algorithm and the satellite internet-based communication technology are applicable or not is particularly important under various spatial channel conditions introduced by satellite motion or weather conditions (rain, sunny days, strong wind and the like), and the applicability of the gateway station demodulation algorithm and the satellite internet-based communication technology can be verified according to demodulation results in the embodiment of the application.
The set gateway station demodulation algorithm for demodulating the received signal may be set according to actual needs, which is not limited in the embodiments of the present application, such as a downlink initial synchronization performance, an anti-doppler capability, an anti-delay capability, and the like.
Referring to fig. 5, fig. 5 is a schematic diagram of an in-orbit test process based on a satellite internet according to a second embodiment of the present application. The method comprises the following specific steps:
The terminal side signal of the satellite internet system is as follows:
signals transmitted on PUCCH, or on PRACH signals.
In step 504, the gateway station modulates the signal received from the satellite to a frequency band in which the intermediate frequency interface operates.
And 505, the spectrum analyzer collects signals from the intermediate frequency interface of the gateway station and outputs the collected signals to the test platform.
In the embodiment of the application, the existing satellite system is utilized, and the test instrument, the signal source and the test platform are cooperatively used for performing the in-orbit test based on the satellite internet, so that the time can be saved and the cost can be reduced when the in-orbit test is realized, and further the rapid development of the satellite internet technology is promoted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An on-orbit testing method based on satellite internet is characterized in that a signal source is deployed at a gateway station side, a spectrum analyzer is deployed at a terminal side, and a testing platform connected with the signal source and the spectrum analyzer is deployed; the method comprises the following steps:
the test platform generates satellite internet system gateway station side signals and sends the signals to the signal source;
the signal source modulates the side signal of the gateway station of the satellite internet system to the working frequency band of the intermediate frequency interface of the gateway station; and input to the intermediate frequency interface of the said gateway station through the radio frequency cable;
the gateway station sends a satellite internet system gateway station side signal received by an intermediate frequency interface to the terminal through a satellite;
the terminal modulates the signal received from the satellite to a frequency band in which an intermediate frequency interface works;
the spectrum analyzer collects signals from an intermediate frequency interface of the terminal and outputs the collected signals to the test platform;
the test platform analyzes the signal output by the spectrum analyzer through a set terminal demodulation algorithm;
the method comprises the following steps of using a mode of combining a test platform and a signal source to replace a signal generating function of a modulation and demodulation module of a gateway station, and generating a gateway station side signal based on a satellite internet system; the test platform is combined with the spectrum analyzer to replace the signal demodulation function of a modulation and demodulation module of the terminal and is used for demodulating satellite internet system signals; the signal generated by the test platform is a baseband signal with the standard of an internet signal system.
2. The method of claim 1, wherein the satellite internet system gateway station side signal is:
and transmitting signals on a physical downlink shared channel (PDCCH) or transmitting signals on a physical downlink control channel (PDSCH).
3. An on-orbit testing method based on satellite internet is characterized in that a signal source is deployed on a terminal side, a spectrum analyzer is deployed on a gateway station side, and a testing platform connected with the signal source and the spectrum analyzer is deployed; the method comprises the following steps:
the test platform generates a satellite internet system terminal side signal and sends the satellite internet system terminal side signal to the signal source;
the signal source modulates the signals at the terminal side of the satellite internet system to the working frequency band of the intermediate frequency interface of the terminal; the signals are input to an intermediate frequency interface of the terminal through a radio frequency cable;
the terminal sends a terminal side signal of a satellite internet system received by the intermediate frequency interface to the gateway station through a satellite;
the gateway station modulates the signals received from the satellite to a frequency band in which an intermediate frequency interface works;
the spectrum analyzer collects signals from an intermediate frequency interface of the gateway station and outputs the collected signals to the test platform;
the test platform analyzes the signal output by the spectrum analyzer through a set gateway station demodulation algorithm;
the method comprises the steps that a test platform and a signal source are combined to replace a signal generating function of a modulation and demodulation module of a terminal, and the signal generating function is used for generating a terminal side signal based on a satellite internet system; the test platform is combined with a spectrum analyzer, replaces the signal demodulation function of a modulation and demodulation module of a gateway station, and is used for demodulating signals of a satellite internet system; the signal generated by the test platform is a baseband signal with the standard of an internet signal system.
4. The method according to claim 3, wherein the satellite internet system terminal side signals are:
signals transmitted on a physical uplink control channel, PUCCH, or physical random access channel, PRACH, signals.
5. An in-orbit testing system based on satellite internet, characterized in that the system comprises: the system comprises a test platform, a signal source, a gateway station, a terminal and a spectrum analyzer;
the test platform is used for generating satellite internet system gateway station side signals and sending the signals to the signal source; when a signal output by the spectrum analyzer is received, analyzing the signal through a set terminal demodulation algorithm;
the signal source is used for modulating the satellite internet system gateway station side signal to the frequency band of the intermediate frequency interface work of the gateway station when receiving the satellite internet system gateway station side signal sent by the test platform; and input to the intermediate frequency interface of the said gateway station through the radio frequency cable;
the gateway station is used for sending a satellite internet system gateway station side signal received by the intermediate frequency interface to the terminal through a satellite;
the terminal is used for modulating the signal received from the satellite to a frequency band in which an intermediate frequency interface works;
the spectrum analyzer is used for acquiring signals from an intermediate frequency interface of the terminal and outputting the acquired signals to the test platform;
the method comprises the following steps of using a mode of combining a test platform and a signal source to replace a signal generating function of a modulation and demodulation module of a gateway station, and generating a gateway station side signal based on a satellite internet system; the test platform is combined with the spectrum analyzer to replace the signal demodulation function of a modulation and demodulation module of the terminal and is used for demodulating satellite internet system signals; the signal generated by the test platform is a baseband signal with the standard of an internet signal system.
6. The system of claim 5, wherein the satellite internet system gateway station side signal is:
and transmitting signals on a physical downlink shared channel (PDCCH) or transmitting signals on a physical downlink control channel (PDSCH).
7. The system of claim 5 or 6,
the gateway station is specifically configured to send a satellite internet system gateway station side signal received through an intermediate frequency interface to the terminal through a satellite, and includes: and modulating the frequency of the satellite internet system gateway station side signal to the working frequency of an antenna, and transmitting the satellite side signal to the satellite through the antenna of the gateway station.
8. An in-orbit testing system based on satellite internet, characterized in that the system comprises: the system comprises a test platform, a signal source, a terminal, a gateway station and a spectrum analyzer;
the test platform is used for generating a satellite internet system terminal side signal and sending the satellite internet system terminal side signal to the signal source; when a signal output by the spectrum analyzer is received, analyzing the signal through a set gateway station demodulation algorithm;
the signal source is used for modulating the satellite internet system terminal side signal to a frequency band of the terminal intermediate frequency interface working when receiving the satellite internet system terminal side signal sent by the test platform; the signals are input to an intermediate frequency interface of the terminal through a radio frequency cable;
the terminal is used for sending the terminal side signal of the satellite internet system received by the intermediate frequency interface to the gateway station through a satellite;
the gateway station is used for modulating the signals received from the satellite to the frequency band of the intermediate frequency interface;
the spectrum analyzer is used for acquiring signals from an intermediate frequency interface of the gateway station and outputting the acquired signals to the test platform;
the method comprises the steps that a test platform and a signal source are combined to replace a signal generating function of a modulation and demodulation module of a terminal, and the signal generating function is used for generating a terminal side signal based on a satellite internet system; the test platform is combined with a spectrum analyzer, replaces the signal demodulation function of a modulation and demodulation module of a gateway station, and is used for demodulating signals of a satellite internet system; the signal generated by the test platform is a baseband signal with the standard of an internet signal system.
9. The system of claim 8, wherein the satellite internet system terminal side signals are:
signals transmitted on a physical uplink control channel, PUCCH, or physical random access channel, PRACH, signals.
10. The system of claim 8 or 9,
the terminal, when being specifically used for sending a satellite internet system terminal side signal received through an intermediate frequency interface to the gateway station through a satellite, includes: and modulating the frequency of the terminal side signal of the satellite internet system to the working frequency of an antenna, and transmitting the signal to the satellite through the antenna of the terminal.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479255A (en) * | 1978-05-12 | 1984-10-23 | Electronique Marcel Dassault | Apparatus for acquiring and collecting radio signals coming from a plurality of stations |
| CN101064572A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method, test tool and test system for testing sensitivity of terminal receiver |
| CN102386982A (en) * | 2011-10-14 | 2012-03-21 | 中兴通讯股份有限公司 | Metering device and method for radio frequency testing system errors in mobile terminal production |
| CN202183774U (en) * | 2010-12-13 | 2012-04-04 | 中国空间技术研究院 | Distance null detecting system |
| US8750156B1 (en) * | 2013-03-15 | 2014-06-10 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management for identifying open space |
| CN108650033A (en) * | 2018-04-19 | 2018-10-12 | 摩比天线技术（深圳）有限公司 | Test method, test terminal, test system and the storage medium of radio-frequency devices |
| CN108886415A (en) * | 2015-11-27 | 2018-11-23 | 加拿大特尔萨特公司 | Satellite communication subsystem validating in orbit system and method |
| CN109861737A (en) * | 2017-11-30 | 2019-06-07 | 电视广播有限公司 | Automatic satellite telemetering, tracking and command system |
| CN110138442A (en) * | 2019-05-23 | 2019-08-16 | 上海微小卫星工程中心 | Floor synthetic test macro and method for satellite data transmission |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338086B (en) * | 2013-07-10 | 2015-02-11 | 航天恒星科技有限公司 | Testing system for radio frequency consistency of satellite mobile communication terminal and testing method of testing system |
| WO2015062104A1 (en) * | 2013-11-04 | 2015-05-07 | 国家电网公司 | Smart power utilization communications product testing system |
-
2020
- 2020-08-20 CN CN202010841894.2A patent/CN112118150B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479255A (en) * | 1978-05-12 | 1984-10-23 | Electronique Marcel Dassault | Apparatus for acquiring and collecting radio signals coming from a plurality of stations |
| CN101064572A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method, test tool and test system for testing sensitivity of terminal receiver |
| CN202183774U (en) * | 2010-12-13 | 2012-04-04 | 中国空间技术研究院 | Distance null detecting system |
| CN102386982A (en) * | 2011-10-14 | 2012-03-21 | 中兴通讯股份有限公司 | Metering device and method for radio frequency testing system errors in mobile terminal production |
| US8750156B1 (en) * | 2013-03-15 | 2014-06-10 | DGS Global Systems, Inc. | Systems, methods, and devices for electronic spectrum management for identifying open space |
| CN108886415A (en) * | 2015-11-27 | 2018-11-23 | 加拿大特尔萨特公司 | Satellite communication subsystem validating in orbit system and method |
| US10567072B2 (en) * | 2015-11-27 | 2020-02-18 | Telesat Canada | Satellite communications subsystem in-orbit verification system and methodologies |
| CN109861737A (en) * | 2017-11-30 | 2019-06-07 | 电视广播有限公司 | Automatic satellite telemetering, tracking and command system |
| CN108650033A (en) * | 2018-04-19 | 2018-10-12 | 摩比天线技术（深圳）有限公司 | Test method, test terminal, test system and the storage medium of radio-frequency devices |
| CN110138442A (en) * | 2019-05-23 | 2019-08-16 | 上海微小卫星工程中心 | Floor synthetic test macro and method for satellite data transmission |
Non-Patent Citations (4)
| Title |
|---|
| "G/T measurement techniques for MUOS on orbit testing";J. A. Bush,et al.，;《 2010 - MILCOM 2010 MILITARY COMMUNICATIONS CONFERENCE》;20110106;全文 * |
| "卫星信号源在信道检测中的应用与方法";殷克勤，;《沙漠与绿洲气象》;20091103;第3卷;全文 * |
| "卫星地面应用系统集成测试环境及测试方法研究";常立新，;《中国优秀硕士学位论文全文数据库 (基础科学辑)》;20180215 * |
| "推进卫星互联网战略发展的研究";任维赫，;《现代电信科技》;20170831;第47卷(第4期) * |
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