Cooperative interference method based on multiple distributed jammers

Abstract

The invention provides a cooperative interference method based on multiple distributed jammers, and relates to the technical field of wireless. The method comprises the steps of determining a first jammer and a plurality of second jammers from to-be-selected jammers according to a distance relationship between the to-be-selected jammers and a target receiver, and determining an interference auxiliary area according to a relative azimuth angle and a distance between the first jammer and the target receiver, determining a third jammer from the plurality of second jammers according to the space coverage complementarity with the interference auxiliary area and the interference collaboration degree, building a first interference area according to the first jammer and the third jammer, and performing main lobe suppression interference on the target receiver through the first transmitting beam in the first interference area, and obtaining perception information of the first interference area on the target receiver, establishing a second interference area according to the perception information and the second interference area, and performing slave lobe suppression interference on the target receiver through the second transmitting beam in the second interference area. The objective of the invention is to improve the problem that an existing method is relatively weak in interference capability in a complex scene.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless technologies, and in particular, to a cooperative interference method based on multiple distributed jammers. Background Art

[0002] A jammer is an electronic device whose main function is to interfere with, shield, or disrupt the normal operation of other electronic systems by transmitting specific electromagnetic signals. It can affect the transmission or reception of signals such as communication, positioning, and detection, thereby playing roles such as protection, control, or testing. Jammers are commonly used in scenarios where specific frequency bands need to be managed or protected, and can automatically identify target signals and apply corresponding interference strategies, effectively improving the stability and anti-interference ability of the system.

[0003] Traditional interference methods mainly use a single jamming device for operation, and their interference effects and coverage are limited by the device performance and deployment methods, making it difficult to achieve dynamic regulation and efficient interference effects in the face of complex situations such as multiple signals and multiple environmental changes. Summary of the Invention

[0004] The embodiments of the present application provide a cooperative interference method based on multiple distributed jammers. The embodiments of the present application adopt the following technical solutions: In a first aspect, the embodiments of the present application provide a cooperative interference method based on multiple distributed jammers. The method includes: determining a first jammer and a plurality of second jammers from the candidate jammers according to the distance relationship between the candidate jammers and the target receiver; Determining an interference assistance area according to the relative azimuth angle and distance between the first jammer and the target receiver, and determining a third jammer from the plurality of second jammers according to the spatial coverage complementarity and interference cooperation degree with the interference assistance area; Constructing a first interference area according to the first jammer and the third jammer, and performing main lobe suppression interference on the target receiver in the first interference area through a first transmission beam, where the first transmission beam is a continuous transmission beam; Obtaining the perception information of the first interference area on the target receiver; Constructing a second interference area according to the perception information and the second jammers, and performing side lobe suppression interference on the target receiver in the second interference area through a second transmission beam, where the second transmission beam is a pulse transmission beam.

[0005] In a possible implementation manner of the first aspect, determining a first jammer and a plurality of second jammers from the candidate jammers according to the distance relationship between the candidate jammers and the target receiver includes: Determining the interference coverage rate of the candidate jammers on the target receiver according to the distance relationship between the candidate jammers and the target receiver; When the interference coverage rate is greater than or equal to a preset threshold, determine the candidate jammer as the first jammer; When the interference coverage rate is less than the preset threshold, determine the jammer with the maximum interference coverage rate among the candidate jammers as the first jammer, and determine the non-first jammers among the candidate jammers as the second jammers.

[0006] In a possible implementation manner of the first aspect, determining the interference assistance area according to the relative azimuth and distance between the first jammer and the target receiver includes: Determine the main axis direction of the interference assistance area according to the relative azimuth between the first jammer and the target receiver; Determine the interference effective radius of the interference assistance area according to the distance between the first jammer and the target receiver; Construct the interference assistance area with the main axis direction as the central axis and the interference effective radius as the reference radius.

[0007] In a possible implementation manner of the first aspect, characterized in that determining the third jammer from multiple second jammers according to the spatial coverage complementarity and interference efficiency synergy degree with the interference assistance area includes: Determine the spatial coverage overlap rate of each second jammer with the interference assistance area, and determine the first screening score according to the spatial coverage overlap rate; Determine the interference parameter matching degree of each second jammer with the first jammer, and determine the second screening score according to the interference parameter matching degree; Determine the comprehensive evaluation score of each second jammer according to the first screening score and the second screening score, and determine the second jammer with the maximum comprehensive evaluation score as the third jammer, and each interference assistance area corresponds to a third jammer.

[0008] In a possible implementation manner of the first aspect, constructing the first interference area according to the first jammer and the third jammer includes: Taking the first jammer as the main interference node, construct the core interference area aiming at the main lobe direction of the target receiver; Taking the third jammer as the auxiliary interference node, establish a compensation interference area in the weak signal area of the core interference area; According to the spatial distribution relationship between the core interference area and the compensation interference area, determine the beam control parameters and transmission power configuration parameters of the first jammer and the third jammer.

[0009] In a possible implementation manner of the first aspect, obtaining the perception information of the first interference area on the target receiver includes: Obtain the feedback response characteristics of the target receiver monitored by the first jammer and the third jammer; According to the feedback response characteristics, determine the dynamic anti-interference behavior characteristics of the target receiver in the first interference area; Match the dynamic anti-interference behavior characteristics with the pre-built anti-interference feature library of the target receiver to determine the sensing information.

[0010] In a possible implementation manner of the first aspect, there is an overlapping area between the second interference area and the first interference area, and the degree of overlap of the overlapping area is positively correlated with the anti-interference ability of the target receiver.

[0011] In a possible implementation manner of the first aspect, the method further includes: obtaining the anti-interference response characteristics of the target receiver to the first interference area and the second interference area, and dynamically adjusting the main lobe interference parameters of the first interference area and the distributed interference strategy of the second interference area according to the anti-interference response characteristics.

[0012] In a possible implementation manner of the first aspect, the method further includes: the first jammer sends a matching code to the third jammer and the second jammer in the second interference area; the first jammer and the third jammer generate a first transmission beam based on the matching code; the second jammer in the second interference area generates a second transmission beam based on the matching code.

[0013] In a second aspect, the present application further provides an electronic device, which includes: a memory and one or more processors, and the memory is coupled to the processor; wherein, computer program code is stored in the memory, and the computer program code includes computer instructions, and when the computer instructions are executed by the processor, the electronic device is caused to execute the method in any one of the possible design manners of the first aspect above.

[0014] In a third aspect, the present application provides a computer-readable storage medium, which includes computer instructions; when the computer instructions are run on an electronic device, the electronic device is caused to execute the method in the first aspect and any one of its possible design manners above.

[0015] In a fourth aspect, the present application provides a computer program product, and when the computer program product is run on an electronic device, the electronic device is caused to execute the method in the first aspect and any one of its possible design manners above.

[0016] A collaborative interference method based on multiple distributed jammers provided by the present application solves the natural disadvantages of single-point deployment in terms of interference range, direction control, and power distribution by introducing multiple interference devices for collaborative operation. By comprehensively considering the relative positions, spatial complementarity, and target dynamic characteristics among interference nodes, a main-auxiliary combined interference layout is constructed, which not only improves the spatial integrity of the interference area but also significantly enhances the suppression effect on highly resistant targets. At the same time, the system has a certain perception and feedback ability, can real-time perceive changes in the target receiving behavior and dynamically adjust the interference strategy accordingly, so that the interference mode is no longer passive execution but has a certain intelligent judgment and adaptive ability, and can maintain an efficient suppression state in a complex and changeable communication environment. In addition, by reasonably distinguishing continuous emission and pulse interference in the interference timing, the anti-frequency-hopping ability and power utilization efficiency of the system are effectively improved, thus constructing an interference system with fast response, complete space, powerful suppression, and flexible strategy. This method lays a foundation for the development of future multi-node intelligent interference systems while improving the stability and robustness of the system.

[0017] Among them, the technical effects of the second to fourth aspects refer to the technical effects of the first aspect and any of its embodiments, and will not be repeated here. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the steps of a collaborative interference method based on multiple distributed jammers provided by an embodiment of the present application; Figure 2 It is a schematic diagram of the positional relationship between a target receiver and a jammer provided by an embodiment of the present application; Figure 3 It is another schematic diagram of the positional relationship between a target receiver and a jammer provided by an embodiment of the present application. Detailed Embodiments

[0019] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of the present application, the singular forms "a", "one", "", "the above", "the", and "this" are also intended to include expressions such as "one or more", unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of the present application, "at least one" and "one or more" mean one or more than two (including two). The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0020] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0021] In the following, the terms "first", "second", etc. are used only for convenience of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more. For example, a plurality of processing units refers to two or more processing units.

[0022] In addition, in the embodiments of the present application, "upper", "lower", "left" and "right" are not limited to being defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms can be relative concepts, which are used for description and clarification relative to the components, and can change accordingly according to the change in the orientation of the components placed in the drawings. In the drawings, for the sake of clarity, the thickness of the layers and regions is exaggerated, and the size ratio relationship between the parts in the drawings does not reflect the actual size ratio relationship.

[0023] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, the term "electrical connection" can be a direct electrical connection or an indirect electrical connection through an intermediate medium.

[0024] In the embodiments of the present application, the term "module" is generally a functional structure divided according to logic, and the "module" can be implemented by pure hardware, or by a combination of software and hardware. In the embodiments of the present application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, B exists alone, and A and B exist at the same time.

[0025] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0026] A jammer is an electronic device with electromagnetic interference capabilities. It mainly emits electromagnetic signals with specific frequencies, powers, and modulation methods to intentionally interfere with, shield, or suppress other electronic systems. Its basic principle is to introduce interference signals stronger than the useful signals into the receiving path of the target system, making it unable to demodulate normally or obtain valid information. Jammers are widely used in scenarios such as communication countermeasures, spectrum management, signal suppression, security protection, and electronic testing. They can interfere with or suppress various electronic signals such as communication links, positioning systems, and radar detections, thereby achieving purposes such as information protection, mission interruption, electronic deception, or system evaluation.

[0027] However, most traditional jamming methods rely on a single jamming device for fixed-point deployment and operation. Their jamming effects are limited by the power, coverage radius, spectrum capabilities, and deployment angles of the devices. It is difficult to effectively meet the concurrent jamming requirements of multiple signal sources and multiple targets, unable to quickly respond to the dynamic changes of the signal environment and the challenges brought by the frequent frequency hopping or maneuvering of the target receiver. At the same time, there are also problems such as local area jamming coverage blind spots or jamming ability attenuation. Moreover, the single-device system has low redundancy and poor anti-destruction ability, making it difficult to build a jamming system with high robustness and dynamic regulation capabilities.

[0028] Based on this, the inventive concept of this application is proposed: By sharing information and collaborating on functions among multiple distributed jammers, a multi-level jamming area combining primary and secondary and dynamically reconstructing is constructed. It can flexibly adjust the jamming strategy and beam parameters according to the spatial position, behavior characteristics, and signal response of the target receiver, realizing high-precision and high-efficiency adaptive cooperative jamming, and effectively improving the response speed, jamming effect, and system robustness of the jamming system in complex environments.

[0029] Refer to Figure 1 , an embodiment of the present invention provides a cooperative jamming method based on multiple distributed jammers, which is applied to a host computer and specifically may include the following steps: S101: Determine a first jammer and multiple second jammers from the candidate jammers according to the distance relationship between the candidate jammers and the target receiver.

[0030] In this embodiment, the candidate jammers refer to multiple jamming devices deployed in the test area, with jamming capabilities and capable of participating in collaborative work. These jammers are pre-initialized and configured, with beam control, signal transmission, and a certain degree of information perception capabilities, and are in a standby or dispatchable state. The target receiver can refer to the receiving end of electronic devices such as communication, navigation, or radar that need to be jammed, with detectable signal characteristics and clear physical location information or estimable location range in space. By obtaining the spatial distance information between the candidate jammers and the target receiver, and combining the performance parameters and deployment locations of the jammers, select the jammer that is closer to the target and has the main jamming ability as the first jammer, and at the same time select multiple jammers that can participate in the auxiliary jamming task collaboratively as the second jammers, providing the basic conditions for constructing a multi-level jamming area subsequently. The specific steps can include: S1011: Determine the interference coverage rate of the candidate jammers for the target receiver according to the distance relationship between the candidate jammers and the target receiver; S1012: When the interference coverage rate is greater than or equal to the preset threshold, determine the candidate jammer as the first jammer; S1013: When the interference coverage rate is less than the preset threshold, determine the jammer with the maximum interference coverage rate among the candidate jammers as the first jammer, and determine the non-first jammers among the candidate jammers as the second jammers.

[0031] In the implementation of S1011 to S1013, the interference coverage rate can refer to the proportion of the area where the target receiver is located covered by the effective interference signals of the jammers, which can be used to quantify the actual interference ability of each jammer on the target receiver. As an example, obtain the spatial position information of the target receiver, which can be obtained through means such as external detection systems, historical trajectory prediction, or signal direction finding, to form a spatial description of the current or predicted position of the target receiver. On this basis, the system combines factors such as the power coverage range, transmission directivity, beam controllability, and environmental propagation loss of each candidate jammer. The power coverage range refers to the area where the interference signal reaches the effective interference threshold in space under a specific frequency band and transmission power of the jammer; the transmission directivity reflects the gain characteristics of the jammer antenna and determines the distribution of the interference signal in different spatial directions; the beam controllability indicates whether the jammer supports beamforming or adjusting the transmission direction to flexibly focus the interference signal; the environmental propagation loss considers the effects of obstacle occlusion, multipath effect, and atmospheric attenuation during signal propagation. Through ray propagation modeling and signal path loss analysis, calculate the effective interference area formed by each jammer at the spatial position of the target receiver, that is, the area range where the interference signal intensity exceeds the anti-jamming threshold of the target receiver.

[0032] After determining the target receiver, if the interference coverage rate of a candidate jammer on the target receiver is greater than or equal to a preset threshold, the candidate jammer can be directly selected to interfere with the target receiver without additional coordination with other jammers. As an example, refer to Figure 2 As shown, there is a target receiver D in the test area. The interference coverage rate of jammer A on the target receiver D is greater than or equal to the preset threshold. Therefore, the system only needs to dispatch jammer A to effectively interfere with the target receiver D, while jammers B and C do not need to participate in this interference task because their interference coverage rates do not meet the standard, effectively saving resources and avoiding interference conflicts.

[0033] If there is no candidate jammer with an interference coverage rate greater than or equal to the preset threshold on the target receiver, it means that the current single jammer cannot form an effective interference with sufficient intensity on the target receiver and it is difficult to achieve the expected interference suppression effect. Therefore, a method of coordinating multiple jammers is needed to comprehensively improve the interference coverage ability.

[0034] As an example, refer to Figure 3 As shown, there is a target receiver D in the test area. The interference coverage rates of jammers A, B, and C on the target receiver D are all less than the preset threshold. Among them, the interference coverage rate of jammer C is the highest. Therefore, the system can determine jammer C as the first jammer to undertake the main interference task, and at the same time determine jammers A and B as the second jammers to assist in constructing a joint interference area.

[0035] S102: Determine the interference assistance area according to the relative azimuth and distance between the first jammer and the target receiver, and determine the third jammer from multiple second jammers according to the spatial coverage complementarity and interference cooperation degree with the interference assistance area.

[0036] In this embodiment, the spatial coverage complementarity means that the interference range of the third jammer can cover the spatial blind area that the first jammer has not effectively covered in the interference assistance area, and the interference efficiency cooperation degree means that the cooperative interference gain formed by the interference parameters of the third jammer and the interference parameters of the first jammer exceeds the preset threshold. First, based on the relative spatial relationship between the first jammer and the target receiver, especially the azimuth and distance between the two, evaluate the main interference area that the first jammer can form on the target receiver. Under ideal conditions, the first jammer is mainly responsible for implementing strong interference on the main lobe direction of the target receiver. However, due to factors such as environmental occlusion, beam limitation, or distance attenuation, there may be spatial areas with interference signal coverage blind areas or insufficient interference intensity in certain directions or angles for the first jammer. This part of the area is the interference assistance area.

[0037] The determination of the interference assistance area is mainly to identify the positions where the first jammer has deficiencies in interference coverage, thereby providing a basis for subsequent multi-jammer cooperative interference. Subsequently, the system evaluates the spatial compensation ability of each of the multiple second jammers for the interference assistance area, that is, whether each jammer can effectively compensate for the interference blind area of the first jammer in space under the influence of factors such as its beam ability, directivity, distance, and environmental adaptability. In addition, the system also evaluates the interference cooperation degree between it and the first jammer, that is, whether the jammer has the capabilities of synchronous transmission, power adjustment, frequency coordination, and time-domain cooperation with the first jammer, to ensure that there is no mutual interference or interference interference when multiple jammers cooperate, so as to achieve interference superposition and suppression enhancement.

[0038] On this basis, the system selects the most suitable jammer from multiple second jammers to compensate for the interference assistance area and determines it as the third jammer, which will participate with the first jammer in constructing a cooperative interference area to improve the comprehensive interference effectiveness against the target receiver. The purpose of determining the third jammer is to construct a more robust main lobe suppression system through multi-point cooperative interference, and maintain an efficient and continuous interference ability in complex electromagnetic environments or when the target receiver has anti-jamming behaviors such as maneuvering and frequency hopping, to ensure the reliable execution of the interference mission.

[0039] And the steps to determine the interference assistance area can include: S1021: Determine the main axis direction of the interference assistance area according to the relative azimuth angle between the first jammer and the target receiver; S1022: Determine the effective interference radius of the interference assistance area according to the distance between the first jammer and the target receiver; S1023: Construct the interference assistance area with the main axis direction as the central axis and the effective interference radius as the reference radius.

[0040] In the implementation manners of S1021 to S1023, first, according to the relative azimuth angle between the first jammer and the target receiver, that is, the direction from the first jammer to the target receiver, the main axis direction of the interference assistance area is determined. This direction represents the main direction of the propagation path of the first interference signal and also serves as the central reference axis for constructing the assistance area, which is used to guide the subsequent construction of the area shape and spatial positioning. Secondly, based on the distance relationship between the first jammer and the target receiver, comprehensively considering the transmission power of the first jammer, the antenna directional gain, the signal attenuation model, and environmental factors (such as terrain occlusion, multipath effect, etc.), the effective action range of the interference signal in the target direction is estimated, so as to determine an interference effective radius. This radius can be regarded as the farthest distance for the first jammer to maintain the interference intensity to reach the effective suppression threshold in the current direction. Beyond this distance, the interference ability will decrease significantly, and it is difficult to generate continuous and effective interference on the target receiver. Finally, taking the determined main axis direction as the construction benchmark, regarding this direction as the central axis of the interference assistance area, and at the same time, based on the interference effective radius, a spatial area with a specific shape is extended and constructed on this axis, usually an elliptical, fan-shaped or directional hemispherical area, to form the interference assistance area. This area is used to identify the positions where the first jammer has insufficient interference ability or significant signal attenuation during the main lobe suppression process. For example, if the first jammer is located at the origin of the coordinate system and the target receiver is 1500 meters away in the northeast direction, the main axis direction is northeast. If the calculated interference effective radius is 1000 meters, the assistance area may be a fan-shaped area with the northeast direction as the central axis and a radius of 1000 meters. This area is the interference assistance space that needs to be compensated by other jammers. Through the above steps, the system can accurately identify the positions where the first jammer has insufficient interference ability, providing a clear and quantitative reference basis for subsequent selection of the third jammer with spatial coverage complementarity and interference coordination, so as to construct an interference system with dynamic regulation and multi-source coordination capabilities.

[0041] And the steps for determining the third jammer may include: S1024: Determine the spatial coverage overlap rate of each second jammer with the interference assistance area, and determine the first screening score according to the spatial coverage overlap rate; S1025: Determine the interference parameter matching degree of each second jammer with the first jammer, and determine the second screening score according to the interference parameter matching degree; S1026: Determine the comprehensive evaluation score of each second jammer according to the first screening score and the second screening score, and determine the second jammer with the largest comprehensive evaluation score as the third jammer. Each interference assistance area corresponds to a third jammer.

[0042] In the implementation manners of S1024 to S1026, by quantitatively evaluating each second jammer in terms of two dimensions: spatial position adaptability and interference ability coordination, the optimal cooperative interference node, that is, the third jammer, is selected therefrom to cooperate with the first jammer to jointly construct a stable and effective main lobe suppression interference system. Specifically, first, it is necessary to evaluate the geometric coverage between each second jammer and the already constructed interference assistance area in terms of spatial position, that is, the so-called spatial coverage overlap rate. This indicator is used to measure whether the interference signal of the second jammer can effectively act on the assistance area in space. If the overlap ratio between the beam coverage range of a certain second jammer and the interference assistance area is relatively high, it indicates that it has good compensation potential in terms of geometric position, and thus it is given a higher first screening score. Then, on the basis of completing the spatial position matching, further evaluate the coordination between each second jammer and the first jammer in terms of interference parameters. These parameters include but are not limited to transmission frequency, beam width, power level, signal modulation method, beam pointing control ability, and time synchronization ability, etc., to determine whether the two jammers can achieve consistent interference output at the physical layer and signal level. The higher the matching degree of these interference parameters, the easier it is for both parties to achieve cooperative transmission and synchronous suppression, and the stronger the interference effect. Therefore, the second screening score is determined according to the matching degree. Finally, the scores in terms of spatial coverage ability and interference parameter coordination are fused to form a comprehensive evaluation score, which is used to comprehensively measure the potential of the second jammer as the third jammer. After the system calculates the comprehensive evaluation scores of all candidate second jammers, the one with the highest score is selected as the third jammer corresponding to this interference assistance area, that is, the optimal cooperative node. For example, if there are second jammers A, B, and C in a certain assistance area, where the coincidence degree of the beam coverage of B with the assistance area is 85%, and its frequency and timing matching degrees with the first jammer are higher than the other two, then its comprehensive evaluation score is the highest and it is determined as the third jammer in this area. Through this evaluation mechanism, the third interference node that fits in space and matches in ability is accurately screened out from the candidate second interference nodes.

[0043] S103: Construct a first interference area according to the first jammer and the third jammer, and perform main lobe suppression interference on the target receiver through the first transmission beam in the first interference area.

[0044] In this embodiment, during the process of constructing the first interference area and implementing main lobe suppression interference, first, the first jammer serves as the master node. Based on the accurate detection results of the main lobe direction of the target receiver (which may include the azimuth angle α and the elevation angle β), combined with its own antenna beam width θ and transmission power P, a three-dimensional conical core interference area centered on the target main lobe direction is established. The third jammer serves as an auxiliary node and is distributed around the periphery of the core interference area. The adaptive beamforming technology is used to fill the signal weak areas formed by terrain occlusion or attenuation at the edge of the main lobe beam. The construction of its compensation interference area needs to meet the requirement of forming continuous coverage after field strength superposition with the core area. For example, in an urban environment, when there is a 30% coverage gap in the core area due to building occlusion, the third jammer needs to complete the pointing adjustment and power matching of the compensation beam within 300 ms. The main lobe suppression interference is achieved through the first transmission beam. This beam adopts a continuous wave interference pattern with polarization matching the target main lobe, the center frequency is accurately aligned with the target operating frequency point, and the interference effectiveness is maintained through closed-loop power control. When it is detected that the target receiver uses power boost anti-jamming, the first jammer can stepwise increase the transmission power from 50 W to 200 W within 100 ms. At the same time, the third jammer synchronously adjusts the modulation mode of the compensation beam, such as switching from pure noise interference to coherent forwarding interference, to form a composite interference effect of main and auxiliary coordination.

[0045] And constructing the first interference area according to the first jammer and the third jammer includes: S1031: Using the first jammer as the main interference node, construct a core interference area targeting the main lobe direction of the target receiver; S1032: Using the third jammer as the auxiliary interference node, establish a compensation interference area in the signal weak area of the core interference area; S1033: According to the spatial distribution relationship between the core interference area and the compensation interference area, determine the beam control parameters and transmission power configuration parameters of the first jammer and the third jammer.

[0046] In the implementation manners of S1031 to S1033, first, the main interference node establishes a directional core interference area based on the target azimuth information. This node forms a focused beam through a high-gain directional antenna to accurately cover the direction of the target main lobe, and its beam direction and width are dynamically calibrated according to real-time electronic reconnaissance data. The three-dimensional spatial boundary of the core area is naturally defined by the antenna radiation characteristics to ensure the formation of a stable high-intensity interference field in the main lobe radiation direction. The auxiliary interference nodes automatically identify the weak radiation areas in the core area through a distributed sensing network. The nodes can achieve spatio-temporal synchronization through a dedicated data link, so that the compensation area and the core area form a seamlessly connected composite interference space. Finally, the global parameter optimization is realized through a distributed decision-making system. The system establishes a closed-loop control mechanism based on interference effectiveness evaluation, and the main node coordinates each auxiliary node to dynamically adjust the radiation parameters. When the target spatial position or electromagnetic characteristics change, the system recalculates the optimal parameter combination through an intelligent algorithm to ensure that the deformation of the interference field is synchronized with the target dynamics.

[0047] In order to ensure communication security and avoid interference with each other, in a feasible implementation manner, the method further includes: The first jammer sends a matching code to the third jammer and the second jammer in the second interference area; The first jammer and the third jammer generate a first transmission beam based on the matching code; The second jammer in the second interference area generates a second transmission beam based on the matching code.

[0048] In this implementation manner, in order to ensure that multiple jammers do not interfere with each other during the collaborative work process, and at the same time ensure the communication regulation security and the unity of interference effectiveness of the overall interference system, in a feasible implementation manner, the method further includes: The first jammer, as the main interference node, sends a matching code to the third jammer and other second jammers in the second interference area as the control basis for beam coordination and interference scheduling. The matching code can be understood as a modulation control identifier with uniqueness and synchronization, which is used to coordinate the consistency of each interference node in aspects such as beam forming, frequency use, phase control, and timing cooperation. After receiving the matching code, the first jammer and the third jammer generate a first transmission beam based on this code, so as to ensure the directivity, phase consistency, and power synthesis effect of the main lobe suppression interference, and avoid the decline of interference effectiveness caused by inconsistent phases or frequency conflicts between multi-source interferences. At the same time, each second jammer in the second interference area also generates a second transmission beam based on the same matching code to achieve distributed interference on the escape path or the edge area, ensuring the overall coordination and non-interference operation of the interference network.

[0049] S104: Obtain the sensing information of the first interference area on the target receiver, construct a second interference area according to the sensing information and the second jammer, and perform sidelobe suppression interference on the target receiver in the second interference area through the second transmission beam.

[0050] In this embodiment, after the first jammer and the third jammer in the first interference zone interfere with the target receiver, the target's communication state change, spectrum behavior, power feedback or modulation response characteristics are used to extract its response mode to the interference behavior. For example, the current anti-interference strategy and vulnerability of the target receiver can be analyzed by monitoring the bit error rate change, frequency hopping frequency, beam redirection behavior, communication protocol adaptation action, etc. of the target return link. This type of perception information is timely and dynamic, and is the basic data for subsequent interference scheduling and strategy construction.

[0051] After acquiring the perception information, the system links the second jammer to build a "second interference zone" based on this information. The second interference zone is not a simple spatial supplement, but is laid out in combination with the current or predicted slave lobe receiving direction of the target receiver. For example, when it is perceived that the target avoids the main beam from the first interference zone and attempts to restore communication through the lateral channel, the system will give priority to selecting a second jammer node with beam transmission capability and coverage capability complementary to the first jammer in the direction of the target slave lobe, and establish a surround interference layout around the target from the flank, thereby forming a spatial suppression and encirclement situation. Subsequently, in the second interference zone, each second jammer generates a second transmission beam according to the matching code or strategy parameters sent by the first jammer, so as to achieve efficient interference to the target slave lobe from multiple directions.

[0052] The acquisition of the perception information of the first interference area to the target receiver includes: S1041: Acquire feedback response characteristics of a target receiver monitored by the first jammer and the third jammer; S1042: Determine, according to the feedback response characteristics, a dynamic anti-interference behavior characteristic of the target receiver in the first interference area; S1043: Pattern matching is performed between the dynamic anti-interference behavior characteristics and the pre-built target receiver anti-interference feature library to determine the perception information.

[0053] In the implementation manners of S1041 to S1043, the interfering nodes in the first interference area not only undertake the interference emission task, but also have a certain monitoring ability to collect the response behaviors of the target receiver under the action of interference. These feedback response characteristics may include, but are not limited to, behavioral indicators such as the communication frequency change of the target receiver, the transmission power adjustment, the modulation mode switching, the beam direction change, the increase in the data retransmission rate, or the abnormal control signaling. By analyzing the type, time sequence, intensity, and evolution trend of the feedback response characteristics, it is judged which anti-interference mechanism the target receiver adopts, for example, whether frequency hopping is enabled, whether to switch to a backup beam, whether to reduce the coding rate, or switch to a backup channel. This process can combine time window analysis and multi-dimensional feature modeling to extract the anti-interference behavior portrait of the target in the current interference environment. A set of anti-interference feature libraries of the target receiver is established in the system, covering typical anti-interference behavior models under various models, different algorithm strategies, and parameter configurations. By comparing and matching the currently monitored anti-interference behavior characteristics with the samples in the library, key information such as the type, intensity level, and response period of the anti-interference strategy currently used by the target can be identified. The matching result is the perception information, which is used to guide the construction and strategy coordination of the subsequent second interference area.

[0054] In a feasible implementation manner, there is an overlapping area between the second interference area and the first interference area, and the overlapping degree of the overlapping area is positively correlated with the anti-interference ability of the target receiver.

[0055] In this implementation manner, an overlapping area is designed between the second interference area and the first interference area, that is, there is a certain degree of overlap in their spatial ranges. The overlapping area is considered for improving the stability and suppression effect of the interference system. On the one hand, the existence of the overlapping area enhances the concentration and effectiveness of the interference signal in the main activity area of the target receiver, so that the target is jointly affected by multiple interfering sources in this area, making it more difficult to avoid the interference signal through frequency hopping, beamforming, or anti-interference algorithms. On the other hand, when the interference ability of any interfering source in the first interference area or the second interference area is weakened due to power fluctuation, spatial occlusion, or resource scheduling restrictions, the redundant interference mechanism in the overlapping area can achieve rapid compensation to avoid the generation of interference vacuum or blind area. Especially for a target receiver with strong anti-interference ability, relying solely on the interference signal in a single direction and from a single source may not be sufficient to break through its protection mechanism. However, forming an overlapping interference field jointly constructed by multiple interfering sources in the overlapping area can effectively enhance the suppression intensity, increase the spatial complexity and waveform diversity of the interference signal, thereby improving the suppression success rate of the target.

[0056] In a feasible implementation manner, the method further includes: obtaining the anti-interference response characteristics of the target receiver to the first interference area and the second interference area, and dynamically adjusting the main lobe interference parameters of the first interference area and the distributed interference strategy of the second interference area according to the anti-interference response characteristics.

[0057] In this embodiment, traditional interference methods are often statically configured, that is, once the interference parameters are set, they remain unchanged throughout the interference process. However, in the actual test environment, the target receiver usually has a certain anti-interference ability, and these abilities will be dynamically adjusted over time to respond to the interference behavior. If the interference system cannot perceive these changes in real time and continuously adopts a fixed strategy, it is very likely to cause interference failure, blind area expansion, or resource waste. By continuously monitoring the response characteristics of the target receiver (such as the degree of communication quality degradation, frequency hopping pattern, delay of re-establishing the link, etc.), the cooperative interference system can infer in real time whether the anti-interference strategy of the target is changing, and accordingly adjust the configuration of the interference area through closed-loop feedback. For example: when the anti-interference ability in the main lobe direction of the target increases, the directional power density can be increased by narrowing the beam; when the target shows a frequency hopping or movement trend, the system can pre-build the interference coverage of the second interference area at its possible landing points; when the suppression effect in the overlapping area of multiple interference areas weakens, the overlap degree can be increased or the transmission rhythm can be adjusted, etc.

[0058] In this application, the first interference area and the second interference area are respectively responsible for different interference tasks, and form a complementary interference effect through the difference in the transmission mode to achieve high-intensity, full-time-domain, and multi-level suppression interference on the target receiver. First of all, the first interference area is jointly constructed by the first jammer and the third jammer, and is mainly responsible for implementing continuous suppression interference in the main lobe direction of the target receiver. In order to achieve a stable high-intensity interference effect, the first transmission beam adopts a continuous transmission mode, that is, continuously transmits interference signals to the target within a period of time to form a stable electromagnetic suppression field. This mode is suitable for concentrated interference on the main receiving path of the target receiver, and can form continuous signal coverage in the direction of the main receiving beam, thereby interfering with the main communication link or radar receiving direction of the target and reducing its main channel signal processing ability. The second interference area cooperating with it is constructed by multiple second jammers according to the target dynamic perception information, and is mainly used for distributed interference on the side lobe direction or multi-path reflection receiving channel of the target receiver. Since these channels are dynamic and uncertain, the second interference area adopts a pulsed transmission beam, that is, transmits interference signals to the target area in an intermittent, high-power, and short-time-width manner. This pulsed interference mode can not only effectively cope with the target frequency hopping or evasion strategy, but also disrupt the synchronization and anti-interference algorithms in its receiving link, increasing its overall interference load. During the collaborative work process, the first interference area is responsible for constructing an interference barrier for the stable suppression main line, while the second interference area dynamically adjusts the interference strategy through the perception feedback information to achieve flexible changes in the interference direction, frequency, and timing. When the target receiver tries to avoid the main lobe interference and turns to side lobe reception, frequency hopping, or short-time communication, the second interference area can quickly respond and use pulsed interference to accurately insert, thereby forming multiple suppressions in time and space. This collaborative relationship effectively makes up for the deficiencies of a single interference method in terms of coverage breadth, response sensitivity, and suppression continuity, enabling the system to still have strong interference adaptability and suppression effect in a multi-target and multi-changing environment. Therefore, through the complementarity of the first transmission beam and the second transmission beam in the transmission mechanism and interference strategy, this application constructs a master-slave collaborative, continuous-pulse alternating interference system, greatly improving the effectiveness and robustness of the overall interference and meeting the interference task requirements in a high-complexity environment.

[0059] In this embodiment, the embodiment of the present application further provides an electronic device, which may include: a memory and one or more processors. The memory and the processor are coupled. The memory is used to store computer program code, and the computer program code includes computer instructions. When the processor executes the computer instructions, the electronic device can execute each function or step in the above method embodiment.

[0060] This embodiment also provides a computer-readable storage medium storing computer instructions, which, when running on an electronic device, cause the electronic device to execute each function or step in the above method embodiment.

[0061] This embodiment also provides a computer program product, which, when running on a computer, causes the computer to execute each function or step in the above method embodiment.

[0062] Among them, the electronic device, computer-readable storage medium, and computer program product provided in this embodiment are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be elaborated here.

[0063] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware, or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable systems. The computer program or instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server or data center containing one or more collections of available media. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0064] It should be understood that in various embodiments of the present application, the sequence numbers of the above processes do not mean the order of execution. The execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0065] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0066] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, systems, and units can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0067] In several embodiments provided in this application, it should be understood that the disclosed systems, systems, and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of systems or units can be electrical, mechanical, or other forms.

[0068] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, the functional units in each embodiment of this application can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0070] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0071] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A cooperative jamming method based on multiple distributed jammers, characterized in that The method includes: Determining a first jammer and a plurality of second jammers from the candidate jammers according to the distance relationship between the candidate jammers and the target receiver; Determining an interference assistance area according to the relative azimuth and distance between the first jammer and the target receiver, and determining a third jammer from the plurality of second jammers according to the spatial coverage complementarity and interference cooperation degree with the interference assistance area; Constructing a first interference area according to the first jammer and the third jammer, and performing main lobe suppression interference on the target receiver through a first transmission beam in the first interference area, where the first transmission beam is a continuous transmission beam; Obtaining the sensing information of the first interference area on the target receiver, constructing a second interference area according to the sensing information and the second jammers, and performing sidelobe suppression interference on the target receiver through a second transmission beam in the second interference area, where the second transmission beam is a pulsed transmission beam.

2. The collaborative interference method based on multiple distributed jammers according to claim 1, characterized in that, The determining a first jammer and a plurality of second jammers from the candidate jammers according to the distance relationship between the candidate jammers and the target receiver includes: Determining the interference coverage rate of the candidate jammers on the target receiver according to the distance relationship between the candidate jammers and the target receiver; When the interference coverage rate is greater than or equal to a preset threshold, determining the candidate jammer as the first jammer; When the interference coverage rate is less than the preset threshold, determining the jammer with the maximum interference coverage rate among the candidate jammers as the first jammer, and determining the non-first jammers among the candidate jammers as the second jammers.

3. A collaborative interference method based on multiple distributed jammers according to claim 1, characterized in that, The determining the interference assistance area according to the relative azimuth and distance between the first jammer and the target receiver includes: Determining the main axis direction of the interference assistance area according to the relative azimuth between the first jammer and the target receiver; Determining the interference effective radius of the interference assistance area according to the distance between the first jammer and the target receiver; Constructing the interference assistance area with the main axis direction as the central axis and the interference effective radius as the reference radius.

4. A collaborative interference method based on multiple distributed jammers according to claim 1, characterized in that The determining a third jammer from the plurality of second jammers according to the spatial coverage complementarity and interference cooperation degree with the interference assistance area includes: Determining the spatial coverage overlap rate of each second jammer with the interference assistance area, and determining a first screening score according to the spatial coverage overlap rate; Determining the interference parameter matching degree of each second jammer with the first jammer, and determining a second screening score according to the interference parameter matching degree; Determining the comprehensive evaluation score of each second jammer according to the first screening score and the second screening score, and determining the second jammer with the maximum comprehensive evaluation score as the third jammer, where each interference assistance area corresponds to one third jammer.

5. A collaborative interference method based on multiple distributed jammers according to claim 1, characterized in that, The constructing a first interference area according to the first jammer and the third jammer includes: Constructing a core interference area targeting the main lobe direction of the target receiver with the first jammer as the main interference node; Taking the third jammer as an auxiliary interference node and establishing a compensation interference area in the signal weak area of the core interference area; Determine the beam control parameters and transmit power configuration parameters of the first jammer and the third jammer according to the spatial distribution relationship between the core interference area and the compensation interference area.

6. The collaborative interference method based on multiple distributed jammers according to claim 1, wherein, The obtaining of the perception information of the first interference area on the target receiver includes: Obtain the feedback response characteristics of the target receiver monitored by the first jammer and the third jammer; Determine the dynamic anti-jamming behavior characteristics of the target receiver in the first interference area according to the feedback response characteristics; Match the dynamic anti-jamming behavior characteristics with a pre-constructed anti-jamming feature library of the target receiver to determine the perception information.

7. The collaborative jamming method based on multiple distributed jammers according to claim 1, wherein There is an overlapping area between the second interference area and the first interference area, and the overlapping degree of the overlapping area is positively correlated with the anti-jamming ability of the target receiver.

8. A collaborative interference method based on multiple distributed jammers according to claim 1, characterized in that, The method further includes: Obtain the anti-jamming response characteristics of the target receiver to the first interference area and the second interference area, Dynamically adjust the main lobe interference parameters of the first interference area and the distributed jamming strategy of the second interference area according to the anti-jamming response characteristics.

9. A collaborative interference method based on multiple distributed jammers according to claim 1, characterized in that, The method further includes: The first jammer sends a matching code to the third jammer and the second jammer in the second interference area; The first jammer and the third jammer generate the first transmission beam based on the matching code; The second jammer in the second interference area generates the second transmission beam based on the matching code.

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