Dynamic complex electromagnetic environment construction system and method

Abstract

The invention provides a dynamic complex electromagnetic environment construction system, and the system comprises an upper computer which is used for deploying aviation equipment which generates electromagnetic signals in a task scene, and carrying out the simulation through controlling the electromagnetic signal parameters of the aviation equipment, and generating situation information; the lower computer is used for acquiring the situation information, performing data analysis and mapping on the situation information to generate a data stream, acquiring an interrupt signal fed back by the control module, and sending the data stream to the control module at a preset time interval according to the interrupt signal; the control module is used for acquiring the data stream and converting the data stream into a control signal for controlling the baseband board and / or the radio frequency module; the baseband board is used for simulating a radar signal pattern of the corresponding radar in real time according to the control signal and converting the radar signal pattern into a corresponding intermediate frequency signal; and the radio frequency module is used for acquiring the control signal and the intermediate frequency signal, and generating a radio frequency signal containing various radar signals according to the control signal and the intermediate frequency signal so as to realize simulation of the dynamic complex electromagnetic environment.

Description

Technical Field

[0001] The present application belongs to the field of electromagnetic simulation technology, and in particular relates to a system and method for constructing a dynamic complex electromagnetic environment. Background Art

[0002] Multiple electromagnetic signals exist simultaneously in a certain area, which can refer to the air domain, time domain, frequency domain or power domain. These electromagnetic signals will have a certain impact on the use of electronic equipment. Such an electromagnetic environment is called a complex electromagnetic environment. The characteristics of a complex electromagnetic environment are that the number of signals in the electromagnetic environment is dense, the composition of elements is constantly changing, the signal itself is also dynamically changing, and the waveform is also quite complex, which is reflected in the time domain, frequency domain, air domain, and energy, and also has the propagation characteristics of the electromagnetic wave itself.

[0003] Aviation equipment systems are related to the safety of aircraft. At present, field electromagnetic environment tests are mostly used in the research and development and testing stages, that is, the aviation equipment systems are placed in a large number of real electronic information systems to simulate the real electromagnetic environment. However, with the increasing complexity of the electromagnetic environment, field electromagnetic environment tests require a lot of manpower and material resources. At the same time, it is very difficult to simulate environmental changes in real mission scenarios and verify the performance of aviation equipment systems in the field. It is basically impossible to use physical equipment to simulate the complex electromagnetic environment in real mission scenarios. Therefore, modeling and simulation methods are generally used to assist field electromagnetic environment tests to provide a dynamic and realistic electromagnetic environment for equipment testing.

[0004] At present, there are two forms of electromagnetic environment simulation: functional simulation that only simulates amplitude information, and signal level simulation that simulates a specific waveform, which not only has amplitude information but also phase information. Functional simulation calculates the mathematical model and outputs the amplitude of the mathematical model, which does not contain the parameters of the signal. It has good real-time performance and is more flexible in the signal processing process; signal level simulation needs to simulate the change process of the entire signal, obtain the signal through a relatively sophisticated mathematical model, and contains the parameter information in the signal. It is the signal superposition result in the electromagnetic environment at a certain point in space.

[0005] Although the above-mentioned electromagnetic environment simulation scheme can simulate the fidelity of the signal itself in the signal environment to a certain extent, it cannot reflect the dynamic change characteristics of the electromagnetic environment in the mission scenario. The changes in the electromagnetic environment are complex, which may be changes in the signal itself or changes in the equipment that generates electromagnetic waves.

[0006] Therefore, a method for constructing a dynamic and complex electromagnetic environment is needed to simulate a complex electromagnetic environment that changes dynamically in real time. Summary of the invention

[0007] The purpose of the present application is to provide a dynamic complex electromagnetic environment construction system to solve or alleviate at least one problem in the background technology.

[0008] The technical solution of this application is: a dynamic complex electromagnetic environment construction system, including:

[0009] The host computer is used to deploy the aviation equipment that generates electromagnetic signals in the mission scenario and to generate situation information by simulating and controlling the electromagnetic signal parameters of the aviation equipment;

[0010] The lower computer is used to obtain the situation information, perform data analysis and mapping on the situation information to generate a data stream, obtain an interrupt signal fed back by the control module, and send the data stream to the control module at a predetermined time interval according to the interrupt signal;

[0011] A control module, used to obtain the data stream and convert the data stream into a control signal for controlling the baseband board and / or the radio frequency module;

[0012] The baseband board is used to simulate the radar signal pattern of the corresponding radar in real time according to the control signal, and convert the radar signal pattern into a corresponding intermediate frequency signal;

[0013] The radio frequency module is used to obtain a control signal and an intermediate frequency signal, and generate a radio frequency signal containing multiple radar signals according to the control signal and the intermediate frequency signal to realize the simulation of a dynamic and complex electromagnetic environment.

[0014] In an optional implementation manner of the present application, the upper computer communicates with the lower computer via Ethernet.

[0015] In an optional implementation manner of the present application, the data stream includes frequency, pulse width, pulse repetition time, signal pattern, and amplitude and phase control.

[0016] In an optional implementation manner of the present application, the lower computer exchanges data with the control module via a PCI bus.

[0017] In an optional implementation manner of the present application, the baseband board and the radio frequency module exchange data with the control module through an IO interface.

[0018] In an optional implementation manner of the present application, the baseband board and the radio frequency module are connected via a radio frequency line to achieve transmission of intermediate frequency signals.

[0019] On the other hand, the technical solution provided by the present application is: a method for constructing a dynamic complex electromagnetic environment using any of the dynamic complex electromagnetic environment construction systems described above, comprising:

[0020] Step S10, deploying aviation equipment that generates electromagnetic signals in the mission scenario through the host computer, and controlling electromagnetic signal parameters of the aviation equipment through the host computer to simulate and generate situation information;

[0021] Step S20, obtaining the situation information through the lower computer and performing data parsing and mapping on the situation information to generate a data stream, the lower computer simultaneously obtaining an interrupt signal fed back by the control module, and sending the data stream to the control module at a predetermined time interval according to the interrupt signal;

[0022] Step S30, acquiring the data stream through the control module and converting the data stream into a control signal for controlling the baseband board and / or the radio frequency module;

[0023] Step S40, the baseband board simulates the radar signal pattern of the corresponding radar in real time according to the control signal, and converts the radar signal pattern into a corresponding intermediate frequency signal;

[0024] Step S50, obtaining a control signal and an intermediate frequency signal through a radio frequency module, and generating a radio frequency signal containing multiple radar signals according to the control signal and the intermediate frequency signal to achieve simulation of a dynamic and complex electromagnetic environment.

[0025] In an optional implementation manner of the present application, the host computer, the slave computer, the control module, the baseband board and / or the radio frequency module have a system self-test capability. After the baseband board or the radio frequency module performs self-test, the self-test information is fed back to the control module, the control module feeds back the self-test information to the slave computer, the slave computer feeds back the self-test information to the host computer, and finally the self-test information is displayed through the display interface of the host computer.

[0026] The dynamic complex electromagnetic environment construction system and method of the present application can realize the simulation of dynamic complex electromagnetic environments, improve the realism of the electromagnetic environment of aviation equipment in mission scenarios during electromagnetic environment tests, verify the performance of aviation equipment in future actual missions, and at the same time, compared with the deployment of a large number of real electronic information systems, it can greatly reduce the cost of electromagnetic environment testing of aviation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0028] Figure 1 This is a system composition diagram for constructing a dynamic and complex electromagnetic environment for this application.

[0029] Figure 2 This is a flow chart of the method for constructing a dynamic complex electromagnetic environment in this application.

[0030] Figure 3This is a timing diagram of the operation of multiple radar signals according to an embodiment of the present application.

[0031] Figure 4 This is a frequency domain diagram of a complex electromagnetic signal according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0033] In order to solve the problems raised in the background technology, the present application provides a dynamic complex electromagnetic environment construction system and method.

[0034] like Figure 1 As shown, the dynamic complex electromagnetic environment construction system 100 provided in the present application includes: a host computer 10, a slave computer 20, a control module 30, a baseband board 40 and a radio frequency module 50.

[0035] The host computer 10 is used to perform situation simulation of the mission scenario, plan and deploy various types of aviation equipment that generate electromagnetic signals in the mission scenario, edit and confirm the electromagnetic signal parameters of the deployed aviation equipment, and start simulation to generate situation information. The host computer 10 and the slave computer 20 are connected through a network, and the situation information generated by the host computer 10 is sent to the slave computer 20 through the network. Among them, the network connection method can include a wired or wireless network connection method in terms of physical form, or an Ethernet connection or a cellular network connection can be used in terms of the connection method.

[0036] The lower computer 20 receives the status information sent by the upper computer 10, parses and maps the status information to generate a data stream, which mainly includes information such as frequency, pulse width PW, pulse repetition time PRT, signal pattern, amplitude and phase control, etc. At the same time, the lower computer 20 is connected to the communication network of the control module 30. After receiving the interrupt signal sent by the control module 30, the lower computer 20 sends the data stream to the control module through the communication network at a predetermined time interval (for example, 1ms).

[0037] In a preferred embodiment of the present application, data communication is achieved between the lower computer 20 and the control module 30 via a PCI bus connection, thereby providing a high-performance, low-latency data path between the lower computer 20 and the control module 30 .

[0038] In this application, the lower computer 20 uses the VxWorks real-time operating system, which can process the situation information sent by the upper computer 10 in real time. Figure 3The figure shows a timing diagram of the operation of multiple radars in one embodiment of the present application. The lower computer 20 receives a pulse repetition interval (CPI) signal to form a main pulse, synthesizes the simulated multiple radar signals (F1, F2) to obtain a radar synthesis signal F, and finally forms a data stream based on the radar synthesis signal F, and sends the data stream to the control module 30 according to a predetermined time beat or interval.

[0039] The control module 30 receives and processes the data stream sent by the lower computer 20 in real time, and converts the data stream into a control signal for controlling the baseband board 40 and the radio frequency module 50. In the present application, the control module 30 is connected to the baseband board 40 and the radio frequency module 50 through an input and output (IO) interface.

[0040] The baseband board 40 receives the control signal sent by the control module 30, simulates the corresponding type of radar signal pattern in real time according to the control signal, generates an intermediate frequency signal simulating the corresponding type of radar signal pattern through digital-to-analog conversion, and outputs the intermediate frequency signal to the RF module 50 through RF communication. The baseband board 40 and the RF module 50 are connected through an RF cable to achieve RF communication.

[0041] The RF module 50 receives the control signal sent by the control module 30 and the intermediate frequency signal sent by the baseband board 40, converts the intermediate frequency signal to the corresponding frequency band in real time according to the control signal, and outputs the RF signal in real time. Because the data stream is updated in real time and contains multiple radar signals, a complex electromagnetic environment is formed.

[0042] like Figure 4 Shown is a complex electromagnetic environment signal generated in an embodiment of the present application.

[0043] In a preferred embodiment of the present application, the host computer 10, the slave computer 20, the control module 30, the baseband board 40 and / or the radio frequency module 50 all have system self-test capabilities. After the baseband board 40 or the radio frequency module 50 self-tests, the self-test information can be fed back to the control module 30 through the input and output interface. The control module 30 further feeds back the self-test information to the slave computer 20 through the PCI bus. The slave computer 20 feeds back the self-test information to the host computer 10 through Ethernet, and finally the self-test information is displayed through the display interface of the host computer 10.

[0044] In addition, the present application also provides a method for constructing a system based on the above-mentioned dynamic complex electromagnetic environment, comprising the following steps:

[0045] Step S10, deploying the aviation equipment that generates electromagnetic signals in the mission scenario through the host computer 10, and controlling the electromagnetic signal parameters of the aviation equipment through the host computer 10 to simulate and generate situation information;

[0046] Step S20, obtaining the situation information through the lower computer 20 and performing data analysis and mapping on the situation information to generate a data stream, the lower computer 20 simultaneously obtains an interrupt signal fed back by the control module 30, and sends the data stream to the control module at a predetermined time interval according to the interrupt signal;

[0047] Step S30, acquiring the data stream through the control module 30 and converting the data stream into a control signal for controlling the baseband board 40 and / or the radio frequency module 50;

[0048] Step S40, the baseband board 40 simulates the radar signal pattern of the corresponding radar in real time according to the control signal, and converts the radar signal pattern into a corresponding intermediate frequency signal;

[0049] Step S50, obtaining a control signal and an intermediate frequency signal through the radio frequency module 50, and generating a radio frequency signal containing multiple radar signals according to the control signal and the intermediate frequency signal to realize simulation of a dynamic and complex electromagnetic environment.

[0050] The dynamic complex electromagnetic environment construction system and method of the present application can realize the simulation of dynamic complex electromagnetic environments, improve the realism of the electromagnetic environment of aviation equipment in mission scenarios during electromagnetic environment tests, verify the performance of aviation equipment in future actual missions, and at the same time, compared with the deployment of a large number of real electronic information systems, it can greatly reduce the cost of electromagnetic environment testing of aviation equipment.

[0051] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A dynamic complex electromagnetic environment construction system, characterized in that: include: The host computer (10) is used to deploy the aviation equipment that generates electromagnetic signals in the mission scenario, and to generate situation information by simulating and controlling the electromagnetic signal parameters of the aviation equipment; The lower computer (20) is used to obtain the situation information, perform data analysis and mapping on the situation information to generate a data stream, obtain an interrupt signal fed back by the control module (30), and send the data stream to the control module at a predetermined time interval according to the interrupt signal; A control module (30) is used to obtain the data stream and convert the data stream into a control signal for controlling a baseband board (40) and / or a radio frequency module (50); A baseband board (40) is used to simulate the radar signal pattern of the corresponding radar in real time according to the control signal, and convert the radar signal pattern into a corresponding intermediate frequency signal; The radio frequency module (50) is used to obtain a control signal and an intermediate frequency signal, and to generate a radio frequency signal containing multiple radar signals according to the control signal and the intermediate frequency signal, so as to realize the simulation of a dynamic and complex electromagnetic environment.

2. The dynamic complex electromagnetic environment construction system according to claim 1, characterized in that: The upper computer (10) communicates with the lower computer (20) via Ethernet.

3. The dynamic complex electromagnetic environment construction system according to claim 1, characterized in that: The data stream includes frequency, pulse width, pulse repetition time, signal pattern, and amplitude and phase control.

4. The dynamic complex electromagnetic environment construction system according to claim 1, characterized in that: The lower computer (20) performs data exchange with the control module (30) via the PCI bus.

5. The dynamic complex electromagnetic environment construction system according to claim 1, characterized in that: The baseband board (40) and the radio frequency module (50) perform data exchange with the control module (30) via an IO interface.

6. The dynamic complex electromagnetic environment construction system according to claim 5, characterized in that: The baseband board (40) and the radio frequency module (50) are connected via a radio frequency line to achieve transmission of intermediate frequency signals.

7. A method for constructing a dynamic complex electromagnetic environment using the dynamic complex electromagnetic environment construction system according to any one of claims 1 to 6, characterized in that: include: Step S10, deploying aviation equipment that generates electromagnetic signals in the mission scenario through the host computer (10), and controlling electromagnetic signal parameters of the aviation equipment through the host computer (10) to simulate and generate situation information; Step S20, obtaining the situation information through the lower computer (20) and performing data analysis and mapping on the situation information to generate a data stream, the lower computer (20) simultaneously obtaining an interrupt signal fed back by the control module (30), and sending the data stream to the control module at a predetermined time interval according to the interrupt signal; Step S30, acquiring the data stream through the control module (30) and converting the data stream into a control signal for controlling the baseband board (40) and / or the radio frequency module (50); Step S40, the baseband board (40) simulates the radar signal pattern of the corresponding radar in real time according to the control signal, and converts the radar signal pattern into a corresponding intermediate frequency signal; Step S50, obtaining a control signal and an intermediate frequency signal through a radio frequency module (50), and generating a radio frequency signal containing multiple radar signals according to the control signal and the intermediate frequency signal, so as to realize simulation of a dynamic and complex electromagnetic environment.

8. The method according to claim 7, characterized in that The host computer (10), the slave computer (20), the control module (30), the baseband board (40) and / or the radio frequency module (50) have a system self-checking capability. After the baseband board (40) or the radio frequency module (50) performs a self-check, the self-checking information is fed back to the control module (30), the control module (30) feeds back the self-checking information to the slave computer (20), the slave computer (20) feeds back the self-checking information to the host computer (10), and finally the self-checking information is displayed through a display interface of the host computer (10).

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