An electromagnetic environment background data processing method, system, device and medium

Abstract

This invention discloses a method, system, device, and medium for processing electromagnetic environment background data, relating to the field of radio monitoring technology. The method includes: acquiring spectrum scanning data for a predetermined duration or number of frames within a target area's frequency range of interest, and generating an electromagnetic background template based on this data; continuously monitoring the target area to obtain new spectrum scanning data; if the amplitude value of the new spectrum scanning data is greater than the sum of the amplitude value of the corresponding frequency point in the electromagnetic background template and a set increment value, then determining whether the signal at that frequency point is a normal signal; if it is a normal signal, then updating the amplitude value of that frequency point in the electromagnetic background template. This invention solves the technical problems of existing static electromagnetic environment background templates being unable to adapt to dynamic environmental changes, resulting in a high false alarm rate, and distributed monitoring networks being unsuitable for single-site scenarios. It achieves dynamic adaptive updating of the electromagnetic environment background template in a single-site context, significantly reducing the false alarm rate in radio monitoring.

Description

Technical Field

[0001] This invention relates to the field of radio monitoring technology, and in particular to a method, system, device, and medium for processing electromagnetic environment background data. Background Technology

[0002] An electromagnetic environment background template refers to a set of electromagnetic environment benchmark data obtained through system monitoring and analysis within a specific time, location, and frequency band. It is used to describe the electromagnetic radiation level, spectrum distribution, and typical characteristics of a certain area under the condition of no abnormal interference, and to provide a reference benchmark for subsequent electromagnetic environment monitoring, interference identification, and abnormal signal analysis.

[0003] In existing technologies, static electromagnetic environment background templates are commonly used. For example, in scenarios such as radio security, a short period of spectrum data (a few minutes to tens of minutes) is typically collected at the beginning of monitoring to generate a fixed background template that is used continuously. The collection of electromagnetic background data is usually based on electromagnetic silent target detection methods using distributed electromagnetic sensing networks, which requires the pre-deployment of a large number of data sampling points in the monitoring area to collaboratively complete background recognition.

[0004] However, the aforementioned existing technologies have obvious limitations: static background templates cannot adapt to the dynamic changes in electromagnetic background in the actual environment. For example, legitimate, non-long-range radio signals may not appear when collecting static electromagnetic environment background template data. If static templates are used for comparison, such normal changes will be misjudged as abnormal interference, resulting in a high false alarm rate.

[0005] Therefore, there is an urgent need in this field for an electromagnetic environment background data processing method that can be applied to a single monitoring station and can be dynamically and adaptively updated, so as to effectively distinguish normal background changes from real abnormal signals in complex and changing electromagnetic environments and significantly reduce false alarms. Summary of the Invention

[0006] This invention provides a method, system, device, and medium for processing electromagnetic environment background data to solve the aforementioned technical problems.

[0007] This invention is achieved through the following technical solution:

[0008] A first aspect of the present invention provides a method for processing electromagnetic environment background data, comprising:

[0009] Acquire spectrum scan data of a predetermined duration or number of frames within the frequency range of interest in the target area;

[0010] An electromagnetic background template is generated based on the spectrum scanning data. The electromagnetic background template is composed of the amplitude values ​​of each frequency point within the frequency range of interest.

[0011] Continuously monitor the target area to obtain new spectrum scan data;

[0012] Set the signal strength level difference value to Δ, where 2dB≤Δ≤10dB;

[0013] Determine whether the amplitude value of each frequency point in the new spectrum scan data is greater than the sum of the amplitude value and the difference Δ of the corresponding frequency point in the electromagnetic background template;

[0014] If the amplitude is greater than the value, then determine whether the signal at the frequency point is a normal signal; if it is a normal signal, then update the amplitude value of the frequency point in the electromagnetic background template.

[0015] Furthermore, the method for generating the electromagnetic background template based on the spectrum scanning data is as follows: generating the electromagnetic background template by maintaining the amplitude peak value during the acquisition process; or generating the electromagnetic background template by statistical analysis of the data after acquisition.

[0016] Furthermore, the method for determining whether the signal at the specified frequency point is a normal signal is as follows:

[0017] The signal at the frequency point is detected by a sliding time window. If the average amplitude of the signal at the frequency point remains stable within the sliding time window for a preset detection period, then the signal at the frequency point is determined to be a normal signal.

[0018] Furthermore, the method also includes: re-collecting spectral scan data of the target area at preset time intervals, and generating a new electromagnetic background template based on the newly collected spectral scan data to replace the current electromagnetic background template.

[0019] Furthermore, the electromagnetic background template includes multiple templates, each generated from spectral scan data collected at different time periods;

[0020] The time period is divided according to the daily routines of residents in the target area, or according to the commuting time patterns, or according to the time patterns of radio wave propagation.

[0021] A second aspect of the present invention provides an electromagnetic environment background data processing system, comprising:

[0022] The antenna feeder system is used to receive space radio signals;

[0023] A radio monitoring device, connected to the antenna feeder subsystem, is used to perform spectrum scanning on the received space radio signals and acquire spectrum scanning data.

[0024] The data processing module is communicatively connected to the radio monitoring equipment and is used to execute the electromagnetic environment background data processing method according to any one of the first aspects of the present invention to generate and update the electromagnetic background template.

[0025] A third aspect of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the electromagnetic environment background data processing method according to any one of the first aspects of the present invention.

[0026] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the electromagnetic environment background data processing method according to any one of the first aspects of the present invention.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0028] The electromagnetic environment background data processing method of the present invention does not rely on a network composed of multiple monitoring stations. It can realize the self-learning and evolution of the background template based solely on the continuous monitoring data of a single station. This enables a single radio monitoring station to adapt to dynamic and complex electromagnetic environments, greatly enhancing its practical value and independent working capability in various radio security scenarios.

[0029] By using data from subsequent monitoring that exhibit amplitudes higher than the template and are deemed normal signals to update the background template, the background template can accurately reflect new and stable radiation sources appearing in the electromagnetic environment (such as newly established legitimate radio stations). This avoids misjudging legitimate and continuous changes in the environmental background as abnormal interference, fundamentally solving the false alarm problem caused by static templates due to time-varying environmental conditions.

[0030] This method only initiates the update judgment when a signal with a higher amplitude than the current background template data is detected. This retains the sensitivity to detect potential strong interference signals while ensuring the reliability of the updated data through the normal signal judgment mechanism, preventing transient interference or abnormal signals from contaminating the background template. It achieves a good balance between sensitivity and reliability. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0032] Figure 1 This is a flowchart of the electromagnetic environment background data processing method;

[0033] Figure 2 This is a flowchart of a method for generating an electromagnetic background template using the amplitude peak hold method;

[0034] Figure 3 This is a flowchart of a method for generating electromagnetic background templates using statistical data.

[0035] Figure 4 This is a schematic diagram of an electromagnetic environment background data processing system. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0037] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to other steps or units inherent in the device.

[0038] The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the invention pertain. The terms (such as those defined in commonly used dictionaries) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of the invention.

[0039] The embodiments of the present invention provide an electromagnetic environment background data processing method, which aims to solve the problem of high false alarm rate in subsequent monitoring caused by dynamic changes in the environment due to fixed electromagnetic environment background templates. It is also applicable to single monitoring station application scenarios and realizes dynamic adaptive updating of background templates.

[0040] like Figure 1 As shown, an embodiment of the present invention provides a method for processing electromagnetic environment background data, comprising the following steps:

[0041] S101, acquire spectrum scan data of a predetermined duration or a predetermined number of frames within the frequency range of interest in the target area;

[0042] S102, Generate an electromagnetic background template B based on spectrum scanning data. The electromagnetic background template is composed of the amplitude values ​​of each frequency point within the frequency range of interest.

[0043] S103, continuously monitors the target area to obtain new spectrum scanning data;

[0044] S104, set the signal strength level difference value to △ (2dB≤△≤10dB), and determine whether the amplitude value of each frequency point in the new spectrum scan data is greater than the sum of the amplitude value of the corresponding frequency point in the electromagnetic background template B and △. If so, proceed to step S105; otherwise, continue the continuous monitoring step of S103.

[0045] S105, determine whether the frequency point is a normal signal. If it is a normal signal, proceed to S106; otherwise, continue with the continuous monitoring step of S103.

[0046] S106, Update the amplitude value of this frequency point in the electromagnetic background template B.

[0047] In this method, the target area refers to the area to be monitored or managed for radio security, such as areas of major events, examination areas, or important locations. By monitoring radio frequencies within the target area in real time and processing the data, an electromagnetic environment background template is generated, providing a reference benchmark for subsequent electromagnetic environment monitoring, interference identification, and abnormal signal analysis.

[0048] This method first performs initial learning of the electromagnetic environment of the target area. It uses radio monitoring equipment to perform a continuous spectrum scan of the target area within the frequency range of interest for a period of time, collects the spectrum scan data during this period, and generates a preliminary electromagnetic background template.

[0049] The generation method of electromagnetic background template is flexible. It can be generated by maintaining the amplitude peak during the acquisition process, or by statistical analysis of the acquired data after the acquisition is completed.

[0050] This embodiment clarifies the specific method for generating the initial template (peak hold method or data statistics method). In particular, the amplitude peak hold method can quickly capture the potential maximum background level of the environment during the initial learning stage, providing a conservative but reliable initial benchmark for subsequent monitoring. This is beneficial for incorporating various possible background signals into the template to the maximum extent in the early stage, thereby reducing missed alarms.

[0051] In one specific implementation, such as Figure 2 As shown, the method for generating the electromagnetic background template using the amplitude peak hold mode is as follows:

[0052] S201, set the M frequency points to be monitored (i=1,2,...,M), and perform Q consecutive spectrum scans (j=1,2,...,Q);

[0053] S202, acquire multiple spectrum scans of the target area, for each frequency point The maximum amplitude value in the Q-times spectrum scan data is taken as the frequency point. Background value;

[0054] S203, represent the background values ​​of all frequency points as an amplitude matrix to obtain a preliminary electromagnetic background template.

[0055] Record the frequency points in the Q-time spectrum scan data. The maximum amplitude value is maxA( The initial background template is represented as follows: =[ , , ,…… ]=[maxA( ),maxA( ), maxA( ),…maxA( This template characterizes the peak levels of background electromagnetic radiation at various frequencies in the region observed during the initial learning period.

[0056] In one specific implementation, such as Figure 3 As shown, the method for generating electromagnetic background templates using statistical data includes:

[0057] S301, set the M frequency points to be monitored (i=1,2,...,M), and perform Q consecutive spectrum scans (j=1,2,...,Q);

[0058] S302, acquire multiple spectrum scans of the target area, for each frequency point Calculate the statistics of all amplitude values ​​at this frequency point in Q scans as the frequency point. Background value ;

[0059] S303, background values ​​calculated for all frequency points Arranged in frequency order, they form a preliminary electromagnetic background template. .

[0060] The statistic can be the arithmetic mean, median, or a specific percentile (such as the 95th percentile). The average is preferred. K times the standard deviation The sum of these values ​​serves as the background value for that frequency point, i.e.:

[0061]

[0062] in, The preset confidence coefficient is usually selected based on the false alarm tolerance of the actual application scenario. For example, it can be taken as... or This calculation method can effectively smooth out occasional transient pulse interference, and the obtained background value can better represent the statistical upper limit of stable background noise at that frequency point.

[0063] The statistical generation method can better suppress the influence of random interference or transient signals on the initial template, making the generated initial background template smoother and more robust, and more suitable for scenarios with relatively stable electromagnetic environment but sporadic interference.

[0064] After obtaining the initial electromagnetic background template, when the new amplitude value A is monitored... Exceeding the original amplitude in the template If the set increment value △dB is determined to be a normal signal by signal analysis, then the amplitude value A( Update the corresponding data in the electromagnetic background template.

[0065] For example, if Δ is set to 5dB, when A( )> At +5dB, the frequency points in the electromagnetic background template The original amplitude value Updated to = A( ).

[0066] In one implementation, the electromagnetic background template is updated incrementally. Specifically, when a new amplitude value A is detected... ) > +△, where Used to mark data monitoring time; then the frequency points in the current electromagnetic background template will be used. amplitude value Replace with A( This avoids the problem of numerous false alarms in subsequent monitoring caused by traditional short-term spectrum background acquisition.

[0067] This incremental update method is applied to any given frequency point. For example, if for a frequency point... The amplitude value in the current template is = A( At the current time k, the frequency point is monitored. The amplitude value is A( A( ) + △, then By A( Updated to A( To adapt to changes in ambient background noise.

[0068] In one specific implementation, the electromagnetic background template is updated as follows: when a new amplitude value A is detected... Exceeding the template Amplitude at the corresponding frequency point +△, and when the signal analysis determines it to be a normal signal, the new amplitude value A( Add frequency points to the electromagnetic background template The historical array is used to mark the update time k, so as to form a multi-level electromagnetic background template.

[0069] The historical data generated during the dynamic update process can be further utilized to construct richer background models. Specifically, when a new amplitude value is determined to be a normal signal and used to update the template, this data point can be added to a historical data array for the corresponding frequency point, and its update time can be marked. In this way, a background template containing multiple levels of historical information can be formed, rather than just a single value. This multi-level background model facilitates more in-depth trend analysis and anomaly diagnosis.

[0070] For example, frequency points in the current electromagnetic background template The historical array is [maxA( ), A( )], maxA( () is the frequency point in the initial electromagnetic background template. The initial data, A( Indicates the frequency point An incremental update has already been performed, and the update time was [date missing]. A new amplitude value A has been detected. A( If this is triggered, an incremental update will be performed, changing the frequency points in the electromagnetic background template. The history array is updated to [maxA( ), A( ), A( The current electromagnetic background template has been updated to […]. =[ , , ,…… ,…… ]=[maxA( ),maxA( ),maxA( ),…… A( ),……maxA( In subsequent electromagnetic environment monitoring, interference identification, and abnormal signal analysis, with As an electromagnetic background template.

[0071] This embodiment constructs a multi-level background template, which retains important historical background data. This data can not only be used for current monitoring and comparison, but also provides a data foundation for trend analysis, historical retrospection, and in-depth diagnosis of the electromagnetic environment, thus expanding the application value of the system.

[0072] In one specific implementation, the method for determining whether a single-point spectrum data is a normal signal is as follows: the single-point spectrum data is detected by a sliding time window. If the average amplitude of the single-point spectrum data remains stable within the sliding time window within a preset detection period, that is, the average amplitude remains unchanged or the fluctuation is within the allowable range, then the single-point spectrum data is determined to be a normal signal.

[0073] For frequency points By continuously observing the signal at this frequency point, if the amplitude of the signal remains stable within the preset detection time (e.g., 30 minutes), the system determines that this signal is a newly added normal background signal, rather than transient interference, by performing sliding analysis within the detection time window. Subsequently, the system updates the data for the corresponding frequency point in the electromagnetic background template with this new, higher amplitude value.

[0074] The sliding window detection is performed according to a pre-set window length and movement step size. The movement step size is generally selected as 1 / 2 of the window length, and can be shortened or lengthened appropriately. The detection of stable signal can be quantified as follows: during the movement detection process, if the difference in the average signal amplitude within adjacent windows is less than a certain tolerance, the system determines that this signal is a normal background signal.

[0075] Through this incremental update mechanism, the background template can gradually adapt to new and stable radiation sources appearing in the electromagnetic environment, thereby effectively avoiding a large number of false alarms in subsequent monitoring due to the background template becoming outdated.

[0076] It should be noted that the incremental update mechanism also applies to the updating of electromagnetic background templates generated by data statistics.

[0077] In one implementation, spectral scan data of the target area is re-acquired at preset time intervals, and a new electromagnetic background template is generated based on the newly acquired spectral scan data to replace the current electromagnetic background template.

[0078] Considering that long-term incremental updates may introduce slowly accumulating noise bias or other systematic errors, this embodiment adopts a periodic full update strategy for the same target area, performing a full update of the background template in stages to further improve the long-term accuracy and robustness of the background template.

[0079] The time period can be set to daily, weekly, or monthly. In each new period, the target area is rescanned, and the same spectrum data processing and template construction process as the initial template generation is executed again, maintaining an incremental update mechanism within that period. The newly generated background template will completely replace the old template from the previous period, achieving background data reset and refresh.

[0080] By introducing a periodic full update strategy, the background template can be reset periodically, eliminating the cumulative errors or noise deviations that may be caused by long-term incremental updates, thus ensuring the accuracy and long-term reliability of the background template in the long run.

[0081] Furthermore, in order to more precisely characterize the electromagnetic environment at different times, this invention supports the generation and application of multiple time-segmented electromagnetic background templates. The initial electromagnetic background template for each time period is generated by the corresponding collected spectrum scan data and updated by the newly added monitoring data for the corresponding time period.

[0082] Electromagnetic environments are often closely related to human activities and natural phenomena, exhibiting distinct temporal characteristics. Therefore, it is crucial to pre-define the temporal characteristics of the electromagnetic environment, dividing it into different time periods and generating corresponding background templates. For example, time periods can be divided according to the daily routines of residents in the target area, creating four periods: early morning (00:00-5:59), morning (6:00-11:59), afternoon (12:00-17:59), and evening (18:00-23:59), with corresponding templates generated for each. Alternatively, based on the work and rest schedules in the target area, two templates can be generated: a workday (9:00-16:59) and a workday (17:00-8:59 the next day). Furthermore, daytime and nighttime templates can be generated based on the time patterns of radio wave propagation, according to local sunrise and sunset times. During different actual time periods, the system automatically calls upon the background template matching that period to identify abnormal signals, significantly improving monitoring accuracy.

[0083] By implementing refined time-segmented background template management, the system can better align with the periodic changes in the electromagnetic environment caused by human activities or the propagation patterns of radio waves. This can further reduce misjudgments caused by differences in time-segment characteristics and improve the accuracy of all-weather monitoring.

[0084] To implement the above method, embodiments of the present invention also provide an electromagnetic environment background data processing system. For example... Figure 4As shown, the system mainly includes an antenna feeder subsystem, radio monitoring equipment, and a data processing module.

[0085] The antenna feeder subsystem is responsible for receiving space radio signals. The radio monitoring equipment is connected to the antenna feeder subsystem, and its core function is to perform spectrum scanning on the signals sent by the antenna feeder subsystem to obtain raw spectrum scanning data.

[0086] The data processing module is connected to the radio monitoring equipment and stores a computer program. When the program is executed, it can perform all the steps of the aforementioned electromagnetic environment background data processing method, including but not limited to initial template generation, dynamic update judgment, periodic full update, time-segmented template management, and construction of multi-level background models.

[0087] This system architecture combines hardware signal acquisition with intelligent data processing to form a complete, adaptive radio security monitoring platform.

[0088] Embodiments of the present invention also provide an electronic device including a processor and a memory, wherein the number of processors may be one or more. The memory, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules. The processor executes various functional applications and data processing of the electronic device by running the software programs, instructions, and modules stored in the memory, thereby implementing the electromagnetic environment background data processing method of any of the above embodiments of the present invention.

[0089] The memory may primarily comprise a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data created based on terminal usage. Furthermore, the memory may include high-speed random access memory (RAM) and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory may further include memory remotely located relative to the processor, which can be connected to the electronic device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks (LANs), mobile communication networks, and combinations thereof.

[0090] Embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the electromagnetic environment background data processing method of any embodiment of the present invention.

[0091] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0092] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0093] Embodiments of the present invention also provide a computer program product that, when run on a computer, causes the computer to execute the electromagnetic environment background data processing method of any of the above embodiments of the present invention.

[0094] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for processing electromagnetic environment background data, characterized in that, include: Acquire spectrum scan data of a predetermined duration or number of frames within the frequency range of interest in the target area; Based on the spectrum scanning data, an electromagnetic background template is generated either by maintaining the amplitude peak value during the acquisition process or by statistically analyzing the data after acquisition; the electromagnetic background template is composed of the amplitude values ​​of each frequency point within the frequency range of interest. Continuously monitor the target area to obtain new spectrum scan data; The signal strength level difference is set to Δ, where 2dB≤Δ≤10dB; Determine whether the amplitude value of each frequency point in the new spectrum scan data is greater than the sum of the amplitude value and the difference Δ of the corresponding frequency point in the electromagnetic background template; If it is greater than that, then determine whether the signal at the specified frequency point is a normal signal; If it is a normal signal, then update the amplitude value of the frequency point in the electromagnetic background template; The method for generating the electromagnetic background template by maintaining the amplitude peak value during the acquisition process is as follows: S201, set the M frequency points to be monitored, and perform Q consecutive spectrum scans; S202, acquire multiple spectrum scans of the target area, for each frequency point For i=1,2,...,M, the maximum amplitude value in the Q-times spectral scan data is taken as the frequency point. Background value; S203, represent the background values ​​of all frequency points as an amplitude matrix to obtain a preliminary electromagnetic background template; The method for generating the electromagnetic background template using statistical methods based on the collected data is as follows: S301, set the M frequency points to be monitored, and perform Q consecutive spectrum scans; S302, acquire multiple spectrum scans of the target area, for each frequency point For i=1,2,...,M, calculate the statistics of all amplitude values ​​of the frequency point in Q scans as the frequency point. Background value The statistics mentioned are the arithmetic mean, median, percentile, or all frequency points. average K times the standard deviation sum; S303, background values ​​calculated for all frequency points Arranged in frequency order, they form a preliminary electromagnetic background template. .

2. The electromagnetic environment background data processing method according to claim 1, characterized in that, The method for determining whether the signal at the specified frequency point is a normal signal is as follows: The signal at the frequency point is detected by a sliding time window. If the average amplitude of the signal at the frequency point remains stable within the sliding time window for a preset detection period, then the signal at the frequency point is determined to be a normal signal.

3. The electromagnetic environment background data processing method according to claim 1, characterized in that, The method further includes: re-collecting spectral scan data of the target area at preset time intervals, and generating a new electromagnetic background template based on the newly collected spectral scan data to replace the current electromagnetic background template.

4. The electromagnetic environment background data processing method according to claim 1, characterized in that, The electromagnetic background template includes multiple templates, each generated from spectrum scan data collected at different time periods; The time period is divided according to the daily routines of residents in the target area, or according to the production and rest schedules, or according to the time patterns of radio wave propagation.

5. An electromagnetic environment background data processing system, characterized in that, include: The antenna feeder system is used to receive space radio signals; A radio monitoring device, connected to the antenna feeder subsystem, is used to perform spectrum scanning on the received space radio signals and acquire spectrum scanning data. The data processing module is communicatively connected to the radio monitoring equipment and is used to execute the electromagnetic environment background data processing method as described in any one of claims 1-4, and to generate and update the electromagnetic background template.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the electromagnetic environment background data processing method according to any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the electromagnetic environment background data processing method according to any one of claims 1-4.

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