Wireless information rapid positioning method, system, device and medium
By using directional antennas and geomagnetic gyroscopes in the wireless information positioning system to collect wireless data and use the method of sliding average to find the maximum value, the problem of insufficient analysis capabilities for multiple signal sources in the prior art is solved, and accurate positioning and analysis of multiple signal sources at different frequency points is realized, which simplifies the system structure and reduces costs.
Patent Information
- Application Number
- CN202411766572.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2044-12-04
AI Technical Summary
When facing multiple signal sources, especially signal sources at different frequency points, existing wireless information positioning technology has weak analysis capabilities, complex deployment, and insufficient anti-interference capability.
By controlling the rotation of the directional antenna at 360 degrees, and combining with the geomagnetic gyroscope to collect wireless data, the sliding average method is used to determine the rotation angle as the direction of the suspicious radio signal source, and the accurate analysis and positioning of multiple signal sources are achieved.
The system structure is simplified, the cost is reduced, and the analysis and positioning capabilities of multiple signal sources are improved. Especially when multiple signal sources at different frequency points exist, the signal orientation can be accurately feedback and the location can be distinguished.
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Figure CN119247263B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of wireless information positioning technology, and in particular to a method, system, device and medium for rapid positioning of wireless information. Background Art
[0002] Wireless information positioning mainly relies on wireless communication technology, which determines the target location by receiving radio waves and calculating the phase, transmission time and other information they contain.
[0003] The existing wireless information positioning schemes mainly include: (1) Time difference of arrival method: When the interference signal is received by multiple receivers, since the signal propagation speed is the same, the time difference of arrival can be used to calculate the distance from the interference source to each receiver, thereby determining the location of the interference source. When locating the interference signal, it is necessary to use multiple receivers to simultaneously receive the interference signal and record the arrival time of the signal. Then, based on the time difference of arrival, the distance difference from the interference source to each receiver is calculated. (2) Angle of arrival method: The array antenna measures the angle of the radio wave, and the angle of the signal incident direction is measured through multiple detectors. The position of the signal is located by the intersection of the angle extension line.
[0004] However, the above solution (1) requires multiple detectors, which is complex to deploy, and has a weak ability to analyze multiple signal sources, whether they are at the same or different frequencies. The above solution (2) has high positioning accuracy, but has a weak anti-interference ability when facing multiple signal sources, and has a weak ability to analyze multiple signal sources, whether they are at the same or different frequencies. Summary of the invention
[0005] In view of the above-mentioned deficiencies in the prior art, the present application provides a method, system, device and medium for rapid positioning of wireless information to solve the problems that the existing arrival time difference method requires multiple detectors and has weak analysis capability when facing multiple signal sources, whether they are of the same or different frequencies, and the existing arrival angle method has weak anti-interference capability for multiple signal sources and weak analysis capability for multiple signal sources.
[0006] In a first aspect, the present application provides a method for rapid positioning of wireless information, the method comprising:
[0007] The directional antenna is controlled to rotate 360 degrees, and wireless data is collected through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna; wherein the wireless data includes the rotation angle, the frequency amplitude, and the frequency center frequency; when the existing collected data includes different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source by using the sliding average maximum value method; when the existing collected data has the same center frequency but different rotation angles, several calculated maximum values are obtained by using the sliding average maximum value method; the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source.
[0008] In one implementation of the present application, the directional antenna is controlled to rotate 360 degrees, and wireless data is collected through the directional antenna and a geomagnetic gyroscope fixed on the directional antenna, specifically including:
[0009] In the process of controlling the directional antenna to rotate 360 degrees, when wireless data is collected at any angle, the position where the wireless data is collected is swung back and forth a preset number of times according to a preset swing amplitude to further confirm the wireless data.
[0010] In one implementation of the present application, the directional antenna is controlled to rotate 360 degrees, and wireless data is collected through the directional antenna and a geomagnetic gyroscope fixed on the directional antenna, specifically including:
[0011] When the spatial position is an indoor space, the rotation angle in the wireless data is obtained by using the gyroscope angular velocity integration method; wherein the reference reference point involved in the gyroscope angular velocity integration method is the direction of the directional antenna when the measurement starts;
[0012] When the spatial location is an outdoor space, the magnetic field meter data in the geomagnetic gyroscope is used as the sampling rotation angle data.
[0013] In one implementation of the present application, when the existing collected data contains different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source by a sliding average maximum value method, specifically including:
[0014] Generate a curve A(n) corresponding to each center frequency according to the collected data corresponding to each center frequency;
[0015] A(n)=An; where An represents the corrected frequency amplitude corresponding to the data collected at the nth sampling point;
[0016] Set the window value M;
[0017] By formula:
[0018] ,
[0019] Calculate and obtain the sliding average corresponding to each center frequency; where n belongs to [1, N], and N represents the total number of sampling points; where when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror extends M / 2 data sequences;
[0020] The rotation angle of the collected data corresponding to the maximum value of the sliding average value in the current center frequency is obtained, and then the corresponding rotation angle is determined to be the direction of the suspicious radio signal source.
[0021] In one implementation of the present application, when the existing collected data has the same center frequency but different rotation angles, a plurality of calculated maximum values are obtained by a sliding average maximum value method; and the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source, specifically including:
[0022] Generate a curve A(n) corresponding to the center frequency according to the collected data corresponding to the center frequency;
[0023] A(n)=An; where An represents the corrected frequency amplitude corresponding to the data collected at the nth sampling point;
[0024] Set the window value M;
[0025] By formula:
[0026] ,
[0027] Calculate and obtain the sliding average value corresponding to the center frequency; where n belongs to [1, N], and N represents the total number of sampling points; where when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror extends M / 2 data sequences;
[0028] Set the second window value X;
[0029] calculate:
[0030] Formula 1: ,
[0031] Formula 2: ,
[0032] Formula 3: ,
[0033] Formula 4: ,
[0034] Formula 5: ,
[0035] Formula 6: ,
[0036] Calculate whether the formulas corresponding to the collected data at the nth sampling point are all less than 0; The first three sampling points do not calculate formula 2, the first two sampling points do not calculate formula 3, and the last two sampling points do not calculate formula 1. The first sampling point does not calculate formula 6, the last three sampling points do not calculate formula 5, and the last two sampling points do not calculate formula 4;
[0037] Obtain H sampling point subscripts whose corresponding formulas are all less than 0, and set the set of sampling point subscripts to K;
[0038] By formula:
[0039] ;
[0040] Calculate the maximum value of the maximum variance of the collected data corresponding to the sampling points less than 0;
[0041] Where i represents the sampling point with the subscript i, and i belongs to the set K; and B(- ) to B(0), preset B(N+ ) to B(N+ )
[0042] The rotation angle whose calculated maximum value is greater than the preset maximum value is determined as the direction of the suspicious radio signal source.
[0043] In a second aspect, the present application provides a wireless information rapid positioning system, the system comprising:
[0044] The acquisition module is used to control the directional antenna to rotate 360 degrees, and collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna at the same time; wherein the wireless data includes the rotation angle, the frequency point amplitude, and the frequency point center frequency; the determination module is used to determine that when the existing acquisition data contains different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is the direction of the suspicious radio signal source by the method of sliding average maximum value; when the existing acquisition data has the same center frequency but different rotation angles, a number of calculated maximum values are obtained by the method of sliding average maximum value; the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source
[0045] In a third aspect, the present application provides a wireless information rapid positioning device, the device comprising:
[0046] processor;
[0047] and a memory storing executable codes thereon, which, when executed, causes the processor to execute any one of the wireless information rapid positioning methods described above.
[0048] In a fourth aspect, the present application provides a non-volatile computer storage medium having computer instructions stored thereon, which when executed implement a method for rapid positioning of wireless information as described above.
[0049] Those skilled in the art can understand that the present application has at least the following beneficial effects:
[0050] This application targets multiple signal sources. When there are multiple signals with different frequencies, the measured maximum value can accurately feedback the orientation of different signals (when the existing collected data contains different center frequencies and different rotation angles, the maximum value is obtained by sliding average, and the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source). If there are signals at different positions of the same center frequency, several calculated maximum values are obtained by sliding average to obtain the maximum value; the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source, that is, this application has a certain ability to distinguish positions.
[0051] In summary, the existing arrival time difference method usually requires multiple detectors to achieve positioning, which increases the complexity and cost of the system. The method proposed in this application can achieve positioning only through a single directional antenna and its rotation control, which simplifies the system structure and reduces costs. In addition, the existing technology has weak analysis capabilities when facing multiple signal sources, whether they are at the same frequency or at different frequencies. The present application collects wireless data including rotation angle, frequency amplitude, and frequency center frequency, and uses the gain-angle relationship function for correction, so as to more accurately analyze and distinguish multiple signal sources. BRIEF DESCRIPTION OF THE DRAWINGS
[0052] Some embodiments of the present disclosure are described below with reference to the accompanying drawings, in which:
[0053] Figure 1 This is a flow chart of a method for rapid wireless information positioning provided in an embodiment of the present application.
[0054] Figure 2 It is a schematic diagram of the internal structure of a wireless information rapid positioning system provided in an embodiment of the present application.
[0055] Figure 3 It is a schematic diagram of the internal structure of a wireless information rapid positioning device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0056] It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present disclosure, and do not mean that the present disclosure can only be implemented through the preferred embodiments. The preferred embodiments are only used to explain the technical principles of the present disclosure, and are not used to limit the protection scope of the present disclosure. Based on the preferred embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present disclosure.
[0057] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.
[0058] The technical solution proposed in the embodiments of the present application is described in detail below with reference to the accompanying drawings.
[0059] The embodiment provides a method for rapid positioning of wireless information, such as Figure 1 As shown, the method provided in the embodiment of the present application mainly includes the following steps:
[0060] Step 110: Control the directional antenna to rotate 360 degrees, and collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna.
[0061] It should be noted that the directional antenna can be used handheld. The wireless data includes the rotation angle, frequency amplitude, and frequency center frequency.
[0062] The process of obtaining the rotation angle here can be: fix the geomagnetic and gyroscope sensors on the directional antenna to obtain the rotation angle. When the radio signal acquisition device (directional antenna) collects the frequency point, it will also obtain the latest angle information of the current gyroscope geomagnetic.
[0063] In the process of controlling the directional antenna to rotate 360 degrees, when wireless data is collected at any angle, the collection angle is swung back and forth a preset number of times according to a preset swing amplitude to further confirm the wireless data.
[0064] Those skilled in the art can understand that the discrete frequency reporting frequency of the directional antenna needs to be considered to determine the rotation speed. The slower the rotation, the more accurate the frequency angle scanned. At the same time, when determining one or more suspicious signal sources, the suspicious signal source can be further confirmed by swinging back and forth several times (preset number of times) near the current angle.
[0065] In addition, the spatial location includes at least indoor space and outdoor space.
[0066] Wherein, based on the spatial position of the directional antenna, the rotation angle may be specifically:
[0067] When the spatial location is indoor space, the gyroscope angular velocity integration method is used to obtain the rotation angle in the wireless data. Among them, the reference point involved in the gyroscope angular velocity integration method is the direction of the directional antenna when the measurement starts; when the spatial location is outdoor space, the magnetic field meter data in the gyroscope is used as the sampled rotation angle data.
[0068] Those skilled in the art can understand that when the device is indoors, it is susceptible to magnetic field interference from electrical appliances, and the method of obtaining the current device angle by integrating the gyroscope angular velocity can avoid magnetic field interference. When the device is outdoors, it is better to directly obtain the angle using the geomagnetic field information, as there is less outdoor magnetic field interference, without cumulative error, and can be used directly.
[0069] Step 120: When the existing collected data contains different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source by using the sliding average method to obtain the maximum value; when the existing collected data has the same center frequency but different rotation angles, several calculated maximum values are obtained by using the sliding average method to obtain the maximum value; the rotation angle corresponding to the calculated maximum value that is greater than the preset maximum value is determined as the direction of the suspicious radio signal source.
[0070] Among them, the data processing scheme for determining the azimuths of multiple signal sources at different frequencies can be:
[0071] When the existing collected data contains different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source by the sliding average method. Specifically, it can be:
[0072] According to the collected data corresponding to each center frequency, a curve A(n) corresponding to each center frequency is generated; A(n)=An; wherein An represents the corrected frequency point amplitude corresponding to the collected data at the nth sampling point.
[0073] Set the window value M; through the formula:
[0074] ,
[0075] Calculate and obtain the sliding average corresponding to each center frequency; wherein n belongs to [1, N], and N represents the total number of sampling points; wherein, when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror expands M / 2 data sequences; obtain the rotation angle of the collected data corresponding to the maximum value of the sliding average in the current center frequency, and then determine that the corresponding rotation angle is the direction of the suspicious radio signal source.
[0076] Among them, the data processing scheme for determining the azimuths of multiple signal sources at the same frequency point can be:
[0077] When the existing collected data have the same center frequency but different rotation angles, a number of calculated maximum values are obtained by the sliding average maximum value method; the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source, specifically including:
[0078] According to the collected data corresponding to the center frequency, a curve A(n) corresponding to the center frequency is generated; A(n)=An; wherein An represents the corrected frequency point amplitude corresponding to the collected data at the nth sampling point.
[0079] Set the window value M; through the formula:
[0080] ,
[0081] The sliding average corresponding to the center frequency is calculated; wherein n belongs to [1, N], and N represents the total number of sampling points; wherein, when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror is extended to M / 2 data sequences.
[0082] Set the second window value X; calculate:
[0083] Formula 1: ,
[0084] Formula 2: ,
[0085] Formula 3: ,
[0086] Formula 4: ,
[0087] Formula 5: ,
[0088] Formula 6: ,
[0089] Calculate whether the formulas corresponding to the collected data at the nth sampling point are all less than 0; The first three sampling points do not calculate formula 2, the first two sampling points do not calculate formula 3, and the last two sampling points do not calculate formula 1. The first sampling point does not calculate formula 6, the last three sampling points do not calculate formula 5, and the last two sampling points do not calculate formula 4; obtain H sampling point subscripts whose corresponding formulas are all less than 0, and set the set of sampling point subscripts to K.
[0090] By formula:
[0091] ;
[0092] Calculate the maximum value of the maximum variance of the collected data corresponding to the sampling points less than 0; where i represents the sampling point with the subscript i, and i belongs to the set K; and preset B(- ) to B(0), preset B(N+ ) to B(N+ ) between the calculated maximum value and the preset maximum value; determining that the rotation angle is the direction of the suspicious radio signal source.
[0093] It should be noted that, usually, the maximum value of the signal after superposition will be disturbed, so an empirical value (preset maximum value) will be set. When the calculated maximum value > the preset maximum value, the significance screening passes. And the preset maximum value can be dynamically modified according to the actual situation through the human-computer interaction device.
[0094] In addition, those skilled in the art can understand that, in actual situations, the center frequency of the signal frequency collected by the radio signal collection device may produce errors, or the signal source may work in frequency hopping. Therefore, the present application can combine the suspicious signals with similar center frequencies into one signal.
[0095] In addition, in actual situations, the angle measurement accuracy of geomagnetism and gyroscope is limited. To facilitate measurement, the 360-degree azimuth can be evenly divided into 36 points for sampling analysis, and the direction of the ambiguous signal source can be preliminarily located. At this time, the signal positioning error is set to 10°.
[0096] In addition, this application Figure 2 A wireless information rapid positioning system is provided in the embodiment of the present application. Figure 2 As shown, the system provided in the embodiment of the present application mainly includes:
[0097] The acquisition module 210 is used to control the directional antenna to rotate 360 degrees, and at the same time collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna; wherein the wireless data includes the rotation angle, frequency amplitude, and frequency center frequency.
[0098] Determination module 220 is used to determine that when the existing collected data contains different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is the direction of the suspicious radio signal source by using the sliding average to find the maximum value method; when the existing collected data has the same center frequency but different rotation angles, a number of calculated maximum values are obtained by using the sliding average to find the maximum value method; determine that the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is the direction of the suspicious radio signal source.
[0099] The above is a method embodiment of the present application. Based on the same inventive concept, the present application embodiment also provides a wireless information rapid positioning device. Figure 3 As shown, the device includes: a processor; and a memory, on which executable codes are stored. When the executable codes are executed, the processor executes a wireless information rapid positioning method as described in the above embodiment.
[0100] Specifically, the server obtains the gain data of the directional antenna at various angles to obtain a gain-angle relationship function; controls the directional antenna to rotate 360 degrees, and simultaneously collects wireless data through the directional antenna and a geomagnetic gyroscope fixed on the directional antenna; wherein the wireless data includes a rotation angle, a frequency amplitude, and a frequency center frequency; when the existing collected data includes different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source by using a sliding average maximum value method; when the existing collected data has the same center frequency but different rotation angles, a number of calculated maximum values are obtained by using a sliding average maximum value method; and the rotation angle corresponding to the calculated maximum value that is greater than a preset maximum value is determined as the direction of the suspicious radio signal source.
[0101] In addition, an embodiment of the present application further provides a non-volatile computer storage medium on which executable instructions are stored. When the executable instructions are executed, a method for rapid positioning of wireless information as described above is implemented.
[0102] So far, the technical solutions of the present disclosure have been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present disclosure is not limited to these specific embodiments. Without departing from the technical principles of the present disclosure, those skilled in the art can split and combine the technical solutions in the above-mentioned various embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principle of the present disclosure will fall within the protection scope of the present disclosure.
Claims
1. A wireless information rapid positioning method, characterized in that: The method comprises: Control the directional antenna to rotate 360 degrees, and collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna; the wireless data includes the rotation angle, frequency amplitude, and frequency center frequency; When the existing collected data contains different center frequencies and different rotation angles, the rotation angle corresponding to the maximum value is determined as the direction of the suspicious radio signal source by using the sliding average method to obtain the maximum value; specifically, including: Generate a curve A(n) corresponding to each center frequency according to the collected data corresponding to each center frequency; A(n)=An; An represents the corrected frequency amplitude corresponding to the data collected at the nth sampling point; Set the window value M; By formula: , Calculate and obtain the sliding average corresponding to each center frequency; where n belongs to [1, N], and N represents the total number of sampling points; where when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror extends M / 2 data sequences; Obtain the rotation angle of the collected data corresponding to the maximum value of the sliding average value in the current center frequency, and then determine that the corresponding rotation angle is the direction of the suspicious radio signal source; When the existing collected data have the same center frequency but different rotation angles, a number of calculated maximum values are obtained by the sliding average maximum value method; the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source; specifically including: Generate a curve A(n) corresponding to the center frequency according to the collected data corresponding to the center frequency; A(n)=An; An represents the corrected frequency amplitude corresponding to the data collected at the nth sampling point; Set the window value M; By formula: , Calculate and obtain the sliding average value corresponding to the center frequency; where n belongs to [1, N], and N represents the total number of sampling points; where when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror extends M / 2 data sequences; Set the second window value X; calculate: Formula 1: , Formula 2: , Formula 3: , Formula 4: , Formula 5: , Formula 6: , Calculate whether the formulas corresponding to the collected data at the nth sampling point are all less than 0; The first three sampling points do not calculate formula 2, the first two sampling points do not calculate formula 3, and the last two sampling points do not calculate formula 1. The first sampling point does not calculate formula 6, the last three sampling points do not calculate formula 5, and the last two sampling points do not calculate formula 4; Obtain H sampling point subscripts whose corresponding formulas are all less than 0, and set the set of sampling point subscripts to K; By formula: ; Calculate the maximum value of the maximum variance of the collected data corresponding to the sampling points less than 0; Where i represents the sampling point with the subscript i, and i belongs to the set K; and B(- ) to B(0), preset B(N+ ) to B(N+ ) The rotation angle whose calculated maximum value is greater than the preset maximum value is determined as the direction of the suspicious radio signal source.
2. The wireless information rapid positioning method according to claim 1, characterized in that: Control the directional antenna to rotate 360 degrees, and collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna, including: In the process of controlling the directional antenna to rotate 360 degrees, when wireless data is collected at any angle, the position where the wireless data is collected is swung back and forth a preset number of times according to a preset swing amplitude to further confirm the wireless data.
3. The wireless information rapid positioning method according to claim 1, characterized in that: Control the directional antenna to rotate 360 degrees, and collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna, including: When the spatial position is an indoor space, the rotation angle in the wireless data is obtained by using the gyroscope angular velocity integration method; wherein the reference reference point involved in the gyroscope angular velocity integration method is the direction of the directional antenna when the measurement starts; When the spatial location is an outdoor space, the magnetic field meter data in the geomagnetic gyroscope is used as the sampling rotation angle data.
4. A wireless information rapid positioning system, characterized in that: The system comprises: The acquisition module is used to control the directional antenna to rotate 360 degrees, and collect wireless data through the directional antenna and the geomagnetic gyroscope fixed on the directional antenna; the wireless data includes the rotation angle, frequency amplitude, and frequency center frequency; The determination module is used to determine the rotation angle corresponding to the maximum value as the direction of the suspicious radio signal source by using the sliding average method to obtain the maximum value when the existing collected data contains different center frequencies and different rotation angles; specifically includes: Generate a curve A(n) corresponding to each center frequency according to the collected data corresponding to each center frequency; A(n)=An; An represents the corrected frequency amplitude corresponding to the data collected at the nth sampling point; Set the window value M; By formula: , Calculate and obtain the sliding average corresponding to each center frequency; where n belongs to [1, N], and N represents the total number of sampling points; where when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror extends M / 2 data sequences; Obtain the rotation angle of the collected data corresponding to the maximum value of the sliding average value in the current center frequency, and then determine that the corresponding rotation angle is the direction of the suspicious radio signal source; When the existing collected data have the same center frequency but different rotation angles, a number of calculated maximum values are obtained by the sliding average maximum value method; the rotation angle corresponding to the calculated maximum value greater than the preset maximum value is determined as the direction of the suspicious radio signal source; specifically including: Generate a curve A(n) corresponding to the center frequency according to the collected data corresponding to the center frequency; A(n)=An; An represents the corrected frequency amplitude corresponding to the data collected at the nth sampling point; Set the window value M; By formula: , Calculate and obtain the sliding average value corresponding to the center frequency; where n belongs to [1, N], and N represents the total number of sampling points; where when taking the M / 2 numbers before the beginning or the M / 2 numbers after the end, the sampling mirror extends M / 2 data sequences; Set the second window value X; calculate: Formula 1: , Formula 2: , Formula 3: , Formula 4: , Formula 5: , Formula 6: , Calculate whether the formulas corresponding to the collected data at the nth sampling point are all less than 0; The first three sampling points do not calculate formula 2, the first two sampling points do not calculate formula 3, and the last two sampling points do not calculate formula 1. The first sampling point does not calculate formula 6, the last three sampling points do not calculate formula 5, and the last two sampling points do not calculate formula 4; Obtain H sampling point subscripts whose corresponding formulas are all less than 0, and set the set of sampling point subscripts to K; By formula: ; Calculate the maximum value of the maximum variance of the collected data corresponding to the sampling points less than 0; Where i represents the sampling point with the subscript i, and i belongs to the set K; and B(- ) to B(0), preset B(N+ ) to B(N+ ) The rotation angle whose calculated maximum value is greater than the preset maximum value is determined as the direction of the suspicious radio signal source.
5. A wireless information rapid positioning device, characterized in that: The device comprises: processor; and a memory having executable codes stored thereon, which, when the executable codes are executed, enable the processor to execute a wireless information rapid positioning method as described in any one of claims 1-3.
6. A non-volatile computer storage medium, characterized in that: Computer instructions are stored thereon, and when the computer instructions are executed, a wireless information rapid positioning method as described in any one of claims 1-3 is implemented.
Citation Information
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Device and method to determine location of radio interference source and to measure intensity of interference signal emitted by said source
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