Electronic warfare unmanned aerial vehicle comprehensive radio frequency management method
Patent Information
- Application Number
- CN202511706320.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-03-13
Smart Images
Figure CN121665203A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electromagnetic compatibility technology, and specifically to an integrated radio frequency management method for electronic warfare unmanned aerial vehicles. Background Technology
[0002] The statements in this section are provided only as background information in connection with this disclosure and may not constitute prior art.
[0003] With the widespread application of drones in fields such as communication reconnaissance and electronic warfare, electronic warfare drones are playing an increasingly important role in modern information warfare. However, due to the extremely high transmission power and wide interference frequency bands of electronic warfare payloads, which almost cover all frequency bands used by the drone platform, and the insufficient isolation between antennas caused by the size of the drone platform, electronic warfare payloads will cause varying degrees of interference to all frequency-using equipment on the drone platform. The failure of some critical systems on the drone may lead to serious consequences. Therefore, comprehensive radio frequency management of electronic warfare drones and coordination of spectrum resources of drones and electronic warfare payloads can effectively improve the combat capability and survivability of electronic warfare drones.
[0004] Currently, there are three main solutions to electronic warfare aircraft frequency interference: one is spatial isolation, which improves the isolation between the electronic warfare payload transmitting antenna and the UAV platform receiving antenna. However, due to the size of the UAV platform, the antenna isolation is insufficient, resulting in poor effectiveness. Another is frequency domain isolation, which involves designing notch filters in the electronic warfare payload transmitting channel. However, due to the high power of the electronic warfare payload, the insertion loss of high-power notch filters is high, and notch filters may cause some functional performance indicators of the electronic warfare payload to fail to meet operational requirements. Finally, there is time domain isolation, which uses a lockout design to make the electronic warfare payload and the UAV platform compatible, but some critical systems on the aircraft need to operate continuously, such as the data link system and the navigation system. Summary of the Invention
[0005] The purpose of this invention is to address the frequency interference problem of electronic warfare drones. Based on project experience with drones equipped with communication electronic warfare systems and radar electronic warfare systems, this invention provides a comprehensive radio frequency management method for electronic warfare drones, which solves the frequency interference problem and achieves compatible operation between drones and electronic warfare payloads.
[0006] The technical solution of the present invention is as follows: A comprehensive radio frequency management method for electronic warfare unmanned aerial vehicles includes: Step S1: Analyze the working profile of the frequency-using equipment of electronic warfare UAVs. Based on the working principle of each frequency-using device of the electronic warfare UAV and the different flight stages of the UAV, analyze the working stages of each frequency-using device to form a working profile of the frequency-using equipment. Step S2: Conduct compatibility analysis and generate a frequency equipment usage configuration table. Based on the working profile of the frequency equipment, the electronic warfare payload interference frequency band, interference characteristics, electromagnetic simulation results, and compatibility test results, conduct compatibility analysis on onboard frequency conflicts and generate a frequency equipment usage configuration table for different flight phases. Step S3: Load the configuration table of the frequency-using equipment into the flight control computer, and the flight control computer monitors the working mode and working status of the data link system, electronic warfare payload and other frequency-using equipment through the serial port; Step S4: Management of takeoff and landing phases: When the electronic warfare UAV is in the takeoff or landing phase, the flight control computer automatically sends an interference silence command to the electronic warfare payload via serial port according to the usage configuration table, so that the electronic warfare payload is in a launch silence state. Step S5: Mission Phase Management: When the electronic warfare UAV is in the mission phase, the flight control computer, according to the usage configuration table, powers down the preset frequency-using equipment via the serial port, so that the electronic warfare payload and the frequency-using equipment work in a time-sharing manner. Step S6: Link and navigation configuration based on jamming frequency bands: The electronic warfare payload uses different radio frequency transmitting front-ends in different jamming frequency bands, and collects the operating current I of each jamming frequency band device and reports it to the flight control computer; the flight control computer determines whether the corresponding jamming frequency band has started working based on the operating current I, and executes the usage configuration corresponding to the jamming frequency band when the operating current I reaches the threshold, configures the data link system and navigation system, and transmits the configuration information to the ground station through the data link; Step S7: Emergency handling in case of data link abnormality: When the electronic warfare payload is conducting jamming transmission, if the flight control computer detects that a data link is interrupted or malfunctions, the flight control computer automatically sends a jamming silence command to the electronic warfare payload and restores the default configuration of the electronic warfare UAV.
[0007] Furthermore, the operating profile of the frequency-using equipment includes at least the following operating states of the equipment during different flight phases: Frequency-using device 1, frequency-using device 2, satellite navigation system, link 1, link 2, and electronic warfare payload.
[0008] Furthermore, the frequency-using equipment configuration table includes at least configurations for the takeoff phase, mission phase, and landing phase, wherein interference silence is applied to the electronic warfare payload during both the takeoff and landing phases.
[0009] Furthermore, during the mission phase, the flight control computer performs a power-off operation on frequency-using device 1 and frequency-using device 2 according to the usage configuration table to ensure that the electronic warfare payload and the frequency-using device operate in a time-sharing manner.
[0010] Furthermore, the electronic warfare payload corresponds to different radio frequency transmitting front-ends in different interference frequency bands, and collects the operating current I of each interference frequency band device to determine whether the interference frequency band is powered on and working.
[0011] Furthermore, the operating current I collected by the electronic warfare payload is uploaded to the flight control computer, which determines whether to execute the usage configuration of the corresponding interference frequency band based on whether the operating current I reaches the threshold.
[0012] Furthermore, the flight control computer monitors the real-time operating status of link 1 and link 2 via serial port, and configures at least one of link 1 and link 2 to be silent or enabled according to the configuration table.
[0013] Furthermore, when the flight control computer executes the usage configuration corresponding to the interference frequency band, it switches the navigation system mode, including switching between satellite / inertial integrated navigation and high-precision inertial navigation.
[0014] Furthermore, after a link interruption or failure occurs and emergency measures are taken, the flight control computer restores to the default configuration of the UAV platform's basic frequency configuration when no electronic warfare jamming is carried out.
[0015] Furthermore, after completing the configuration of the link, navigation switching, or other frequency-using devices, the flight control computer transmits the current usage configuration to the ground station via the data link so that the ground station can obtain real-time frequency usage status information.
[0016] Compared with existing technologies, the advantages of this invention are: 1. High efficiency: This invention can automatically set and handle electronic warfare payloads and other onboard radio frequency equipment in real time through the flight control computer, saving ground personnel's operation and time, and effectively improving efficiency.
[0017] 2. Innovation: By using a redundant design for the UAV data link system and navigation system, the switching between the data link system and navigation system is carried out in the form of a configuration table according to the different flight stages of the UAV and the different interference frequency bands of the electronic warfare payload. This avoids the degradation of the functional performance caused by adding a high-power notch filter to the electronic warfare payload.
[0018] 3. Operability: Based on project experience with UAVs carrying communication electronic warfare systems and radar electronic warfare systems, this invention summarizes and outlines a comprehensive radio frequency management method for UAVs carrying electronic warfare payloads, which has been implemented and verified on existing models. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in the embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.
[0020] Figure 1 This is a schematic diagram of the onboard interconnection of the flight control computer; Figure 2 This is a logic block diagram of the flight control computer performing integrated radio frequency management in this invention. Detailed Implementation
[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0022] The features and performance of the present invention will be further described in detail below with reference to embodiments.
[0023] Example 1 Electronic warfare payloads have extremely high transmission power and a very wide interference frequency band, covering almost all the frequency bands used by UAV platforms. Due to the size of the UAV platform, the isolation between antennas is insufficient. Electronic warfare payloads will cause varying degrees of interference to all frequency-using equipment on the UAV platform. The failure of some critical systems on the aircraft may lead to serious consequences. Therefore, it is necessary and essential to carry out comprehensive radio frequency management of electronic warfare UAVs, coordinate the spectrum resources of the entire aircraft, and ensure that the UAV platform and electronic warfare payloads work in compatibility.
[0024] This invention proposes a comprehensive radio frequency management method for electronic warfare unmanned aerial vehicles (UAVs). The invention is described clearly and completely below with reference to the accompanying drawings, and includes the following steps: Step S1: Analyze the operational profile of the frequency-using equipment of the electronic warfare UAV. Based on the working principles of each frequency-using device and the different flight stages of the UAV, analyze the operational stages of each frequency-using device to form an operational profile. That is, analyze the operational profile of each frequency-using device of the electronic warfare UAV based on its working principles and the flight stages of the UAV, as shown in the table below: Table 1. Operating Profile of Frequency Equipment for Electronic Warfare Unmanned Aerial Vehicles
[0025] Step S2: Conduct compatibility analysis and generate a frequency-use equipment configuration table. Based on the operating profile of the frequency-use equipment, the interference frequency bands and characteristics of electronic warfare payloads, electromagnetic simulation results, and compatibility test results, conduct a compatibility analysis of onboard frequency conflicts and generate a frequency-use equipment configuration table for different flight phases. Specifically, based on the operating profiles of different frequency-use equipment and the interference characteristics of electronic warfare payloads, combined with electromagnetic simulation and compatibility test results, conduct a compatibility analysis of onboard frequency conflicts or interference issues and generate a frequency-use equipment configuration table for different phases; as shown in the table below: Table 2. Frequency-Using Equipment Configuration Table at Different Stages
[0026] Step S3: Load the configuration table of the frequency-using devices into the flight control computer. The flight control computer then monitors the operating modes and status of the data link system, electronic warfare payload, and other frequency-using devices via serial port. It should be noted that in electronic warfare UAVs, the flight control computer is responsible for the control and management of the UAV platform and electronic warfare payload. The interconnection relationships of the flight control computer on the aircraft are as follows: Figure 1 As shown, the configuration table of frequency-using devices is loaded into the flight control computer. The flight control computer monitors the data link, electronic warfare payload, and other frequency-using devices on board via the RS422 serial port, and obtains the working mode and status of these devices in real time. Simultaneously, the flight control computer performs real-time integrated radio frequency management of the electronic warfare UAV based on the current flight phase of the UAV and the configuration table of frequency-using devices. Step S4: Management of Takeoff and Landing Phases: When the electronic warfare UAV is in the takeoff or landing phase, the flight control computer automatically sends an interference silence command to the electronic warfare payload via serial port according to the usage configuration table, putting the electronic warfare payload into a transmission silence state; that is, the logic block diagram of the flight control computer performing integrated radio frequency management is as follows: Figure 2 As shown, the flight control computer first loads the configuration tables for the frequency-using devices at different stages.
[0027] Step S5: Mission Phase Management: When the electronic warfare UAV is in the mission phase, the flight control computer, according to the usage configuration table, powers down the preset frequency-using equipment via the serial port, so that the electronic warfare payload and the frequency-using equipment work in a time-sharing manner. Step S6: Link and navigation configuration based on jamming frequency bands: The electronic warfare payload uses different radio frequency transmitting front-ends in different jamming frequency bands, and collects the operating current I of each jamming frequency band device and reports it to the flight control computer; the flight control computer determines whether the corresponding jamming frequency band has started working based on the operating current I, and executes the usage configuration corresponding to the jamming frequency band when the operating current I reaches the threshold, configures the data link system and navigation system, and transmits the configuration information to the ground station through the data link; Step S7: Emergency handling in case of data link abnormality: When the electronic warfare payload is conducting jamming transmission, if the flight control computer detects that a data link is interrupted or malfunctions, the flight control computer automatically sends a jamming silence command to the electronic warfare payload and restores the default configuration of the electronic warfare UAV.
[0028] In this embodiment, specifically, the operating profile of the frequency-using equipment includes at least the following operating states of the equipment during different flight phases: Frequency-using device 1, frequency-using device 2, satellite navigation system, link 1, link 2, and electronic warfare payload.
[0029] In this embodiment, specifically, the frequency-using equipment configuration table includes at least the configurations for the takeoff phase, mission phase, and landing phase, wherein the electronic warfare payload is jammed and silenced during both the takeoff and landing phases.
[0030] In this embodiment, specifically during the mission phase, the flight control computer performs a power-off operation on frequency-using device 1 and frequency-using device 2 according to the usage configuration table to ensure that the electronic warfare payload and the frequency-using device operate in a time-sharing manner.
[0031] In this embodiment, specifically, the electronic warfare payload corresponds to different radio frequency transmitting front-ends in different interference frequency bands, and the operating current I of each interference frequency band device is collected to determine whether the interference frequency band is powered on and working.
[0032] In this embodiment, specifically, the operating current I collected by the electronic warfare payload is uploaded to the flight control computer, and the flight control computer determines whether to execute the usage configuration of the corresponding interference frequency band based on whether the operating current I reaches a threshold.
[0033] In this embodiment, specifically, the flight control computer monitors the real-time working status of link 1 and link 2 through the serial port, and configures at least one of link 1 and link 2 to be silent or enabled according to the configuration table.
[0034] In this embodiment, specifically, when the flight control computer executes the usage configuration corresponding to the interference frequency band, it switches the navigation system mode, including switching between satellite / inertial integrated navigation and high-precision inertial navigation.
[0035] In this embodiment, specifically, after a link interruption or failure occurs and emergency measures are taken, the flight control computer restores to the default configuration of the UAV platform when no electronic warfare jamming is carried out.
[0036] In this embodiment, specifically, after completing the configuration of the link, navigation switching, or other frequency-using devices, the flight control computer transmits the current usage configuration to the ground station via the data link so that the ground station can obtain real-time frequency usage status information.
[0037] In this embodiment, it should be noted that the flight control computer performs the integrated radio frequency management logic as follows: (1) When the UAV is in the take-off or landing phase, the flight control computer automatically sends interference silence commands to the electronic warfare payload through the RS422 serial port according to the configuration table, forcing the electronic warfare payload to be in the launch silence state, so as to ensure the flight safety of the UAV platform during the take-off and landing phase. (2) When the UAV is in the mission phase, the flight control computer automatically powers down frequency-using device 1 and frequency-using device 2 through the RS422 serial port according to the configuration table to ensure that the electronic warfare payload and frequency-using device work in a time-sharing manner. The flight control computer receives the operating status of the electronic warfare payload through the RS422 serial port. Different RF transmitting front-ends are used for different interference frequency bands of the electronic warfare payload. The electronic warfare payload collects the operating current I of the devices in different interference frequency bands and reports it to the flight control computer. The flight control computer determines the start of operation of a certain interference frequency band based on the magnitude of the operating current. When the operating current I of a certain interference frequency band device reaches a certain threshold, the flight control computer will execute the usage configuration of that interference frequency band and perform real-time configuration of the data link system and navigation system. At the same time, the configuration information is transmitted to the ground station through the data link. (3) The ground operator carries out electronic warfare payload jamming and launch work according to the mission plan. The flight control computer monitors the working status of each link of the data link system in real time. When the electronic warfare payload is jamming and launching, if other links are interrupted or fail, the flight control computer will automatically take emergency measures, send jamming silence command to the electronic warfare payload through RS422 serial port in a timely manner, and restore the default configuration of the UAV to ensure the flight safety of the UAV platform. After the fault is cleared, the ground operator decides whether to continue the mission.
[0038] With this, the integrated radio frequency management of electronic warfare drones at different flight phases was completed.
[0039] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.
[0040] This background section is provided to generally present the context of the invention. The work of the currently named inventors, the work to the extent described in this background section, and aspects of this section that did not constitute prior art at the time of application are neither expressly nor impliedly acknowledged as prior art to the invention.
Claims
1. A comprehensive radio frequency management method for electronic warfare unmanned aerial vehicles, characterized in that, include: Step S1: Analyze the working profile of the frequency-using equipment of electronic warfare UAVs. Based on the working principle of each frequency-using device of the electronic warfare UAV and the different flight stages of the UAV, analyze the working stages of each frequency-using device to form a working profile of the frequency-using equipment. Step S2: Conduct compatibility analysis and generate a frequency equipment usage configuration table. Based on the working profile of the frequency equipment, the electronic warfare payload interference frequency band, interference characteristics, electromagnetic simulation results, and compatibility test results, conduct compatibility analysis on onboard frequency conflicts and generate a frequency equipment usage configuration table for different flight phases. Step S3: Load the configuration table of the frequency-using equipment into the flight control computer, and the flight control computer monitors the working mode and working status of the data link system, electronic warfare payload and other frequency-using equipment through the serial port; Step S4: Management of takeoff and landing phases: When the electronic warfare UAV is in the takeoff or landing phase, the flight control computer automatically sends an interference silence command to the electronic warfare payload via serial port according to the usage configuration table, so that the electronic warfare payload is in a launch silence state. Step S5: Mission Phase Management: When the electronic warfare UAV is in the mission phase, the flight control computer, according to the usage configuration table, powers down the preset frequency-using equipment via the serial port, so that the electronic warfare payload and the frequency-using equipment work in a time-sharing manner. Step S6: Link and navigation configuration based on jamming frequency bands: The electronic warfare payload uses different radio frequency transmitting front-ends in different jamming frequency bands, and collects the operating current I of each jamming frequency band device and reports it to the flight control computer; the flight control computer determines whether the corresponding jamming frequency band has started working based on the operating current I, and executes the usage configuration corresponding to the jamming frequency band when the operating current I reaches the threshold, configures the data link system and navigation system, and transmits the configuration information to the ground station through the data link; Step S7: Emergency handling in case of data link abnormality: When the electronic warfare payload is conducting jamming transmission, if the flight control computer detects that a data link is interrupted or malfunctions, the flight control computer automatically sends a jamming silence command to the electronic warfare payload and restores the default configuration of the electronic warfare UAV.
2. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 1, characterized in that, The operating profile of the frequency-using equipment includes the operating states of at least the following equipment during different flight phases: Frequency-using device 1, frequency-using device 2, satellite navigation system, link 1, link 2, and electronic warfare payload.
3. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 2, characterized in that, The frequency-using equipment configuration table includes at least the configurations for the takeoff phase, mission phase, and landing phase, wherein interference silence is performed on the electronic warfare payload during both the takeoff and landing phases.
4. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 3, characterized in that, During the mission phase, the flight control computer performs a power-off operation on frequency-using device 1 and frequency-using device 2 according to the usage configuration table to ensure that the electronic warfare payload and the frequency-using device operate in a time-sharing manner.
5. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 4, characterized in that, The electronic warfare payload corresponds to different radio frequency transmitting front-ends in different interference frequency bands, and collects the operating current I of each interference frequency band device to determine whether the interference frequency band is powered on and working.
6. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 5, characterized in that, The operating current I collected by the electronic warfare payload is uploaded to the flight control computer. The flight control computer determines whether to execute the usage configuration of the corresponding interference frequency band based on whether the operating current I reaches the threshold.
7. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 6, characterized in that, The flight control computer monitors the real-time working status of link 1 and link 2 via serial port, and configures at least one of link 1 and link 2 to be silent or enabled according to the configuration table.
8. The integrated radio frequency management method for electronic warfare unmanned aerial vehicles according to claim 7, characterized in that, When executing the usage configuration corresponding to the interference frequency band, the flight control computer switches the navigation system mode, including switching between satellite / inertial integrated navigation and high-precision inertial navigation.
9. A method for integrated radio frequency management of electronic warfare unmanned aerial vehicles according to claim 8, characterized in that, After a link interruption or failure occurs and emergency measures are taken, the flight control computer restores to the default configuration of the UAV platform when no electronic warfare jamming is carried out.
10. A method for integrated radio frequency management of electronic warfare unmanned aerial vehicles according to claim 9, characterized in that, After completing the configuration of the link, navigation switching, or other frequency-using devices, the flight control computer transmits the current configuration to the ground station via the data link so that the ground station can obtain real-time frequency usage status information.