Interference strategy response method for fast matching of multiple radiation source signals
By performing multi-dimensional matching of frequency, pulse width, and multiple cycles on signals from multiple radiation sources, the problem of indistinguishable signals from radiation sources with high signal similarity in existing technologies is solved, and a fast and accurate response to interference strategies is achieved.
Patent Information
- Application Number
- CN202511040886.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2025-10-31
AI Technical Summary
Existing interference signal envelope matching techniques rely solely on single-pulse radiation source information, making it impossible to distinguish radiation source signals with high signal similarity, resulting in low matching accuracy.
By receiving signals from multiple radiation sources, the pulse descriptor of each radiation source signal is obtained, including frequency, pulse width, and multiple cycles. Multi-dimensional matching is then performed, and the matching is confirmed after link establishment to ensure that radiation source signals with high signal similarity can be distinguished and processed.
It improves the accuracy of multi-radiation source signal matching, reduces interference to one's own signal, and has a fast matching speed and high system stability.
Smart Images
Figure CN120871044A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electronic warfare technology, and in particular to a method for responding to jamming strategies by rapidly matching signals from multiple radiation sources. Background Technology
[0002] In electronic warfare systems, radar reconnaissance and jamming equipment typically uses broadband reception. Therefore, during normal operation, the equipment generally receives signals from multiple radiation sources, requiring different jamming strategies to be employed for different sources. Rapidly matching signals from different radiation sources is a key technology for multi-target radar jamming. Existing jamming signal envelope matching techniques rely solely on single-pulse radiation source information, matching only the intrapulse information frequency and pulse width of the radiation source information. However, if two signals have the same pulse width and frequency, it is impossible to distinguish radiation source signals with high signal similarity. Summary of the Invention
[0003] The main objective of this invention is to provide a fast interference strategy response method for matching signals from multiple radiation sources. This method aims to solve the problem that existing interference signal envelope matching techniques only match the intra-pulse information frequency and pulse width of radiation source information. When the pulse width and frequency of two signals are the same, it is impossible to distinguish radiation source signals with high signal similarity.
[0004] To achieve the above objectives, this invention proposes a method for responding to interference strategies involving fast matching of signals from multiple radiation sources. This method includes: Receive signals from multiple radiation sources and acquire a pulse descriptor for each radiation source signal, wherein the pulse descriptor includes frequency, pulse width, and multiple cycles; The pulse descriptor of each radiation source signal is matched simultaneously, and the link is established if the match is successful. After the link is established, the pulse descriptors at multiple PRI times are matched and confirmed. If the matching and confirmation are successful, the link is maintained, and the interference strategy is implemented to respond to the radiation source signal.
[0005] In one embodiment, the specific steps for simultaneously matching the pulse descriptor of each radiation source signal, and completing the link establishment upon successful matching, are as follows: First, the pulse width and frequency of the radiation source signal are matched; Next, the recurrence intervals of the radiation source signal are matched. If the matching is successful, the link establishment is completed.
[0006] In one embodiment, the interference strategy response method for fast matching of multi-radiation source signals further includes the following steps: Once a link to one of the radiation source signals is established, the radiation source signal is removed, and the remaining radiation source signals are re-linked.
[0007] In one embodiment, the interference strategy response method for fast matching of multi-radiation source signals further includes the following steps: After the link is established, the pulse descriptors at multiple PRI times are matched and confirmed. If the matching and confirmation fails, the link is lost.
[0008] In one embodiment, the specific steps for obtaining the pulse descriptor of each radiation source signal are as follows: Signal sorting is performed on the multiple radiation source signals to obtain pulse descriptor information for each radiation source signal.
[0009] This invention's technical solution involves receiving signals from multiple radiation sources using radar reconnaissance and jamming equipment, and then sorting these signals to obtain a pulse descriptor for each source. The pulse descriptor includes frequency, pulse width, and multiple cycles. Next, the pulse descriptors of each radiation source signal are simultaneously matched; successful matching establishes a link. Then, the pulse descriptors at multiple PRI times after link establishment are matched and confirmed. Successful confirmation maintains the link, and an jamming strategy is implemented to respond to the radiation source signal. Otherwise, unsuccessful matching results in link loss. This invention performs multi-dimensional matching of pulse descriptors to distinguish radiation source signals with high signal similarity, improving matching accuracy. Matching can be completed immediately after signal pulse measurement, resulting in fast matching speed and reduced interference to friendly signals. Attached Figure Description
[0010] Figure 1 This is an overall flowchart of the interference strategy response method for fast matching of multi-radiation source signals of the present invention; Figure 2 This is a schematic diagram of the multi-radiation source signal link establishment process of the interference strategy response method for fast matching of multi-radiation source signals of the present invention. Figure 3 This is a schematic diagram of the single-radiation-source signal link establishment process of the interference strategy response method for fast matching of multi-radiation-source signals of the present invention. Figure 4 This is a schematic diagram of the pulse repetition period of the interference strategy response method for fast matching of multi-radiation source signals according to the present invention. Figure 5 This is a multi-radiation source signal diagram of an embodiment of the interference strategy response method for fast matching of multi-radiation source signals according to the present invention; Figure 6 This is a multi-source envelope diagram of an embodiment of the interference strategy response method for fast matching of multi-source signals according to the present invention; Figure 7 This is a single-target link establishment matching diagram of the interference strategy response method for fast matching of multi-radiation source signals in this invention; Figure 8This is the first set of radiation source signal link establishment matching diagrams for the dual-target link establishment of the interference strategy response method for fast matching of multi-radiation source signals in this invention. Figure 9 This is the second set of radiation source signal link establishment matching diagrams for the dual-target link establishment of the interference strategy response method for fast matching of multi-radiation source signals in this invention. Figure 10 This is the first set of radiation source signal link establishment and matching diagrams for the four-target link establishment of the interference strategy response method for fast matching of multi-radiation source signals in this invention. Figure 11 This is the second set of radiation source signal link establishment and matching diagrams for the four-target link establishment of the interference strategy response method for fast matching of multi-radiation source signals in this invention. Figure 12 This is the third set of radiation source signal link establishment matching diagrams for the four-target link establishment of the interference strategy response method for fast matching of multi-radiation source signals in this invention. Figure 13 This is the fourth set of radiation source signal link establishment matching diagrams for the four-target link establishment of the interference strategy response method for fast matching of multi-radiation source signals in this invention. Detailed Implementation
[0011] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0012] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0013] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0014] In the description of this invention, it should be understood that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0015] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0016] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0017] Because existing interference signal envelope matching techniques rely solely on single-pulse radiation source information, that is, they only match the intrapulse information frequency and pulse width of the radiation source information. However, if the pulse width and frequency of the two signals are the same, it is impossible to distinguish radiation source signals with high signal similarity.
[0018] To address the aforementioned problems, this invention proposes an interference strategy response method for fast matching of signals from multiple radiation sources. The specific embodiments of this invention will be described in detail below with reference to the accompanying drawings.
[0019] like Figure 1-13 As shown, the interference strategy response method for fast matching of signals from multiple radiation sources includes the following steps: Receive signals from multiple radiation sources and acquire a pulse descriptor for each radiation source signal, wherein the pulse descriptor includes frequency, pulse width, and multiple cycles; The pulse descriptor of each radiation source signal is matched simultaneously, and the link is established if the match is successful. After the link is established, the pulse descriptors at multiple PRI times are matched and confirmed. If the matching and confirmation are successful, the link is maintained, and the interference strategy is implemented to respond to the radiation source signal.
[0020] In one embodiment, the specific steps for simultaneously matching the pulse descriptor of each radiation source signal, and completing the link establishment upon successful matching, are as follows: First, the pulse width and frequency of the radiation source signal are matched; Next, the recurrence intervals of the radiation source signal are matched. If the matching is successful, the link establishment is completed.
[0021] In one embodiment, the interference strategy response method for fast matching of multi-radiation source signals further includes the following steps: Once a link to one of the radiation source signals is established, the radiation source signal is removed, and the remaining radiation source signals are re-linked.
[0022] In one embodiment, the interference strategy response method for fast matching of multi-radiation source signals further includes the following steps: After the link is established, the pulse descriptors at multiple PRI times are matched and confirmed. If the matching and confirmation fails, the link is lost.
[0023] In one embodiment, the specific steps for obtaining the pulse descriptor of each radiation source signal are as follows: Signal sorting is performed on the multiple radiation source signals to obtain pulse descriptor information for each radiation source signal.
[0024] This invention provides a method for fast matching of multiple radiation source signals to respond to interference strategies. It receives signals from multiple radiation sources using radar reconnaissance and jamming equipment, and performs signal sorting to obtain a pulse descriptor for each signal. The pulse descriptor includes frequency, pulse width, and multiple cycles. Then, the pulse descriptors of each signal are simultaneously matched; successful matching establishes a link. Next, the pulse descriptors at multiple PRI times after link establishment are matched for confirmation. Successful confirmation maintains the link, and an interference strategy response is initiated for the radiation source signal. Otherwise, unsuccessful matching results in link loss. This invention performs multi-dimensional matching of pulse descriptors to distinguish radiation source signals with high signal similarity, improving matching accuracy. Matching can be completed immediately after signal pulse measurement, resulting in fast matching speed and minimizing interference to friendly signals.
[0025] Figure 2 For the link establishment process of multiple radiation source signals, the pulse signal streams between radiation sources are serial. When a radiation source signal completes link establishment, the envelope information is removed from the saturation pulse, and the link establishment of the next radiation source signal continues. When a single radiation source information completes link establishment, an interference strategy can be implemented for that radiation source information to generate an interference signal.
[0026] In this embodiment, the radiation source signal Where A is the signal amplitude, Pw is the signal pulse width, fc is the signal center frequency, and K is the signal frequency modulation slope; for example Figure 4 As shown, Pri is the pulse repetition period of the two signals, that is, the inter-pulse information of the signals is the pulse repetition period of the signals.
[0027] In this embodiment, the link establishment process for a single radiation source signal is as follows: Figure 3 As shown, the link establishment period is divided into initialization state, link establishment period, link establishment holding period, and link establishment loss period. The specific link establishment process is as follows: First, obtain the information of the selected radiation sources, including the radiation source repetition, pulse width, and frequency; then, match the intra-pulse information of the radiation source signals, i.e., frequency matching and pulse width matching; then, match the pulse repetition period of the radiation source signals. If the pulse repetition period matching is successful, the link establishment is completed; after the link establishment is completed, the pulses at N PRI times are matched and confirmed. If the N radiation source signals are matched successfully, the link establishment is maintained; otherwise, the link establishment is lost. It can be understood that this embodiment performs multi-dimensional matching based on the pulse descriptors of the selected known radiation source signals to improve matching accuracy and establish links for multiple radiation source signals; it matches and confirms the signals arriving after the link establishment is completed. Although radiation source signals are occasionally lost, stable signal tracking can still be maintained; moreover, link establishment is performed on multiple radiation source signals simultaneously, and signals after successful link establishment are also extracted, and the remaining signals are re-linked, achieving matching as soon as the signal pulse measurement is completed, resulting in fast matching speed and reducing interference to one's own signal.
[0028] In practical applications, due to counting errors in the FPGA during pulse descriptor word matching, some redundancy needs to be reserved during pulse width matching and recycle matching; among them, the pulse width matching flag... Recurrence matching marker Frequency matching flag .
[0029] This invention performs link matching on four groups of radiation source signals, with each pair of signals exhibiting distinct characteristics: the first and second groups have the same signal frequency, same pulse width, and different repeated cycles; the second and third groups have the same signal frequency, different pulse width, and the same repeated cycles; and the first and fourth groups have different signal frequencies, the same pulse width, and the same repeated cycles. Specific parameters for the four groups of radiation source signals are shown in the table below.
[0030] For the first group of radiation source signals, establish a link for single radiation source signals, such as... Figure 7 As shown, the envelope signal frequency Fc is 1.8 GHz, the signal pulse width is 1 μs, and the pulse repetition period is 20 μs. The simulation design observes the signal link establishment state under short-term and long-term signal loss. After successful signal link establishment, the signal can be stably tracked. After signal loss, the signal link is re-established. The parameter descriptions are shown in the table below:
[0031] Link establishment is performed for the first and second groups of radiation source signals, such as... Figure 8 and Figure 9 As shown, with the first group of radiation source signals having a frequency Fc of 1.8 GHz, a pulse width of 1 μs, and a pulse repetition period of 20 μs, and the second group of radiation source signals having a frequency Fc of 1.8 GHz, a pulse width of 1 μs, and a pulse repetition period of 25 μs, the simulation designs the signal link establishment state for short-term and long-term signal loss observations. Radiation source envelope 1 and radiation source envelope 2 can independently complete link establishment, and the input signal of radiation source 2 is the envelope of radiation source 1 after removing the link establishment.
[0032] Four-source signal link establishment is performed for four sets of radiation source signals, such as... Figures 10-13 As shown, the signals from the four radiation sources can establish links independently. After the second radiation source successfully establishes a link, it can stably track the signal. If the signal is lost, the link can be re-established.
[0033] In summary, the interference strategy response method for rapid matching of multiple radiation source signals of this invention can adapt to complex electromagnetic environments and accurately interfere with threat signals. Specifically, it pre-establishes links based on the frequency and pulse width characteristics of the radiation source signals; it uses the pulse repetition period characteristics of the radiation sources to establish links and maintains prediction of the pre-arrival time of the radiation source signals. This invention utilizes multi-dimensional information of the radiation source signals to match the signals, which can effectively ensure the accuracy of radiation source signal matching; and it utilizes the characteristics of pulse repetition period tracking to ensure stable signal tracking. The interference strategy response method for rapid matching of multiple radiation source signals of this invention has the following advantages: it has the ability to match multiple radiation sources simultaneously; it uses multi-dimensional information matching such as pulse, bandwidth, and repetition information, resulting in high matching accuracy; it uses pulse repetition frequency tracking to establish links, resulting in high system stability; it can complete matching after the signal pulse measurement is completed, resulting in fast matching speed; and matching radiation sources can reduce interference with friendly signals.
[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A method for fast matching of interference strategies with signals from multiple radiation sources, characterized in that, The interference strategy response method for fast matching of multi-radiation source signals includes the following steps: Receive signals from multiple radiation sources and acquire a pulse descriptor for each radiation source signal, wherein the pulse descriptor includes frequency, pulse width, and multiple cycles; The pulse descriptor of each radiation source signal is matched simultaneously, and the link is established if the match is successful. After the link is established, the pulse descriptors at multiple PRI times are matched and confirmed. If the matching and confirmation are successful, the link is maintained, and the interference strategy is implemented to respond to the radiation source signal.
2. The interference strategy response method for fast matching of multi-radiation source signals according to claim 1, characterized in that, The specific steps for simultaneously matching the pulse descriptor of each radiation source signal, and completing the link establishment upon successful matching, are as follows: First, the pulse width and frequency of the radiation source signal are matched; Next, the recurrence intervals of the radiation source signal are matched. If the matching is successful, the link establishment is completed.
3. The interference strategy response method for fast matching of multi-radiation source signals according to claim 2, characterized in that, The interference strategy response method for fast matching of multi-radiation source signals further includes the following steps: Once a link to one of the radiation source signals is established, the radiation source signal is removed, and the remaining radiation source signals are re-linked.
4. The interference strategy response method for fast matching of multi-radiation source signals according to claim 1, characterized in that, The interference strategy response method for fast matching of multi-radiation source signals further includes the following steps: After the link is established, the pulse descriptors at multiple PRI times are matched and confirmed. If the matching and confirmation fails, the link is lost.
5. The interference strategy response method for fast matching of multi-radiation source signals according to claim 1, characterized in that, The specific steps for obtaining the pulse descriptor of each radiation source signal are as follows: Signal sorting is performed on the multiple radiation source signals to obtain pulse descriptor information for each radiation source signal.