Microwave communication downlink interference channel simulation method and system

Abstract

The present application proposes a method and system for simulating a microwave communication downlink interference channel. Considering the mobility of interference signal sources and terminal devices, the method and system will analyze the visibility between the microwave relay device and the terminal device, and between the terminal device and the interference signal source, respectively, based on the current position information of the microwave relay device, the terminal device and the interference signal source, so as to dynamically simulate the corresponding downlink communication signal and the interference signal according to the corresponding signal processing method, realize the dynamic simulation of the downlink communication channel and the interference channel, and obtain the corresponding simulated downlink communication signal and simulated interference signal. Taking into account the influence of the antenna directivity and directional pattern of the terminal device on the interference effect, according to the dynamic position of the terminal device and the interference signal source and the antenna directional pattern of the terminal device, the simulated interference signal is processed and then processed with the simulated downlink communication signal to output the dynamically simulated downlink interference channel simulation signal.

Description

Technical Field

[0001] The present application relates to the field of microwave communications, and in particular to a method and system for simulating a microwave communication downlink interference channel. Background Art

[0002] At present, in the research on anti-interference performance in microwave communication environments (such as satellite communication, microwave relay communication, etc.), interference countermeasure research is usually carried out on the uplink (i.e., the microwave communication link / channel from the transmitting station to the microwave relay device) of microwave relay equipment such as satellites and microwave relay stations. For this purpose, a microwave communication uplink interference simulator can be built to achieve a variety of microwave communication uplink interference environments to test the anti-interference performance of microwave relay equipment.

[0003] However, with the gradual development of air-based and space-based interference platforms, the research on interference countermeasures for microwave communication downlinks (i.e., microwave communication links from microwave relay equipment to terminal equipment) has gradually entered practical use. However, since the characteristics of microwave communication downlink interference signals are different from those of uplink interference signals, and terminal equipment is often in a mobile state and uses highly directional antennas for communication, interference signals are often injected from side lobes, etc., resulting in the microwave communication uplink interference channel simulator not being suitable for simulating microwave communication downlink interference environments, and thus the reliability and accuracy of the research results on interference countermeasures for microwave communication downlinks cannot be guaranteed. Summary of the invention

[0004] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0005] On the one hand, the present application proposes a method for simulating a microwave communication downlink interference channel, the method comprising:

[0006] Obtain downlink communication signals and interference signals in microwave communication scenarios;

[0007] According to the respective position information of the microwave relay device, the terminal device and the interference signal source in the microwave communication scenario, the visibility analysis is performed between the microwave relay device and the terminal device, and between the terminal device and the interference signal source; the position information is dynamically updated according to the preset simulation step time;

[0008] According to the signal processing method corresponding to the obtained inter-visibility analysis result, respectively, the corresponding downlink communication signal and the interference signal are dynamically simulated to obtain corresponding simulated downlink communication signal and simulated interference signal;

[0009] Processing the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information;

[0010] The processed simulated interference signal is co-frequency combined with the simulated downlink communication signal, and the obtained downlink interference channel simulated signal of the currently preset simulation step time is output.

[0011] Optionally, the processing of the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information, includes:

[0012] Obtaining a sidelobe gain value of the antenna of the terminal device according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information;

[0013] The sidelobe gain value is used to perform gain processing on the simulated interference signal obtained within the same preset simulation step time.

[0014] Optionally, obtaining the sidelobe gain value of the antenna of the terminal device according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information, includes:

[0015] According to the respective position information of the terminal device and the interference signal source, a simulated injection angle of the interference signal generated by the interference signal source to the terminal device antenna within a corresponding preset simulation step time is obtained; the simulated injection angle includes a simulated injection azimuth angle and a simulated injection pitch angle;

[0016] Retrieving the antenna pattern function corresponding to the antenna system of the terminal device from the respective antenna pattern functions of the preset multiple antenna systems;

[0017] According to the simulated injection angle, the sidelobe gain value of the terminal device antenna is obtained by using the retrieved antenna pattern function.

[0018] Optionally, obtaining the sidelobe gain value of the antenna of the terminal device according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information, further includes:

[0019] Determine that the antenna pattern function corresponding to the antenna system of the terminal device does not exist in the antenna pattern functions of the respective preset multiple antenna systems, and obtain the measured pattern gain point data for the antenna of the terminal device;

[0020] A three-dimensional fitting calculation is performed on the measured directional pattern gain point data to obtain the sidelobe gain value of the terminal device antenna.

[0021] Optionally, the signal processing method corresponding to the obtained inter-visibility analysis result is used to perform dynamic simulation processing on the corresponding downlink communication signal and the interference signal to obtain the corresponding simulated downlink communication signal and simulated interference signal, including:

[0022] Determine that the obtained intervisibility analysis result is intervisibility, and obtain the attenuation value and delay value of the corresponding signal within the current preset simulation step time according to the relative distance between the corresponding devices;

[0023] Using the attenuation value and the delay value, attenuate and delay the corresponding downlink communication signal and / or the interference signal to obtain a corresponding simulated downlink communication signal and / or simulated interference signal;

[0024] Determine that the obtained visibility analysis result is no visibility, and process the corresponding downlink communication signal and / or the interference signal according to the background noise generation method to obtain a simulated downlink communication signal and / or a simulated interference signal within a current preset simulation step time.

[0025] Optionally, performing visibility analysis between the microwave relay device and the terminal device, and between the terminal device and the interference signal source, respectively, based on the respective position information of the microwave relay device, the terminal device, and the interference signal source in the microwave communication scenario, includes:

[0026] receiving dynamic trajectory data of the terminal device, dynamic trajectory data of the interference signal source, and the current position of the microwave relay device in microwave communication with the terminal device acquired and fed back by the simulator control device;

[0027] Extracting the current position of the terminal device from the dynamic trajectory data of the terminal device; and extracting the current position of the interference signal source from the dynamic trajectory data of the interference signal source;

[0028] Using the current position of the microwave relay device and the current position of the terminal device, obtaining the geographical connection and relative distance between the microwave relay device and the terminal device;

[0029] Using the current position of the interference signal source and the current position of the terminal device, obtaining a geographical connection line and a relative distance between the interference signal source and the terminal device;

[0030] According to the digital elevation map, the geographical connection between the microwave relay device and the terminal device, and the geographical connection between the interference signal source and the terminal device are respectively analyzed for visibility.

[0031] Optionally, the acquiring a downlink communication signal and an interference signal in a microwave communication scenario includes:

[0032] Acquire a downlink communication signal sensed by a microwave receiving antenna in a microwave scenario;

[0033] When it is determined that the microwave receiving antenna does not sense the downlink communication signal or the microwave receiving antenna does not exist in the microwave scene, triggering the analog signal source to run and obtaining the analog downlink communication signal generated by the analog signal source;

[0034] Obtaining an interference signal generated by an external interference signal source in the microwave scenario;

[0035] When it is determined that the external interference signal source does not exist or the interference signal generated by the external interference signal source is not received, the simulated interference signal source is triggered to run and the simulated interference signal source generated by the simulated interference signal source is obtained.

[0036] Optionally, the outputting of the downlink interference channel simulation signal of the currently preset simulation step time includes:

[0037] Sending the obtained downlink interference channel simulation signal of the current preset simulation step time to the terminal device to show the simulated interference effect; and / or,

[0038] The obtained downlink interference channel simulation signal of the current preset simulation step time is sent to the simulator control device, and the simulator control device performs interference analysis on the downlink interference channel simulation signal and outputs the obtained simulation interference effect evaluation result.

[0039] On the other hand, the present application also proposes a microwave communication downlink interference channel simulation system, the system comprising:

[0040] Simulator control equipment, used to configure the relevant parameters for simulating the microwave communication downlink interference channel;

[0041] A downlink interference simulator connected to the simulator control device, the downlink interference simulator comprising:

[0042] A communication signal acquisition module, used to acquire downlink communication signals in a microwave communication scenario;

[0043] An interference signal acquisition module, used to acquire interference signals in microwave communication scenarios;

[0044] A communication channel dynamic simulation module is used to perform visibility analysis between the microwave relay device and the terminal device according to the respective position information of the microwave relay device and the terminal device in the microwave communication scenario, and dynamically simulate the downlink communication signal according to the signal processing method corresponding to the obtained visibility analysis result to obtain a simulated downlink communication signal; the position information is dynamically updated according to a preset simulation step time;

[0045] The interference channel dynamic simulation module is used to perform visibility analysis between the terminal device and the interference signal source according to the respective position information of the terminal device and the interference signal source in the microwave communication scenario, and dynamically simulate the interference signal according to the signal processing method corresponding to the obtained visibility analysis result to obtain a simulated interference signal; the position information is dynamically updated according to a preset simulation step time;

[0046] A receiving antenna parameter simulation module, used to process the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information;

[0047] The signal combiner is used to perform co-frequency combination of the processed analog interference signal and the analog downlink communication signal, and output the obtained downlink interference channel analog signal of the current preset simulation step time.

[0048] Optionally, the receiving antenna parameter simulation module includes:

[0049] An injection angle simulation module is used to obtain, according to the respective position information of the terminal device and the interference signal source, a simulated injection angle of the interference signal generated by the interference signal source to the antenna of the terminal device within a corresponding preset simulation step time; the simulated injection angle includes a simulated injection azimuth angle and a simulated injection pitch angle;

[0050] The receiving antenna directivity simulation module is used to call the antenna pattern function corresponding to the antenna system of the terminal device from the antenna pattern functions of the preset multiple antenna systems, and obtain the sidelobe gain value of the terminal device antenna by using the called antenna pattern function according to the simulated injection angle, and use the sidelobe gain value to perform gain processing on the simulated interference signal obtained within the same preset simulation step time.

[0051] On the other hand, the present application also proposes a computer-readable storage medium on which a plurality of computer instructions are stored. The plurality of computer instructions are loaded and executed by a processor to implement the microwave communication downlink interference channel simulation method as described above.

[0052] Based on the above technical solution, this application proposes a method and system for simulating a microwave communication downlink interference channel. Considering the mobility of interference signal sources and terminal devices, the present application will analyze the visibility between the microwave relay device and the terminal device, and between the terminal device and the interference signal source, respectively, based on the current position information of the microwave relay device, the terminal device and the interference signal source, so as to dynamically simulate the corresponding downlink communication signal and the interference signal according to the corresponding signal processing method, realize the dynamic simulation of the downlink communication channel and the interference channel, and obtain the corresponding simulated downlink communication signal and simulated interference signal. Taking into account the influence of the antenna directivity and directional pattern of the terminal device on the interference effect, according to the dynamic position of the terminal device and the interference signal source and the antenna directional pattern of the terminal device, the simulated interference signal is processed and then processed with the simulated downlink communication signal in the same frequency, and the dynamic simulated downlink interference channel simulation signal is output to realize the research on the interference countermeasure of the microwave communication downlink link and ensure the reliability and accuracy of the research results. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0054] Figure 1 A schematic diagram of the structure of an optional example of a microwave communication downlink interference channel simulation system proposed in this application;

[0055] Figure 2 A schematic diagram of the structure of another optional example of the microwave communication downlink interference channel simulation system proposed in the present application;

[0056] Figure 3 A flowchart of an optional example of a microwave communication downlink interference channel simulation method proposed in this application;

[0057] Figure 4 A flowchart of another optional example of the microwave communication downlink interference channel simulation method proposed in this application;

[0058] Figure 5 A flowchart of another optional example of the microwave communication downlink interference channel simulation method proposed in this application;

[0059] Figure 6 A flowchart of another optional example of the microwave communication downlink interference channel simulation method proposed in the present application. DETAILED DESCRIPTION

[0060] In view of the description in the background technology section, the present application hopes to design a corresponding interference simulator, namely, a microwave communication downlink interference channel simulator, for the microwave communication downlink (namely, the microwave communication link from the microwave relay link to the terminal device, namely, the downlink channel), so that it can simulate the downlink environment of the microwave mobile terminal, and be used for anti-interference research and effect evaluation of the microwave communication downlink by air-based and space-based interference platforms, so as to ensure the reliability and accuracy of the microwave downlink anti-interference research achieved thereby.

[0061] In this regard, by studying the communication mode of the terminal equipment at one end of the microwave communication downlink, since the terminal equipment uses a highly directional antenna and an alignment device to communicate with the microwave relay equipment, the downlink interference signal often enters from the side lobe, and the interference-to-signal ratio is related to the antenna pointing angle, antenna pattern, interference signal entry angle, etc. Therefore, when designing an interference simulator for the microwave communication downlink, that is, a channel simulator for signal simulation of microwave communication downlink interference, the interference sidelobe injection and interference source and the movement of the terminal equipment can be considered, and a method for dynamically updating the channel and injection angle parameters according to the trajectory can be designed to simulate the interference signal injection effect of the highly directional antenna of the terminal equipment. By simulating the attenuation of the signal through the signal path and the interference path, the obtained mixed signal can be transmitted to the connected terminal equipment for interference effect evaluation and demonstration. Among them, the target communication signal and interference signal used in the above simulation process can be connected to the external actual signal, or can be generated internally, so that it can be applied to a variety of application scenarios.

[0062] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0063] Reference Figure 1 , is a logical structure diagram of an optional example of the microwave communication downlink interference channel simulation system proposed in this application. Combined with the above description of the technical solution of this application, it can be seen that the microwave communication downlink interference channel simulator mainly simulates the influence of the terminal device antenna pointing and directional pattern on the interference effect, and can also simulate the dynamic change of the interference effect of the terminal device and the interference source during the relative movement. Therefore, Figure 1 As shown, the microwave communication downlink interference channel simulation system may include: a downlink interference simulator 100 and a simulator control device 200, wherein:

[0064] The downlink interference simulator 100 can be a simulation system deployed on a microwave relay device. The microwave relay device can be connected to the microwave communication of the terminal device and the microwave transmitting station to form corresponding downlinks and uplinks to meet the microwave communication requirements. This application does not elaborate on the communication principles of each microwave communication scenario.

[0065] The simulator control device 200 can be an electronic device with certain data processing and data input capabilities, such as a laptop computer, a desktop computer, an industrial computer, a smart phone, a smart communication device, etc. This application does not limit the device type of the simulator control device 200, which can be determined according to the situation.

[0066] In an embodiment of the present application, the simulator control device 200 can be configured with relevant interference parameters supporting the simulation of the microwave communication downlink interference channel, and can also display the interference effect evaluation result. In combination with the microwave communication downlink interference channel simulation scheme proposed in the present application, in order to obtain the dynamic trajectory data of the terminal device participating in the microwave communication, the dynamic trajectory data of the interference signal source, etc., after starting the simulator control software of the simulator control device 200 and entering the device dynamic configuration interface, the dynamic conditions of the terminal device and the interference signal source can be input on the two-dimensional or three-dimensional map output by the simulator control software, such as selecting or inputting the location trajectory of the terminal device and the interference signal source on the two-dimensional or three-dimensional latitude and longitude map, which can be a series of latitude and longitude coordinates with time tags, that is, a latitude and longitude sequence with time tags, so as to determine the respective positions of the terminal device and the interference signal source at a certain time (such as latitude and longitude coordinates) accordingly.

[0067] In addition, since the present application takes into account the influence of the simulated terminal antenna pointing and directional pattern on the interference effect in the simulation of the microwave communication downlink interference channel, the present application can also use the simulator control device 200 to configure the receiving antenna parameters, such as for inputting the terminal device antenna system, antenna aperture and other key antenna parameters, so as to calculate the directional angle and other parameters of the terminal device antenna. The present application does not restrict the content of the receiving antenna parameters and can be flexibly adjusted as needed.

[0068] Based on this, during the simulation of the microwave communication downlink interference channel, the simulator control device 200 can send the obtained parameters to the corresponding module in the downlink interference simulator 100, so that the downlink interference simulator 100 can use these parameters to simulate the downlink interference environment of the microwave communication downlink interference channel, and realize the research on the countermeasure of microwave communication downlink interference. Regarding the respective component structures of the downlink interference simulator 100 and the simulator control device 200, and the logical control structure of the microwave communication downlink interference channel simulation method proposed in this application, reference can be made to but not limited to the description of the detailed scheme of the system embodiment below.

[0069] In some embodiments, in order to simulate the downlink interference environment of the microwave communication downlink from the microwave relay device to the terminal device, combined with the technical solution described above, such as Figure 1 As shown, the downlink interference simulator 100 includes a communication signal acquisition module 110, an interference signal acquisition module 120, a communication channel simulation module 130, an interference channel simulation module 140, an injection angle simulation module 150, a receiving antenna parameter simulation module 160, a signal combiner 170, a signal output module 180, etc., wherein:

[0070] The communication signal acquisition module 110 can be used to obtain the downlink communication signal required for downlink interference countermeasure research, that is, the downlink communication signal in the microwave communication scenario. The present application does not limit the method for obtaining the downlink communication signal. It can come from an external real downlink communication signal or it can be a simulated downlink communication signal output from an analog signal source, which can be determined based on the actual situation of microwave communication.

[0071] Optionally, since the reliability of downlink interference countermeasure research using real downlink communication signals is higher than that of simulated downlink communication signals, in actual applications, it is preferred to use real downlink communication signals to simulate microwave communication downlink interference channels. However, in scenarios where real downlink communication signals cannot be received due to various factors, it is possible to choose to use simulated downlink communication signals to continue to complete the microwave communication downlink interference channel simulation to ensure the efficiency of microwave communication downlink interference countermeasure research. Therefore, the embodiment of the present application hopes that the communication signal acquisition module 110 can flexibly select an external real signal or a simulated signal as the target downlink communication signal output. In this regard, if Figure 2 As shown, the communication signal acquisition module 110 may include but is not limited to a downlink signal interface 111 , an analog signal source 112 , and a communication signal selector 113 .

[0072] The downlink signal interface 111 can be used to receive a real microwave downlink signal sensed by an external microwave receiving antenna, which may refer to a real target downlink communication signal. In this way, the downlink signal interface 111 may also be called a real received signal interface. This application does not elaborate on the type of the downlink signal interface 111 and how it obtains the real downlink communication signal sensed by the external microwave receiving antenna.

[0073] The analog signal source 112 can be used to generate a simulated communication signal, that is, a simulated downlink communication signal, and can simulate the downlink communication signal according to the parameters of the actual microwave communication downlink interference scenario. The present application does not elaborate on the working principle of the analog signal source 112. In this way, the embodiment of the present application configures the analog signal source 112 in the downlink interference simulator. When the real downlink communication signal from the microwave receiving antenna cannot be obtained in the environment, the analog signal source 112 can be triggered to run, so that the downlink interference simulator itself can also generate a simulated downlink communication signal, thereby realizing the research on the countermeasure against downlink interference in microwave communication.

[0074] The two selection ports of the communication signal selector 113 can be connected to the downlink signal interface 111 and the analog signal source 112 respectively. Figure 2 As shown, the selection component of the communication signal selector 113 can be controlled to connect to one of the selection ports to receive the real downlink communication signal transmitted by the corresponding downlink signal interface 111, or the simulated downlink communication signal output by the analog signal source 112.

[0075] Based on this, the present application can determine whether a real downlink communication signal can be obtained by detecting interference scenario parameters, such as the location of the microwave relay equipment, uplink and downlink frequencies, transponder bandwidth, maximum saturation flux density and other link parameters, and then implement switching control of the selection component of the communication signal selector 113 based on the detection result to ensure that the communication signal acquisition module 110 can output a downlink communication signal under any circumstances, such as a real downlink communication signal or a simulated downlink communication signal.

[0076] In some other embodiments, the communication signal acquisition module 110 can also be directly replaced with an analog signal source, so that the analog signal source can be used to generate the required analog downlink communication signal in any scenario, without the need for scenario detection and selection control of the communication signal selector 113. The present application does not limit the acquisition method of the downlink communication signal required by the downlink interference simulator, which can be determined according to the circumstances. For different acquisition methods, the composition structure of the communication signal acquisition module 110 can be adaptively adjusted, including but not limited to the composition structure described in the present application.

[0077] The interference signal acquisition module 120 can be used to obtain the interference signal required for the downlink interference countermeasure research, that is, the interference signal in the microwave communication scenario. In the actual application of this application, the interference signal can come from an analog interference signal source or an external interference signal source, and this application does not limit the method for obtaining the interference signal. In some embodiments, the interference signal acquisition module 120 may include an analog interference signal source for generating a simulated interference signal, and the generation process of the analog interference signal is not described in detail in this application.

[0078] In some other embodiments, similar to the implementation method of obtaining the downlink communication signal above, the present application can provide multiple interference signal acquisition methods, which can be flexibly selected according to actual conditions to ensure that the interference signal acquisition module 120 can output the interference signal required for the downlink interference countermeasure research in real time. Figure 2 As shown, the interference signal acquisition module 120 may include: an interference signal interface 121, a simulated interference signal source 122 and an interference signal selector 123, wherein:

[0079] The interference signal interface 121 can be connected to an external interference signal source to receive the interference signal generated by the external interference signal source, that is, to obtain a real interference signal; the analog interference signal source 122 can be used to generate a simulated interference signal. In this way, in the absence of an external interference signal source, the analog interference signal source 122 can be used to output the required analog interference signal.

[0080] The two selection ports of the interference signal selector 123 can be connected to the interference signal interface 121 and the analog interference signal source 122, respectively. Figure 2 As shown, by controlling the selection component of the interference signal selector 123 to be connected to one of the selection ports, the real interference signal transmitted by the correspondingly connected interference signal interface 121 or the simulated interference signal output by the simulated interference signal source 122 is received.

[0081] Based on this, in the actual application of this embodiment, by detecting the parameters of the external interference scenario, it can be determined whether there is an interference signal generated by an interference signal source. If so, the interference signal selector 123 can be controlled to connect to the interference signal interface 121 to obtain the interference signal generated by the external interference signal source received by the interference signal interface 121; conversely, the interference signal selector 123 can be controlled to connect to the analog interference signal source 122 to obtain the analog interference signal output by the analog interference signal source 122. This application does not elaborate on the configuration implementation method of the control logic.

[0082] From the above analysis, it can be seen that the downlink communication signals and interference signals used in the interference simulation of this application can be introduced from the outside or generated by the downlink interference simulator itself, so that the microwave communication downlink interference channel simulation system proposed in this application can be applicable to a variety of application scenarios.

[0083] The communication channel simulation module 130 can dynamically process the downlink communication signal output by the communication signal acquisition module 110 according to the relative position change between the terminal device and the microwave relay device, and dynamically simulate the pseudo microwave communication downlink channel. That is, the impact of the mobility of the terminal device itself on the interference effect of the microwave communication downlink channel is considered to achieve dynamic simulation. Therefore, the communication channel simulation module 130 can be used to perform visibility analysis between the microwave relay device and the terminal device according to the respective position information of the microwave relay device and the terminal device in the microwave communication scenario, and dynamically simulate the downlink communication signal according to the signal processing method corresponding to the obtained visibility analysis result to obtain a simulated downlink communication signal.

[0084] In the embodiment of the present application, the communication channel simulation module 130 can obtain the dynamic trajectory data of the terminal device, such as the location information of the terminal device and the location information of the microwave relay device, from the simulator control device 200 during each dynamic simulation process, and calculate the communication link and relative distance between the terminal device and the microwave relay device based on this. It can be further combined with the digital elevation map to determine the visibility of the connection between the current terminal device and the microwave relay device, that is, to determine whether there is any terrain obstruction on the communication link between the terminal device and the microwave relay device, which affects the communication link for the transmission of microwave communication signals between the two. Then, a corresponding processing method is adopted to process and output the received downlink communication signal. The implementation process can refer to the description of the corresponding part of the method embodiment below, and this embodiment will not be described in detail here.

[0085] The interference channel simulation module 140 can determine the visibility of the physical connection between the terminal device and the interference signal source within each simulation step according to the relative position change between the terminal device and the interference signal source, and then use the corresponding processing method to process the received interference signal (such as an interference signal from an external interference signal source or a simulated interference signal source) to achieve dynamic simulation of the interference signal between the terminal device and the interference signal source. Therefore, the interference channel simulation module 140 can be used to perform visibility analysis between the terminal device and the interference signal source based on the respective position information of the terminal device and the interference signal source in the microwave communication scenario, and dynamically simulate the interference signal according to the signal processing method corresponding to the obtained visibility analysis result to obtain a simulated interference signal.

[0086] Among them, the interference channel simulation module 140 can obtain the dynamic trajectory data of the terminal device from the simulator control device 200 to extract the respective positions of the current terminal device and the interference signal source, and calculate the physical connection and distance between the two based on this, and combine the data elevation map to determine whether there is a terrain obstruction on the physical connection, and determine the processing method of the interference signal from the interference signal acquisition module based on this. The implementation process can refer to the description of the corresponding part of the method embodiment below, and this embodiment will not be described in detail here.

[0087] The downlink interference simulator 100 may also include a receiving antenna parameter simulation module, which is used to process the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and the preset antenna pattern information. Figure 1 and Figure 2 As shown, the receiving antenna parameter simulation module may include an injection angle simulation module 150 and a receiving antenna directivity simulation module 160, wherein:

[0088] The injection angle simulation module 150 can be used to obtain the simulated injection angle parameters of the interference signal generated by the interference signal source to the terminal device antenna within the preset simulation step time according to the respective position information of the terminal device and the interference signal source, such as the simulated injection azimuth angle and the simulated injection elevation angle. In practical applications, the dynamic trajectory data of the interference signal source can be obtained from the simulator control device 200 to determine the real-time relative position between the terminal device and the interference signal source, and calculate the simulated injection azimuth angle and simulated injection elevation angle of the interference signal to the terminal device antenna.

[0089] It can be seen that the present application takes into account the problem of interference signal injection from the sidelobe on the downlink of the terminal device, and dynamically updates the channel and injection angle parameters according to the trajectory to achieve dynamic simulation of the interference effect. The present application does not limit the calculation implementation method of the simulated injection angles such as the simulated injection azimuth angle and pitch angle of the terminal device antenna, and can refer to but is not limited to the description of the corresponding part of the method embodiment below.

[0090] The receiving antenna parameter simulation module 160 can be used to obtain the simulated injection angle output by the injection angle simulation module 150 and the receiving antenna parameters determined by the simulator control device 200, thereby calculating the terminal device antenna sidelobe gain value based on the acquired data using the pre-stored terminal device antenna pattern, and then the interference signal can be gain processed and output accordingly.

[0091] Specifically, the receiving antenna parameter simulation module 160 can be used to retrieve the antenna pattern function corresponding to the antenna system of the terminal device from the respective antenna pattern functions of the preset multiple antenna systems, and obtain the sidelobe gain value of the terminal device antenna by using the retrieved antenna pattern function according to the simulated injection angle, and perform gain processing on the simulated interference signal obtained within the same preset simulation step time by using the sidelobe gain value. If the antenna pattern function corresponding to the antenna system of the terminal device is not retrieved, the measured pattern gain point data for the terminal device antenna can be obtained, and the sidelobe gain value of the terminal device antenna can be obtained by performing a three-dimensional fitting calculation on the measured pattern gain point data.

[0092] It can be seen that this application takes into account the antenna parameters such as the directional pattern, directional angle, and interference signal injection angle of the terminal device's directional antenna, accurately simulates the interference signal injection effect of the terminal device's highly directional antenna, and ensures the reliability and accuracy of the microwave communication downlink interference channel simulation. It should be noted that this application does not limit the calculation method of the sidelobe gain value of the above-mentioned terminal device's highly directional antenna, which can be determined as needed.

[0093] The signal combiner 170 can be connected to the communication channel simulation module 130 and the receiving antenna parameter simulation module 160, and the downlink communication signal and the interference signal after gain processing output by the two signals are processed at the same frequency. The implementation process can be determined in combination with the working principle of the same frequency combiner, and the embodiment of the present application will not be described in detail here. For the signal after the same frequency combination, one channel can be fed back to the simulator control device 200 for analysis and processing, and the obtained simulated interference effect evaluation result is output. The other channel can be transmitted to the signal output module 180, and the signal output module 180 transmits the combined signal to the connected terminal device, and the downlink simulated interference effect is observed on the terminal device.

[0094] In summary, the microwave communication downlink interference channel simulation system proposed in this application takes into account the interference sidelobe injection and the movement of the interference source and the terminal, and dynamically updates the channel and injection angle parameters according to the trajectory. It can simulate the dynamic changes of the interference effect during the relative movement of the terminal and the interference source, and meet the needs of microwave communication downlink interference channel simulation. Based on this, the anti-interference performance of the downlink channel can be studied, and the anti-interference ability of the downlink channel from the microwave relay equipment link to the terminal equipment in actual application scenarios can be improved.

[0095] It should be noted that in the process of microwave communication downlink interference countermeasure research, the influencing factors considered are different, and the structure of the designed microwave communication downlink interference channel simulation system can be adaptively adjusted, including but not limited to the above Figure 1 and Figure 2 The system composition structure shown can be flexibly configured according to actual simulation requirements, and this application will not list them one by one here.

[0096] The following will be based on Figure 1 and Figure 2 The composition structure of the microwave communication downlink interference channel simulation system shown in the figure describes the microwave communication downlink interference channel simulation method proposed in the present application, and the implementation process of the method can be described from the downlink interference simulator 100 side in the system, but is not limited to the technical solution described in the method embodiment below.

[0097] Reference Figure 3 , is a flow chart of an optional example of a method for simulating a microwave communication downlink interference channel proposed in the present application, which can be executed by the downlink interference simulator 100 of the above system, such as Figure 3As shown, the method may include but is not limited to the following steps:

[0098] Step S31, obtaining a downlink communication signal and an interference signal in a microwave communication scenario;

[0099] Combined with the description of the corresponding parts of the above embodiments, the downlink communication signal and the interference signal can both come from external signals, or the analog signal source / analog interference signal source configured by the downlink interference simulator 100 itself can generate corresponding analog signals, that is, simulated downlink communication signals and simulated interference signals. This application does not limit the implementation method of step S31.

[0100] Step S32, based on the respective position information of the microwave relay device, the terminal device and the interference signal source in the microwave communication scenario, respectively, performing visibility analysis between the microwave relay device and the terminal device, and between the terminal device and the interference signal source; the position information is dynamically updated according to a preset simulation step time;

[0101] The downlink interference simulator proposed in the embodiment of the present application takes into account the mobility of the interference signal source and the terminal device, and can simulate the dynamic changes of the interference effect during the relative movement of the terminal device and the interference signal source. Therefore, the position information of the microwave relay device, the terminal device and the interference signal source in the microwave communication scenario can be dynamically obtained according to the preset simulation step time. The position information can be obtained from the simulator control device 200 in the above-mentioned system. The acquisition process will not be described in detail in this embodiment.

[0102] The above-mentioned visibility analysis can be to analyze whether there is a terrain obstruction on the geographical connection between the two devices, which can be implemented based on the topographic map of the location of the equipment, whether there is a terrain obstruction between the microwave relay equipment and the terminal equipment, and whether there is a terrain obstruction between the terminal equipment and the interference signal source, that is, the line of sight visibility between the two devices. This application does not limit the line of sight analysis method between the above two devices.

[0103] Step S33, according to the signal processing method corresponding to the obtained inter-visibility analysis result, respectively perform dynamic simulation processing on the corresponding downlink communication signal and interference signal to obtain the corresponding simulated downlink communication signal and simulated interference signal;

[0104] According to the above-mentioned visibility analysis method, after determining the visibility analysis results of whether the geographical connection between the microwave relay device and the terminal device has line of sight or not, and whether the geographical connection between the terminal device and the interference signal source has line of sight or not, if the geographical connection has no line of sight, that is, there is a terrain obstruction between the corresponding devices, a background noise signal, that is, a white noise signal, can be generated. The background noise generation method is not described in detail in this application.

[0105] On the contrary, if the geographical connection is visible, that is, the terrain between the two corresponding devices is not blocked, the attenuation value and delay value of the corresponding signal can be calculated based on the current relative distance between the two corresponding devices, and the attenuation and delay processing of the received signal can be implemented accordingly, and the corresponding analog signal obtained by processing is output. After a preset simulation step time delay, the location information of the corresponding device can be updated again, and the visibility analysis of the updated position between the two corresponding devices can be re-performed according to the above method. According to the signal processing method corresponding to the visibility analysis result, the currently received signal is continued to be processed, and the obtained analog signal is output. Such a cyclic processing is carried out to realize the dynamic simulation of the communication channel under the condition of terminal device movement, and the dynamic simulation of the interference channel under the condition of the relative position change of the terminal device and the interference signal source.

[0106] Step S34, processing the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and the preset antenna pattern information;

[0107] In the process of simulating the downlink interference channel of microwave communication, in addition to considering the mobility of the terminal equipment and the interference signal source, the influence of the terminal equipment antenna pointing and radiation pattern on the interference effect can also be considered, and the simulated interference signal after the above-mentioned dynamic simulation processing of the interference signal from the interference signal source can be adjusted to make it more consistent with the interference signal of the actual downlink interference channel.

[0108] Therefore, the embodiment of the present application can calculate the simulated injection angle of the interference signal to the terminal device antenna based on the real-time relative position of the terminal device and the interference signal source, and calculate the sidelobe gain value of the terminal device antenna in combination with the directional diagram information of the terminal device antenna, so as to achieve the output after gain processing of the received simulated interference signal. Among them, the simulated injection angle of the terminal device antenna can be updated regularly according to the preset simulation step time, and after the simulated injection angle is updated, the sidelobe gain value can be updated in time according to the above method, and the implementation process is not described in detail in this application.

[0109] Step S35, performing co-frequency combination on the processed simulated interference signal and the simulated downlink communication signal, and outputting the obtained downlink interference channel simulated signal of the currently preset simulation step time.

[0110] After simulating the dynamic simulation processing of the downlink communication channel and the interference channel according to the method described above and obtaining one simulated downlink communication signal and one simulated interference signal, these two simulated signals can be processed by co-frequency combination to obtain a microwave communication downlink interference channel simulation signal, that is, a simulated mixed signal after combination, which is used to realize the research on interference countermeasures of microwave communication downlink channel, so as to improve the reliability and accuracy of microwave communication downlink signal transmission.

[0111] In summary, in the embodiments of the present application, in order to realize the simulation of the microwave communication downlink interference channel and fully consider the mobility of the interference signal source and the terminal device, the microwave relay device, the terminal device and the interference signal source will be analyzed based on the respective position information of the microwave relay device, the terminal device and the interference signal source in the current microwave communication scenario, so that the corresponding downlink communication signal and the interference signal can be dynamically simulated and processed according to the corresponding signal processing method, so as to realize the dynamic simulation of the downlink communication channel and the interference channel, and obtain the corresponding simulated downlink communication signal and simulated interference signal.

[0112] Afterwards, considering the influence of the terminal device antenna directivity and radiation pattern on the interference effect, the present application can also process the above-mentioned simulated interference signal according to the dynamic positions of the terminal device and the interference signal source, and the terminal device antenna radiation pattern, and perform co-frequency combining on the processed simulated interference signal with the above-mentioned simulated downlink communication signal to obtain a dynamically simulated downlink interference channel simulation signal, so as to realize the research on interference countermeasures of microwave communication downlink link and ensure the reliability and accuracy of the research results.

[0113] Reference Figure 4 , is a flowchart of another optional example of the microwave communication downlink interference channel simulation method proposed in this application. This embodiment can describe an optional detailed implementation of the microwave communication downlink interference channel simulation method described above, but is not limited to the detailed implementation method described in this embodiment. Figure 4 As shown, the method may include:

[0114] Step S41, obtaining a downlink communication signal and an interference signal in a microwave communication scenario;

[0115] In some embodiments, in combination with the above Figure 1 and Figure 2 In the schematic diagram of the system structure shown in the figure, the communication signal acquisition module 110 can obtain the downlink communication signal from the outside through the downlink signal interface 111, and can also trigger the self-configured analog signal source 112 to run and obtain the simulated downlink communication signal generated by the analog signal source 112. Therefore, the downlink interference simulator 100 can obtain the downlink communication signal sensed by the microwave receiving antenna in the microwave scene, and when it is determined that the microwave receiving antenna does not sense the downlink communication signal or there is no microwave receiving antenna in the microwave scene, the analog signal source 112 is triggered to run and the simulated downlink communication signal generated by the analog signal source 112 is obtained.

[0116] In some other embodiments, as described above Figure 1 and Figure 2The composition structure of the interference signal acquisition module 120 shown in the figure can also obtain the interference signal generated by the external interference signal source in the microwave scene through the interference signal interface 121, and can also trigger the operation of the simulated interference signal source 122 to obtain the simulated interference signal generated by the simulated interference signal source 122. In practical applications, when it is determined that there is no external interference signal source, or when the interference signal generated by the external interference signal source is not received, the simulated interference signal source can be triggered to operate and obtain the simulated interference signal source generated by the simulated interference signal source. The implementation process is not described in detail in this application.

[0117] Step S42, receiving the dynamic trajectory data of the terminal device, the dynamic trajectory data of the interference signal source, and the current position of the microwave relay device in microwave communication with the terminal device acquired and fed back by the simulator control device;

[0118] Step S43, extracting the current position of the terminal device from the dynamic trajectory data of the terminal device; and extracting the current position of the interference signal source from the dynamic trajectory data of the interference signal source;

[0119] In combination with the above description of the system embodiment of the present application, the present application can use the simulator control device to start the simulator control software in advance, enter the input interface corresponding to the required entry parameters, and enter the reference in the input interface, such as interference scene parameters, dynamic trajectory data of the terminal device, dynamic trajectory data of the interference signal source, receiving antenna parameters, etc. The present application does not limit the content of these parameters and can be determined according to the situation.

[0120] Among them, the interference scenario parameters can be used to configure the microwave relay device location, microwave relay device configuration parameters and other required public parameters, such as the uplink and downlink frequencies of the microwave relay device, the transponder bandwidth, the maximum saturation flux density, etc., and can also include the commonly used link parameters of microwave communication, etc. In the actual application of this application, the interference scenario can be determined and adjusted accordingly to realize the downlink interference countermeasure research.

[0121] In order to dynamically simulate the microwave communication downlink interference channel, the position information of the microwave relay device, the terminal device, and the interference signal source can be periodically obtained according to the preset simulation step time, so that the downlink channel can be dynamically simulated according to the position movement. Optionally, the above-mentioned dynamic trajectory data can be a longitude and latitude sequence with a time tag, so that the longitude and latitude coordinates corresponding to the current preset simulation step time can be extracted from the dynamic trajectory data of the terminal device / interference signal source, and determined as the current position of the corresponding device, but it is not limited to the dynamic trajectory data representation method described in this embodiment.

[0122] Step S44, using the current position of the microwave relay device and the current position of the terminal device, obtaining the geographical connection and relative distance between the microwave relay device and the terminal device;

[0123] Step S45, using the current position of the interference signal source and the current position of the terminal device, obtaining the geographical connection and relative distance between the interference signal source and the terminal device;

[0124] Step S46, performing visibility analysis on the geographical connection between the microwave relay device and the terminal device, and the geographical connection between the interference signal source and the terminal device, respectively, based on the digital elevation map;

[0125] In order to determine the visibility between two devices, after determining the current position of the device, the geographical connection and relative distance between the two devices can be calculated by geometric calculation, and the visibility between the two devices can be determined based on the pre-configured digital elevation map. Among them, the digital elevation map (also called digital elevation model, Digital Elevation Model, referred to as DEM) can be obtained by digitally simulating the ground terrain (i.e., the digital expression of the terrain surface morphology) through limited terrain elevation data. The ground elevation can be represented in the form of a set of ordered numerical arrays to describe the spatial distribution of linear and nonlinear combinations of various geomorphic factors including elevation, such as slope, aspect, slope change rate and other factors. This application does not elaborate on the model construction method of DEM.

[0126] Therefore, the present application can determine on the digital elevation map whether there is any obstruction on the geographical connection between the current microwave relay device and the terminal device, that is, determine the visibility between the microwave relay device and the terminal device; similarly, determine whether there is any obstruction on the geographical connection between the current terminal device and the interference signal source, that is, determine the visibility between the terminal device and the interference signal source. The specific implementation process is not described in detail in this application.

[0127] Step S47, determining that the intervisibility analysis result is intervisibility, and obtaining the attenuation value and delay value of the corresponding signal within the current preset simulation step time according to the relative distance between the corresponding devices;

[0128] Step S48, using the attenuation value and the delay value, performing attenuation and delay processing on the corresponding downlink communication signal and / or the interference signal to obtain a corresponding simulated downlink communication signal and / or simulated interference signal;

[0129] Step S49, determining that the visibility analysis result is no visibility, processing the corresponding downlink communication signal and / or interference signal according to the background noise generation method to obtain a simulated downlink communication signal and / or simulated interference signal within the current preset simulation step time;

[0130] like Figure 5The flowchart shown in the figure determines the visibility between the microwave relay device and the terminal device according to the above method. If there is visibility, the attenuation value and delay value of the simulated downlink communication channel can be calculated based on the relative distance between the current microwave relay device and the terminal device, and the downlink communication signal transmitted by the downlink communication channel can be attenuated and delayed accordingly, and the corresponding simulated downlink communication signal is output after being obtained. If there is no visibility, the background noise signal is directly generated and output. After a delay of one simulation step time, the current position of the terminal device is updated again, and the above method is used for loop processing to realize the dynamic simulation of the downlink channel under the condition of terminal device position movement.

[0131] Similarly, if Figure 6 The flowchart shown in the figure determines the visibility between the terminal device and the interference signal source according to the above method. If the two devices have visibility, the attenuation value and delay value of the simulated interference channel can be calculated based on the relative distance between the two devices, and the interference signal transmitted by the interference channel can be attenuated and delayed accordingly to obtain the corresponding simulated interference signal and output; if there is no visibility, the background noise signal is directly generated and output. After a delay of one simulation step time, the current position of the terminal device and the interference signal source is updated again, and the above method is used for loop processing to realize the dynamic simulation of the interference channel under the condition of the relative position change of the terminal device and the interference signal source.

[0132] Step S410, obtaining a simulated injection angle of an interference signal generated by the interference signal source to the antenna of the terminal device within a preset simulation step time according to the respective position information of the terminal device and the interference signal source;

[0133] In the embodiment of the present application, the simulated injection angle includes a simulated injection azimuth angle A and a simulated injection elevation angle E. The corresponding simulated injection angle can be calculated according to but not limited to the following formula:

[0134]

[0135]

[0136] In the above formula, (B T ,L T ,H T ) can represent the latitude and longitude coordinates of the terminal device; (B J ,L J ,H J ) can represent the latitude and longitude coordinates of the interference signal source; arctan() represents the inverse tangent function; sin() represents the trigonometric sine function; and cos() represents the trigonometric cosine function. Each simulated injection angle obtained by the above injection angle simulation module can be transmitted to the receiving antenna directivity simulation module for subsequent processing.

[0137] Step S411, calling the antenna pattern function corresponding to the antenna system of the terminal device from the respective antenna pattern functions of the preset multiple antenna systems;

[0138] Step S412, obtaining the sidelobe gain value of the terminal device antenna according to the simulated injection angle using the retrieved antenna pattern function;

[0139] In an embodiment of the present application, the receiving antenna directivity simulation module can pre-store the antenna pattern functions corresponding to each of the multiple antenna systems. In this way, for the terminal device of the currently simulated downlink interference channel, the antenna pattern function corresponding to its antenna system can be selected; if it is determined that the antenna pattern function corresponding to the antenna system of the terminal device does not exist in the antenna pattern functions of the preset multiple antenna systems, the measured pattern gain point data for the terminal device antenna can be directly obtained, such as the pre-stored E-plane and H-plane pattern gain point data of the terminal device antenna. The present application does not describe in detail the actual measurement process of the pattern gain point data.

[0140] Afterwards, the sidelobe gain value of the terminal device antenna can be calculated based on the simulated injection angle calculated above and the retrieved antenna pattern function; if the pattern gain point data is obtained, the measured pattern gain point data can be fitted in three dimensions using, but not limited to, the fitting formula below to obtain the sidelobe gain value of the terminal device antenna:

[0141]

[0142] Among them, u in the above fitting formula is the phase function:

[0143]

[0144] It can be seen that E represents the simulated injection pitch angle; when the simulated injection azimuth angle A is 90° or 270°, u in the above fitting formula is 1. If the simulated injection azimuth angle A is not equal to 90° and 270°, G H (A) can represent the two-dimensional radiation pattern of the antenna H plane in the azimuth plane; G E (E) can represent the two-dimensional radiation pattern of the antenna E plane in the pitch plane. This application does not elaborate on the contents of these two two-dimensional radiation patterns.

[0145] Step S413, using the sidelobe gain value, performing gain processing on the simulated interference signal obtained within the same preset simulation step time;

[0146] In practical applications, combined with the injection angle acquisition method described above, after the simulated injection angle is updated as the position changes, the sidelobe gain value can be updated according to the above method, and then the currently obtained simulated interference signal is re-gained accordingly to output a new simulated interference signal.

[0147] Step S414, performing co-frequency combination on the processed simulated interference signal and the simulated downlink communication signal to obtain a downlink interference channel simulated signal of a currently preset simulation step time;

[0148] Step S415, sending the downlink interference channel simulation signal to the terminal device to demonstrate the simulated interference effect;

[0149] Step S416: Send the downlink interference channel simulation signal to the simulator control device, and the simulator control device performs interference analysis on the downlink interference channel simulation signal and outputs the obtained simulation interference effect evaluation result.

[0150] After the signal combiner combines the two input signals at the same frequency, they can be transmitted to the connected terminal device on the one hand, where the simulated interference effect can be observed; on the other hand, they can be transmitted to the simulator control device for interference analysis. The signal analysis software can perform signal simulation and interference effect evaluation, and output the obtained simulated interference effect evaluation results so that the antenna parameters can be adjusted accordingly, etc., to improve the downlink interference resistance of microwave communications.

[0151] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded and executed by a processor to implement the steps of the above-mentioned microwave communication downlink interference channel simulation method. The specific implementation process can refer to the description of the corresponding part of the above-mentioned embodiment, and this embodiment will not repeat it.

[0152] The embodiment of the present application also proposes a computer program product or a computer program, which includes a computer instruction, and the computer instruction is stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the method provided in various optional implementations of the microwave communication downlink interference channel simulation method. The specific implementation process can refer to the description of the corresponding embodiment above, and will not be repeated.

[0153] Finally, it should be noted that the various embodiments in this specification are described in a progressive or parallel manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. As for the systems and media disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0154] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design preconditions of the technical solution. Professional and technical personnel may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0155] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the core idea or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for simulating a microwave communication downlink interference channel, characterized in that: The method comprises: Obtain downlink communication signals and interference signals in microwave communication scenarios; According to the respective position information of the microwave relay device, the terminal device and the interference signal source in the microwave communication scenario, the visibility analysis is performed between the microwave relay device and the terminal device, and between the terminal device and the interference signal source; the position information is dynamically updated according to the preset simulation step time; According to the signal processing method corresponding to the obtained inter-visibility analysis result, respectively, the corresponding downlink communication signal and the interference signal are dynamically simulated to obtain corresponding simulated downlink communication signal and simulated interference signal; Processing the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information; Performing co-frequency combination on the processed simulated interference signal and the simulated downlink communication signal, and outputting the obtained downlink interference channel simulated signal of the currently preset simulation step time; The processing of the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and the preset antenna pattern information, includes: According to the respective position information of the terminal device and the interference signal source, a simulated injection angle of the interference signal generated by the interference signal source to the terminal device antenna within a corresponding preset simulation step time is obtained; the simulated injection angle includes a simulated injection azimuth angle and a simulated injection pitch angle; Retrieving the antenna pattern function corresponding to the antenna system of the terminal device from the respective antenna pattern functions of the preset multiple antenna systems; According to the simulated injection angle, using the retrieved antenna pattern function, a sidelobe gain value of the terminal device antenna is obtained; If it is determined that the antenna pattern function of each of the preset multiple antenna systems does not contain the antenna pattern function corresponding to the antenna system of the terminal device, obtaining the measured pattern gain point data for the antenna of the terminal device; Performing a three-dimensional fitting calculation on the measured directional pattern gain point data to obtain a sidelobe gain value of the terminal device antenna; Using the sidelobe gain value, performing gain processing on the simulated interference signal obtained within the same preset simulation step time; The method of performing dynamic simulation processing on the corresponding downlink communication signal and the interference signal according to the signal processing method corresponding to the obtained inter-visibility analysis result to obtain the corresponding simulated downlink communication signal and simulated interference signal includes: Determine that the obtained intervisibility analysis result is intervisibility, and obtain the attenuation value and delay value of the corresponding signal within the current preset simulation step time according to the relative distance between the corresponding devices; Using the attenuation value and the delay value, attenuate and delay the corresponding downlink communication signal and / or the interference signal to obtain a corresponding simulated downlink communication signal and / or simulated interference signal; Determine that the obtained visibility analysis result is no visibility, and process the corresponding downlink communication signal and / or the interference signal according to the background noise generation method to obtain a simulated downlink communication signal and / or a simulated interference signal within a current preset simulation step time.

2. The method according to claim 1, characterized in that The performing visibility analysis between the microwave relay device and the terminal device, and between the terminal device and the interference signal source, respectively, based on the respective position information of the microwave relay device, the terminal device, and the interference signal source in the microwave communication scenario, includes: receiving dynamic trajectory data of the terminal device, dynamic trajectory data of the interference signal source, and the current position of the microwave relay device in microwave communication with the terminal device acquired and fed back by the simulator control device; Extracting the current position of the terminal device from the dynamic trajectory data of the terminal device; and extracting the current position of the interference signal source from the dynamic trajectory data of the interference signal source; Using the current position of the microwave relay device and the current position of the terminal device, obtaining the geographical connection and relative distance between the microwave relay device and the terminal device; Using the current position of the interference signal source and the current position of the terminal device, obtaining a geographical connection and a relative distance between the interference signal source and the terminal device; According to the digital elevation map, the geographical connection between the microwave relay device and the terminal device, and the geographical connection between the interference signal source and the terminal device are respectively analyzed for visibility.

3. The method according to claim 1, characterized in that The obtaining of a downlink communication signal and an interference signal in a microwave communication scenario includes: Acquire a downlink communication signal sensed by a microwave receiving antenna in a microwave scenario; When it is determined that the microwave receiving antenna does not sense the downlink communication signal or the microwave receiving antenna does not exist in the microwave scene, triggering the analog signal source to run and obtaining the analog downlink communication signal generated by the analog signal source; Obtaining an interference signal generated by an external interference signal source in the microwave scenario; When it is determined that the external interference signal source does not exist or the interference signal generated by the external interference signal source is not received, the analog interference signal source is triggered to run and the analog interference signal generated by the analog interference signal source is obtained.

4. The method according to claim 1, characterized in that: The output of the downlink interference channel simulation signal of the current preset simulation step time includes: Sending the obtained downlink interference channel simulation signal of the current preset simulation step time to the terminal device to show the simulated interference effect; and / or, The obtained downlink interference channel simulation signal of the current preset simulation step time is sent to the simulator control device, and the simulator control device performs interference analysis on the downlink interference channel simulation signal and outputs the obtained simulation interference effect evaluation result.

5. A microwave communication downlink interference channel simulation system, characterized in that: The system comprises: Simulator control equipment, used to configure the relevant parameters for simulating the microwave communication downlink interference channel; A downlink interference simulator connected to the simulator control device, the downlink interference simulator comprising: A communication signal acquisition module, used to acquire downlink communication signals in a microwave communication scenario; An interference signal acquisition module, used to acquire interference signals in microwave communication scenarios; A communication channel dynamic simulation module is used to perform visibility analysis between the microwave relay device and the terminal device according to the respective position information of the microwave relay device and the terminal device in the microwave communication scenario, and dynamically simulate the downlink communication signal according to the signal processing method corresponding to the obtained visibility analysis result to obtain a simulated downlink communication signal; the position information is dynamically updated according to a preset simulation step time; The interference channel dynamic simulation module is used to perform visibility analysis between the terminal device and the interference signal source according to the respective position information of the terminal device and the interference signal source in the microwave communication scenario, and dynamically simulate the interference signal according to the signal processing method corresponding to the obtained visibility analysis result to obtain a simulated interference signal; the position information is dynamically updated according to a preset simulation step time; A receiving antenna parameter simulation module, used to process the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and preset antenna pattern information; A signal combiner, used to perform co-frequency combining of the processed analog interference signal and the analog downlink communication signal, and output the obtained downlink interference channel analog signal of the currently preset analog step time; The receiving antenna parameter simulation module processes the simulated interference signal obtained within the same preset simulation step time according to the respective position information of the terminal device and the interference signal source, and the preset antenna pattern information, including: According to the respective position information of the terminal device and the interference signal source, a simulated injection angle of the interference signal generated by the interference signal source to the terminal device antenna within a corresponding preset simulation step time is obtained; the simulated injection angle includes a simulated injection azimuth angle and a simulated injection pitch angle; Retrieving the antenna pattern function corresponding to the antenna system of the terminal device from the respective antenna pattern functions of the preset multiple antenna systems; According to the simulated injection angle, using the retrieved antenna pattern function, a sidelobe gain value of the terminal device antenna is obtained; If it is determined that the antenna pattern function of each of the preset multiple antenna systems does not contain the antenna pattern function corresponding to the antenna system of the terminal device, obtaining the measured pattern gain point data for the antenna of the terminal device; Performing a three-dimensional fitting calculation on the measured directional pattern gain point data to obtain a sidelobe gain value of the terminal device antenna; Using the sidelobe gain value, performing gain processing on the simulated interference signal obtained within the same preset simulation step time; According to the signal processing method corresponding to the obtained inter-visibility analysis result, respectively, the corresponding downlink communication signal and the interference signal are dynamically simulated to obtain the corresponding simulated downlink communication signal and simulated interference signal, including: Determine that the obtained intervisibility analysis result is intervisibility, and obtain the attenuation value and delay value of the corresponding signal within the current preset simulation step time according to the relative distance between the corresponding devices; Using the attenuation value and the delay value, attenuate and delay the corresponding downlink communication signal and / or the interference signal to obtain a corresponding simulated downlink communication signal and / or simulated interference signal; Determine that the obtained visibility analysis result is no visibility, and process the corresponding downlink communication signal and / or the interference signal according to the background noise generation method to obtain a simulated downlink communication signal and / or a simulated interference signal within a current preset simulation step time.

6. The system according to claim 5, characterized in that The receiving antenna parameter simulation module includes: An injection angle simulation module is used to obtain, according to the respective position information of the terminal device and the interference signal source, a simulated injection angle of the interference signal generated by the interference signal source to the antenna of the terminal device within a corresponding preset simulation step time; the simulated injection angle includes a simulated injection azimuth angle and a simulated injection pitch angle; The receiving antenna directivity simulation module is used to call the antenna pattern function corresponding to the antenna system of the terminal device from the antenna pattern functions of the preset multiple antenna systems, and obtain the sidelobe gain value of the terminal device antenna by using the called antenna pattern function according to the simulated injection angle, and use the sidelobe gain value to perform gain processing on the simulated interference signal obtained within the same preset simulation step time.

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