Mobile message security verification method and device for near-space platform

Abstract

The present disclosure provides a method and device for mobile message security verification of a near-space platform, which can be applied to the field of data processing. The method includes: obtaining spatial state messages of multiple verification points and mobile messages of the near-space platform, where the mobile messages are sent by the near-space platform to the verification points; processing the multiple spatial state messages and mobile messages using a time difference algorithm to obtain time difference information of the mobile messages received between each benchmark verification point and a reference verification point; processing the multiple spatial state messages and mobile messages using an arrival angle algorithm to obtain arrival angle information of the mobile messages received at each verification point; processing the multiple spatial state messages and mobile messages using a frequency difference algorithm to obtain signal frequency difference information of the mobile messages received between each benchmark verification point and the reference verification point; processing the time difference information, signal frequency difference information, and arrival angle information according to an objective function to obtain a security verification result associated with the mobile message.

Description

Technical Field

[0001] The present disclosure relates to the field of data processing, and more specifically to a method, apparatus, device, medium, and program product for mobile message security verification on a near-space platform. Background Art

[0002] To improve the flight safety of aircraft and near-space platforms, aircraft and air traffic controllers need to obtain real-time position and speed information of near-space platforms to adjust flight decisions and avoid collisions.

[0003] In related technologies, a single geolocation method is used to verify the real-time position and speed information of near-space platforms, which does not conform to the motion characteristics of near-space platforms. For example, the movement of near-space platforms is relatively slow, and the mutual movement between ground stations and platforms is not obvious, resulting in low measurement accuracy and large errors in the measurement results of a single positioning method. Summary of the Invention

[0004] In view of the above problems, the present disclosure provides a method, apparatus, device, medium and program product for mobile message security verification in a near-space platform.

[0005] According to a first aspect of the present disclosure, a mobile message method for a near-space platform is provided, comprising: obtaining space status messages of respective multiple verification points and mobile messages of the near-space platform, wherein the verification point represents an aircraft or a ground station, the multiple verification points include a benchmark verification point and a reference verification point, and the mobile message is sent by the near-space platform to the verification point; processing the multiple space status messages and mobile messages using a time difference algorithm to obtain time difference information of receiving the mobile message between each benchmark verification point and the reference verification point; processing the multiple space status messages and mobile messages using an arrival angle algorithm to obtain arrival angle information of receiving the mobile message at each verification point; processing the multiple space status messages and mobile messages using a frequency difference algorithm to obtain signal frequency difference information of receiving the mobile message between each benchmark verification point and the reference verification point; processing the time difference information, signal frequency difference information and arrival angle information according to an objective function to obtain a security verification result associated with the mobile message.

[0006] According to an embodiment of the present disclosure, a spatial state message includes first position information, and a mobile message includes second position information; a time difference algorithm is used to process multiple spatial state messages and mobile messages to obtain time difference information of receiving the mobile message between each benchmark verification point and a reference verification point, including: performing difference processing on the first position information and the second position information of the benchmark verification point to obtain benchmark distance information corresponding to each benchmark verification point; performing difference processing on the first position information and the second position information of the reference verification point to obtain reference distance information corresponding to the reference verification point; and using the time difference algorithm to process each benchmark distance information and the reference distance information to obtain time difference information between each benchmark verification point and the reference verification point, wherein the time difference information is as shown in formula (1):

[0007]

[0008] Where Δt m,n is the time difference information, is the benchmark distance information corresponding to the mth benchmark verification point, is the reference distance information corresponding to the reference verification point, c is the propagation speed of electromagnetic waves in free space, It is the error information of measuring time difference information.

[0009] According to an embodiment of the present disclosure, an arrival angle algorithm is used to process multiple spatial status messages and mobile messages to obtain arrival angle information of the mobile message received at each verification point, including: determining the first azimuth information and the first elevation information of the mobile message arriving at the verification point; based on the arrival angle algorithm, formatting the first azimuth information and the first elevation information to obtain second azimuth information and second elevation information, and using the second azimuth information and the second elevation information as the arrival angle information corresponding to each verification point.

[0010] According to an embodiment of the present disclosure, based on an arrival angle algorithm, the first azimuth information and the first elevation information are format-converted to obtain second azimuth information and second elevation information, including: determining the distance information of each verification point based on the benchmark distance information and the reference distance information; projecting the distance information to obtain projection information corresponding to each verification point; using the projection information to format-convert the first azimuth information to obtain second azimuth information; using the distance information to format-convert the first elevation information to obtain second elevation information.

[0011] According to an embodiment of the present disclosure, the second azimuth information is as shown in the formula, and the second elevation information is as shown in formula (3):

[0012]

[0013]

[0014] Among them, l m，1 is the projection information, l m，2 is the distance between the verification point and the near-space platform, x a 、y a 、z a is the second position information, x m 、y m 、z m is the first location information, is the first azimuth information, is the first elevation angle information.

[0015] According to an embodiment of the present disclosure, the spatial state message further includes first speed information, and the mobile message further includes second speed information; a frequency difference algorithm is used to process multiple spatial state messages and mobile messages to obtain signal frequency difference information of the mobile message received between each benchmark verification point and the reference verification point, including: determining first signal frequency information associated with the mobile message; performing Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain second signal frequency information corresponding to each benchmark verification point; performing Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain third signal frequency information corresponding to the reference verification point; performing difference processing on the second signal frequency information and the third signal frequency information using the frequency difference algorithm to obtain signal frequency difference information of the mobile message received between each benchmark verification point and the reference verification point, wherein the signal frequency difference information is as shown in formula (4);

[0016]

[0017] Where Δf m，n is the signal frequency difference information, f0 is the first signal frequency information, is the first speed information corresponding to the mth benchmark verification point, is the first speed information corresponding to the reference verification point, is the second speed information.

[0018] According to an embodiment of the present disclosure, time difference information, signal frequency difference information and arrival angle information are processed according to an objective function to obtain a security verification result associated with the mobile message, including: processing time difference information, signal frequency difference information and arrival angle information according to an objective function to obtain an estimation result; analyzing the estimation result to obtain a security verification result associated with the mobile message.

[0019] According to an embodiment of the present disclosure, the estimation result is analyzed and processed to obtain a security verification result associated with the mobile message, including: determining the difference information between the estimation result and the mobile message; when the difference information meets a preset threshold, the security verification result characterizes the mobile message as security information.

[0020] According to an embodiment of the present disclosure, the estimation result is analyzed and processed to obtain a security verification result associated with the mobile message, which also includes: when the difference information does not meet a preset threshold, the security verification result characterizes that the mobile message is false information.

[0021] A second aspect of the present disclosure provides a mobile message security verification device for a near-space platform, comprising: an acquisition module for acquiring space status messages of multiple verification points and mobile messages of the near-space platform, wherein the verification point represents an aircraft or a ground station, the multiple verification points include a benchmark verification point and a reference verification point, and the mobile message is sent by the near-space platform to the verification point; a first processing module for processing the multiple space status messages and mobile messages using a time difference algorithm to obtain time difference information of receiving the mobile message between each benchmark verification point and the reference verification point; a second processing module for processing the multiple space status messages and mobile messages using an arrival angle algorithm to obtain arrival angle information of the mobile message received at each verification point; a third processing module for processing the multiple space status messages and mobile messages using a frequency difference algorithm to obtain signal frequency difference information of receiving the mobile message between each benchmark verification point and the reference verification point; and a fourth processing module for processing the time difference information, signal frequency difference information and arrival angle information according to an objective function to obtain a security verification result associated with the mobile message.

[0022] The third aspect of the present disclosure provides an electronic device, comprising: one or more processors; a memory for storing one or more programs, wherein, when the one or more programs are executed by the one or more processors, the one or more processors execute the above-mentioned mobile message security verification method for the near-space platform.

[0023] A fourth aspect of the present disclosure further provides a computer-readable storage medium having executable instructions stored thereon, which, when executed by a processor, causes the processor to execute the above-mentioned mobile message security verification method for the near-space platform.

[0024] The fifth aspect of the present disclosure further provides a computer program product, including a computer program, which implements the above-mentioned mobile message security verification method of the near-space platform when executed by a processor.

[0025] According to an embodiment of the present disclosure, spatial state messages and movement messages from a near-space platform are obtained for each of multiple verification points, wherein the verification points represent aircraft or ground stations, the multiple verification points include a baseline verification point and a reference verification point, and the movement messages are sent by the near-space platform to the verification points. The multiple spatial state messages and movement messages are processed using a time difference algorithm to obtain time difference information for receiving the movement message between each baseline verification point and the reference verification point. The multiple spatial state messages and movement messages are processed using an angle of arrival algorithm to obtain angle of arrival information for receiving the movement message at each verification point. The multiple spatial state messages and movement messages are processed using a frequency difference algorithm to obtain signal frequency difference information for receiving the movement message between each baseline verification point and the reference verification point. The time difference information, signal frequency difference information, and angle of arrival information are processed according to an objective function to obtain a security verification result associated with the movement message. By combining time difference information, signal frequency difference information, and angle of arrival information to obtain an estimated result, the problem of a single positioning method not being consistent with the motion characteristics of the near-space platform is avoided, thereby achieving the technical effect of improving positioning accuracy and verifying the accuracy of the movement message of the near-space platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above contents and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0027] Figure 1 The following schematically illustrates an application scenario of a method for securely verifying mobile messages on a near-space platform according to an embodiment of the present disclosure;

[0028] Figure 2 The flowchart of the mobile message security verification method of the near-space platform according to the embodiment of the present disclosure is schematically shown;

[0029] Figure 3 A schematic diagram schematically illustrates a method for mobile message security verification of a near-space platform according to an embodiment of the present disclosure;

[0030] Figure 4 A schematic diagram schematically illustrates verification accuracy rates under different numbers of verification points according to an embodiment of the present disclosure;

[0031] Figure 5 A structural block diagram of a mobile message security verification device for a near-space platform according to an embodiment of the present disclosure is schematically shown; and

[0032] Figure 6 A block diagram of an electronic device suitable for implementing a mobile message security verification method for a near-space platform according to an embodiment of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0034] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise," "include," etc. used herein indicate the presence of the features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0035] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0036] When expressions such as "at least one of A, B and C, etc." are used, they should generally be interpreted in accordance with the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0037] An embodiment of the present disclosure provides a method for mobile message security verification of a near-space platform, which obtains space status messages of each of a plurality of verification points and mobile messages of the near-space platform, wherein the verification point represents an aircraft or a ground station, the plurality of verification points include a benchmark verification point and a reference verification point, and the mobile message is sent by the near-space platform to the verification point; a time difference algorithm is used to process the plurality of space status messages and mobile messages to obtain time difference information of receiving the mobile message between each benchmark verification point and the reference verification point; an arrival angle algorithm is used to process the plurality of space status messages and mobile messages to obtain arrival angle information of receiving the mobile message at each verification point; a frequency difference algorithm is used to process the plurality of space status messages and mobile messages to obtain signal frequency difference information of receiving the mobile message between each benchmark verification point and the reference verification point; the time difference information, signal frequency difference information and arrival angle information are processed according to an objective function to obtain a security verification result associated with the mobile message.

[0038] Figure 1 The application scenario diagram of the mobile message security verification method of the near-space platform according to the embodiment of the present disclosure is schematically shown.

[0039] like Figure 1 As shown, the application scenario 100 according to this embodiment may include a near-space platform 101 , a ground station 102 , an aircraft 103 and a server 104 .

[0040] The near-space platform 101 sends its own movement information to the ground station 102 and the aircraft 103 respectively.

[0041] The ground station 102 and the aircraft 103 receive the movement message sent by the near-space platform 101 and send their own space status messages to the server 104 .

[0042] The server 104 may be a server that provides various services. The server 104 processes the received movement message and space status message to obtain an estimation result, makes a judgment on the estimation result, and feeds back the safety verification result associated with the judgment result to the ground station 102 and the aircraft 103.

[0043] It should be noted that the mobile message security verification method for the near-space platform provided in the embodiment of the present disclosure can generally be executed by the server 104. Accordingly, the mobile message security verification device for the near-space platform provided in the embodiment of the present disclosure can generally be set in the server 104. The mobile message security verification method for the near-space platform provided in the embodiment of the present disclosure can also be executed by a server or server cluster that is different from the server 104 and can communicate with the ground station 102, the aircraft 103 and / or the server 104. Accordingly, the mobile message security verification device for the near-space platform provided in the embodiment of the present disclosure can also be set in a server or server cluster that is different from the server 104 and can communicate with the ground station 102, the aircraft 103 and / or the server 105.

[0044] It should be understood that Figure 1 The number of near-space platforms, ground stations, aircraft, and servers in the embodiment is merely illustrative. Any number of near-space platforms, ground stations, aircraft, and servers may be used depending on the implementation requirements.

[0045] The following will be based on Figure 1 The scenario described is described in detail. The mobile message security verification method of the near-space platform of the disclosed embodiment is described in detail.

[0046] Figure 2 The flowchart of the mobile message security verification method of the near-space platform according to the embodiment of the present disclosure is schematically shown.

[0047] like Figure 2 As shown, the mobile message security verification method of the near-space platform of this embodiment includes operations S210 to S250.

[0048] In operation S210, space status messages of multiple verification points and movement messages of the near-space platform are obtained, wherein the verification point represents an aircraft or a ground station, the multiple verification points include a benchmark verification point and a reference verification point, and the movement message is sent by the near-space platform to the verification point.

[0049] According to the embodiments of the present disclosure, the near-space platform mostly adopts a streamlined elliptical hull design with an extremely small reflection cross-section, which cannot be detected by primary radar. Therefore, the near-space platform actively broadcasts its movement information to nearby aircraft and ground stations.

[0050] According to an embodiment of the present disclosure, the mobile message may be location information and speed information of the near-space platform.

[0051] According to an embodiment of the present disclosure, the space status message is status information of an aircraft or a ground station, wherein, when the verification point represents an aircraft, the space status message is movement information of the aircraft, such as position information and speed information of the aircraft; when the verification point represents a ground station, the space status message represents the position of the ground station.

[0052] In operation S220, a plurality of spatial state messages and movement messages are processed using a time difference algorithm to obtain time difference information of receiving the movement message between each benchmark verification point and the reference verification point.

[0053] According to an embodiment of the present disclosure, the time difference algorithm may be a time difference of arrival algorithm (TDOA).

[0054] According to an embodiment of the present disclosure, the spatial status messages between verification points are different, and the time when the mobile message arrives at each verification point is correspondingly different. The time difference algorithm is used to determine the time difference information between the benchmark verification point and the reference verification point, so as to locate the nearby space platform based on multiple time difference information.

[0055] In operation S230, the plurality of space status messages and movement messages are processed using an arrival angle algorithm to obtain arrival angle information of the movement message received by each verification point.

[0056] According to an embodiment of the present disclosure, the angle of arrival algorithm may be a hybrid angle of arrival algorithm (AOA).

[0057] According to an embodiment of the present disclosure, the spatial status messages between verification points are different, and the angle between each verification point and the adjacent space platform is different. The arrival angle algorithm is used to process the arrival angle of the mobile message received by each verification point to locate the adjacent space platform based on multiple arrival angle information.

[0058] In operation S240, a frequency difference algorithm is used to process the plurality of spatial state messages and movement messages to obtain signal frequency difference information of movement messages received between each benchmark verification point and the reference verification point.

[0059] According to an embodiment of the present disclosure, the frequency difference algorithm may be a frequency difference of arrival algorithm (FDOA).

[0060] According to an embodiment of the present disclosure, the mobile message of the near-space platform will undergo a frequency change when it reaches the verification point. Based on different space status messages, the frequency change of the signal when each verification point receives the mobile message is different. The frequency difference algorithm is used to determine the signal frequency difference information between the benchmark verification point and the reference verification point, so as to locate the near-space platform based on multiple signal frequency difference information.

[0061] In operation S250, the time difference information, the signal frequency difference information, and the arrival angle information are processed according to the objective function to obtain a security verification result associated with the mobile message.

[0062] According to the embodiments of the present disclosure, an attacker may implant a faulty program into a near-space platform to attack the software system within the near-space platform, thereby tampering with the near-space platform's mobile messages and disrupting air traffic order. Therefore, an objective function is used to determine whether a received mobile message is safe.

[0063] According to an embodiment of the present disclosure, the objective function may be a set of estimation equations including position and velocity parameters of the near-space platform, which is used to estimate the real position information and velocity information of the near-space platform.

[0064] According to an embodiment of the present disclosure, spatial state messages and movement messages from a near-space platform are obtained for each of multiple verification points, wherein the verification points represent aircraft or ground stations, the multiple verification points include a baseline verification point and a reference verification point, and the movement messages are sent by the near-space platform to the verification points. The multiple spatial state messages and movement messages are processed using a time difference algorithm to obtain time difference information for receiving the movement message between each baseline verification point and the reference verification point. The multiple spatial state messages and movement messages are processed using an angle of arrival algorithm to obtain angle of arrival information for receiving the movement message at each verification point. The multiple spatial state messages and movement messages are processed using a frequency difference algorithm to obtain signal frequency difference information for receiving the movement message between each baseline verification point and the reference verification point. The time difference information, signal frequency difference information, and angle of arrival information are processed according to an objective function to obtain a security verification result associated with the movement message. By combining time difference information, signal frequency difference information, and angle of arrival information to obtain an estimated result, the problem of a single positioning method not being consistent with the motion characteristics of the near-space platform is avoided, thereby achieving the technical effect of improving positioning accuracy and verifying the accuracy of the movement message of the near-space platform.

[0065] According to an embodiment of the present disclosure, a spatial state message includes first position information, and a mobile message includes second position information; a time difference algorithm is used to process multiple spatial state messages and mobile messages to obtain time difference information of receiving the mobile message between each benchmark verification point and a reference verification point, including: performing difference processing on the first position information and the second position information of the benchmark verification point to obtain benchmark distance information corresponding to each benchmark verification point; performing difference processing on the first position information and the second position information of the reference verification point to obtain reference distance information corresponding to the reference verification point; and using the time difference algorithm to process each benchmark distance information and the reference distance information to obtain time difference information between each benchmark verification point and the reference verification point, wherein the time difference information is as shown in formula (1):

[0066]

[0067] Where Δt m,n is the time difference information, is the benchmark distance information corresponding to the mth benchmark verification point, is the reference distance information corresponding to the reference verification point, c is the propagation speed of electromagnetic waves in free space, It is the error information of measuring time difference information.

[0068] According to an embodiment of the present disclosure, the first position information may be the coordinate position information of the verification point in the three-dimensional space coordinate system. For example, the first position information of the mth reference verification point may be p m =(x m ,ym ,z m ).

[0069] According to an embodiment of the present disclosure, the second position information may be the coordinate position information of the adjacent space platform in the three-dimensional space coordinate system. For example, the second position information may be p=(x a ,y a ,z a ).

[0070] According to an embodiment of the present disclosure, performing difference processing on the first position information and the second position information of the reference verification point may be to calculate the distance vector between the first position information and the second position information. For example, the reference distance vector corresponding to the mth reference verification point may be Then determine the corresponding reference distance information as

[0071] According to an embodiment of the present disclosure, the reference distance information corresponding to the reference verification point is obtained in the same manner as determining the reference distance information.

[0072] According to the embodiment of the present disclosure, the above formula (1) is used to obtain and The time difference information corresponding to the mth reference verification point is obtained by performing the above processing on each reference verification point, thereby obtaining the time difference information corresponding to each reference verification point.

[0073] According to the embodiments of the present disclosure, the time difference information obtained based on TDOA has higher stability and stronger anti-interference capability for positioning of near-space platforms.

[0074] According to an embodiment of the present disclosure, an arrival angle algorithm is used to process multiple spatial status messages and mobile messages to obtain arrival angle information of the mobile message received at each verification point, including: determining the first azimuth information and the first elevation information of the mobile message arriving at the verification point; based on the arrival angle algorithm, formatting the first azimuth information and the first elevation information to obtain second azimuth information and second elevation information, and using the second azimuth information and the second elevation information as the arrival angle information corresponding to each verification point.

[0075] According to an embodiment of the present disclosure, and θ' m They represent the azimuth and elevation information of the signal arriving at the verification point without error. Since the verification point will have errors when measuring the direction of arrival of the signal, the first azimuth information measured by the verification point First elevation angle information There is a relationship between the error-free azimuth information and elevation information as shown in formula (2) and formula (3).

[0076]

[0077]

[0078] in, and are the measurement errors of azimuth and elevation, respectively.

[0079] According to an embodiment of the present disclosure, the first azimuth information and the first elevation information are format-converted so that the second azimuth information and the second elevation information represent the correspondence between the first azimuth information and the first elevation information and the mobile message.

[0080] According to an embodiment of the present disclosure, based on an arrival angle algorithm, the first azimuth information and the first elevation information are format-converted to obtain second azimuth information and second elevation information, including: determining the distance information of each verification point based on the benchmark distance information and the reference distance information; projecting the distance information to obtain projection information corresponding to each verification point; using the projection information to format-convert the first azimuth information to obtain second azimuth information; using the distance information to format-convert the first elevation information to obtain second elevation information.

[0081] According to an embodiment of the present disclosure, the distance information of each verification point may be the distance vector between the first position information and the second position information obtained above, the benchmark distance information, and the reference distance information.

[0082] According to an embodiment of the present disclosure, the distance information is projected to determine the distance vector The projection length in the XY plane is used to obtain the projection information corresponding to the mth benchmark verification point.

[0083] According to an embodiment of the present disclosure, the distance between each verification point and the adjacent space platform is determined based on the benchmark distance information and the reference distance information. For example, the distance between the mth benchmark verification point and the adjacent space platform is

[0084] According to the embodiment of the present disclosure, the above formula (2) and formula (3) are shifted and based on l m,1 and l m,2 Perform the conversion to obtain formula (4) and formula (5).

[0085]

[0086]

[0087] Further deduction of formula (4) and formula (5) can yield formula (6) and formula (7).

[0088]

[0089]

[0090] Due to the azimuth measurement error and elevation measurement error (i.e. and ) are very small, then there is Therefore, the above formulas (6) and (7) can be rewritten to obtain formulas (8) and (9).

[0091] According to an embodiment of the present disclosure, the second azimuth information is as shown in formula (6), and the second elevation information is as shown in formula (7):

[0092]

[0093]

[0094] Among them, l m,1 is the projection information, l m,2 is the distance between the verification point and the near-space platform, x a 、y a 、z a is the second position information, x m 、y m 、z m is the first location information, is the first azimuth information, is the first elevation angle information.

[0095] According to an embodiment of the present disclosure, the arrival angle information determined based on the AOA can ensure good positioning accuracy when positioning an adjacent space platform.

[0096] According to an embodiment of the present disclosure, the spatial state message further includes first speed information, and the mobile message further includes second speed information; a frequency difference algorithm is used to process multiple spatial state messages and mobile messages to obtain signal frequency difference information of the mobile message received between each benchmark verification point and the reference verification point, including: determining first signal frequency information associated with the mobile message; performing Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain second signal frequency information corresponding to each benchmark verification point; performing Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain third signal frequency information corresponding to the reference verification point; performing difference processing on the second signal frequency information and the third signal frequency information using the frequency difference algorithm to obtain signal frequency difference information of the mobile message received between each benchmark verification point and the reference verification point, wherein the signal frequency difference information is as shown in formula (10);

[0097]

[0098] Where Δf m,n is the signal frequency difference information, f0 is the first signal frequency information, is the first speed information corresponding to the mth benchmark verification point, is the first speed information corresponding to the reference verification point, is the second speed information.

[0099] According to an embodiment of the present disclosure, the first signal frequency information associated with the mobile message may be the carrier frequency f0 used by the near-space platform when broadcasting the mobile message.

[0100] According to an embodiment of the present disclosure, the first speed information of the space status message may be the speed vector of the verification point in the three-dimensional space coordinate system. For example, the first speed information of the mth reference verification point may be

[0101] According to an embodiment of the present disclosure, the second speed information of the mobile message may be a speed vector of the near-space platform in a three-dimensional space coordinate system. For example, the second speed information of the near-space platform may be

[0102] According to an embodiment of the present disclosure, the first signal frequency information, the first speed information, the second speed information and the reference distance information are processed by the Doppler effect mechanism, which may be as shown in formula (11):

[0103]

[0104] According to an embodiment of the present disclosure, the third signal frequency information corresponding to the reference verification point is determined based on the above formula (11) in the same manner as determining the second signal frequency information corresponding to each benchmark verification point.

[0105] According to an embodiment of the present disclosure, the second signal frequency information and the third signal frequency information are processed using the above formula (10) to obtain the signal frequency difference information corresponding to the mth benchmark verification point, and each benchmark verification point is calculated to obtain the signal frequency difference information corresponding to each benchmark verification point.

[0106] According to an embodiment of the present disclosure, the signal frequency difference information obtained based on FDOA can be used to locate the speed information of the near-space platform.

[0107] According to an embodiment of the present disclosure, time difference information, signal frequency difference information and arrival angle information are processed according to an objective function to obtain a security verification result associated with the mobile message, including: processing time difference information, signal frequency difference information and arrival angle information according to an objective function to obtain an estimation result; analyzing the estimation result to obtain a security verification result associated with the mobile message.

[0108] According to the embodiments of the present disclosure, the AOA-based positioning method can ensure good positioning accuracy, but the positioning error increases with the platform's suspension height. The TDOA-based positioning method has higher stability and stronger anti-interference capabilities. Both of these methods can only be used to estimate the position of the near-space platform, and the estimation of the platform's velocity requires FDOA. Therefore, combining AOA, TDOA, and FDOA measurement methods can increase the reliability of near-space platform motion information estimation to a certain extent.

[0109] According to an embodiment of the present disclosure, the time difference information, signal frequency difference information and arrival angle information obtained above are processed using an objective function to obtain an estimation result representing the real movement message of the near-space platform.

[0110] According to an embodiment of the present disclosure, the objective function may be as shown in formula (12).

[0111] u=g(s)+e (12);

[0112] Where s=[x a ,y a ,z a ,v x ,v y ,v z ] T It is a vector of unknown variables, representing the real movement information of the near-space platform to be estimated. The vector u and the matrix g(s) are u=[Δt 2,1,Δt 3,1 ,…Δt M,1 ,0,…,0,Δf 2,1 ,Δf 3,1 ,…Δf M,1 ] T and Among them, vector u can be the time difference information, signal frequency difference information and arrival angle information obtained by taking the first verification point as the reference verification point and the second, third...M verification points as the benchmark verification points. Vector e is a vector composed of the errors in the time difference information, signal frequency difference information and arrival angle information, that is,

[0113] According to an embodiment of the present disclosure, the objective function shown in the above formula (12) is rewritten to obtain a rewritten objective function, as shown in formula (13).

[0114] s * =arg min s ||ug(s)|| 2 (13);

[0115] in p * and Represent the estimated position and estimated speed of the estimation results respectively.

[0116] According to an embodiment of the present disclosure, the objective function described in the above formula (13) is processed using the Levenberg-Marquardt algorithm to obtain an estimation result.

[0117] According to an embodiment of the present disclosure, a judgment is made on the mobile message based on the obtained estimation result to determine whether there is a deviation between the two, so as to obtain a security verification result associated with the mobile message.

[0118] According to an embodiment of the present disclosure, the estimation result is analyzed and processed to obtain a security verification result associated with the mobile message, including: determining the difference information between the estimation result and the mobile message; when the difference information meets a preset threshold, the security verification result characterizes the mobile message as security information.

[0119] According to an embodiment of the present disclosure, the estimation result is analyzed and processed to obtain a security verification result associated with the mobile message, which also includes: when the difference information does not meet a preset threshold, the security verification result characterizes that the mobile message is false information.

[0120] According to an embodiment of the present disclosure, a position difference between the estimated position information and the second position information of the mobile message, and a speed difference between the estimated speed information and the second speed information of the mobile message are calculated. The security verification result indicates that the mobile message is secure information if and only if the position difference satisfies a preset position threshold and the speed difference satisfies a preset speed threshold.

[0121] According to an embodiment of the present disclosure, when any one of the position difference or speed difference does not meet the preset threshold, the security verification result indicates that the mobile message is false information. For example, the position preset threshold is Q p , the speed preset threshold is Q v , if ||p * -p||>Q p or This proves that the second position information or second speed information broadcast by the near-space platform is false information. At this time, the server sends warning information and estimation results to all verification points to assist the verification points in making correct and effective operations based on the real movement information of the near-space platform.

[0122] Figure 3 A schematic diagram of a mobile message security verification method for a near-space platform according to an embodiment of the present disclosure is schematically shown.

[0123] like Figure 3 As shown, in operation S310, the space status messages of multiple verification points and the movement messages of the adjacent space platform are obtained; based on the space status messages and movement messages obtained in operation S310, operations S320, S330 and S340 are respectively performed to obtain time difference information, arrival angle information and signal frequency difference information; in operation S350, the time difference information, arrival angle information and signal frequency difference information obtained above are processed using the objective function to obtain an estimation result representing the real movement message of the adjacent space platform; then operation S360 is performed to determine whether the estimation result obtained above meets the preset threshold. If so, operation S370 is performed to output the security verification result representing the security information and process the verification point according to the movement message; if not, operation S380 is performed to output the security verification result representing the false information, and then operation S390 is performed to send the estimation result obtained in operation S350 to the verification point, and process the verification point according to the estimation result.

[0124] Figure 4 A schematic diagram schematically shows verification accuracy rates under different numbers of verification points according to an embodiment of the present disclosure.

[0125] like Figure 4As shown, the figure depicts the verification accuracy of the AOA estimation method, TDOA estimation method, FDOA estimation method, and the mobile message security verification method for the near-space platform disclosed in the present invention. As the number of verification points increases, the verification accuracy of each estimation method gradually increases until it stabilizes, and the verification accuracy of the mobile message security verification method for the near-space platform disclosed in the present invention is always higher than the other three estimation methods. When the number of verification points increases to 9, the verification accuracy of the mobile message security verification method based on the near-space platform disclosed in the present invention is 99.34%, the verification accuracy of the AOA estimation method is 91.27%, the verification accuracy of the TDOA estimation method is 95.04%, and the verification accuracy of the FDOA estimation method is 93.38%. It can be seen that the verification accuracy of the mobile message security verification method for the near-space platform disclosed in the present invention is relatively high, which can ensure both a low false alarm rate and a low missed alarm rate, effectively improving flight safety in the airspace.

[0126] Based on the above-mentioned mobile message security verification method of the near-space platform, the present disclosure also provides a mobile message security verification device of the near-space platform. Figure 5 The device is described in detail.

[0127] Figure 5 The structural block diagram of the mobile message security verification device of the near-space platform according to an embodiment of the present disclosure is schematically shown.

[0128] like Figure 5 As shown, the mobile message security verification device 500 of the near-space platform of this embodiment includes an acquisition module 510 , a first processing module 520 , a second processing module 530 , a third processing module 540 and a fourth processing module 550 .

[0129] Acquisition module 510 is configured to acquire space status messages from multiple verification points and movement messages from a near-space platform. The verification points represent aircraft or ground stations, and the multiple verification points include baseline verification points and reference verification points. The movement messages are sent from the near-space platform to the verification points. In one embodiment, acquisition module 510 may be configured to perform operation S210 described above, and will not be further described here.

[0130] A first processing module 520 is configured to process the plurality of spatial state messages and the movement messages using a time difference algorithm to obtain time difference information between each benchmark verification point and the reference verification point when the movement message is received. In one embodiment, the first processing module 520 may be configured to perform operation S220 described above and will not be further described herein.

[0131] The second processing module 530 is configured to process the plurality of spatial state messages and the movement messages using an angle of arrival algorithm to obtain angle of arrival information at each verification point at which the movement message is received. In one embodiment, the second processing module 530 may be configured to perform operation S230 described above, which will not be further described herein.

[0132] The third processing module 540 is configured to process the plurality of spatial state messages and the movement messages using a frequency difference algorithm to obtain signal frequency difference information for receiving the movement messages between each benchmark verification point and the reference verification point. In one embodiment, the third processing module 540 may be configured to perform operation S240 described above and will not be further described here.

[0133] The fourth processing module 550 is configured to process the time difference information, the signal frequency difference information, and the arrival angle information according to an objective function to obtain a security verification result associated with the mobile message. In one embodiment, the fourth processing module 550 may be configured to perform operation S250 described above, which will not be further described herein.

[0134] According to an embodiment of the present disclosure, spatial state messages and movement messages from a near-space platform are obtained for each of multiple verification points, wherein the verification points represent aircraft or ground stations, the multiple verification points include a baseline verification point and a reference verification point, and the movement messages are sent by the near-space platform to the verification points. The multiple spatial state messages and movement messages are processed using a time difference algorithm to obtain time difference information for receiving the movement message between each baseline verification point and the reference verification point. The multiple spatial state messages and movement messages are processed using an angle of arrival algorithm to obtain angle of arrival information for receiving the movement message at each verification point. The multiple spatial state messages and movement messages are processed using a frequency difference algorithm to obtain signal frequency difference information for receiving the movement message between each baseline verification point and the reference verification point. The time difference information, signal frequency difference information, and angle of arrival information are processed according to an objective function to obtain a security verification result associated with the movement message. By combining time difference information, signal frequency difference information, and angle of arrival information to obtain an estimated result, the problem of a single positioning method not being consistent with the motion characteristics of the near-space platform is avoided, thereby achieving the technical effect of improving positioning accuracy and verifying the accuracy of the movement message of the near-space platform.

[0135] According to an embodiment of the present disclosure, any multiple modules among the acquisition module 510, the first processing module 520, the second processing module 530, the third processing module 540, and the fourth processing module 550 can be combined into one module for implementation, or any one of the modules can be split into multiple modules. Alternatively, at least part of the functions of one or more of these modules can be combined with at least part of the functions of other modules and implemented in one module. According to an embodiment of the present disclosure, at least one of the acquisition module 510, the first processing module 520, the second processing module 530, the third processing module 540, and the fourth processing module 550 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation methods of software, hardware, and firmware, or in an appropriate combination of any of them. Alternatively, at least one of the acquisition module 510, the first processing module 520, the second processing module 530, the third processing module 540 and the fourth processing module 550 can be at least partially implemented as a computer program module, which can perform corresponding functions when executed.

[0136] According to an embodiment of the present disclosure, the first processing module 520 includes a first processing sub-module, a second processing sub-module, and a third processing sub-module.

[0137] The first processing submodule is configured to perform difference processing on the first position information and the second position information of the reference verification point to obtain reference distance information corresponding to each reference verification point.

[0138] The second processing submodule is configured to perform difference processing on the first position information and the second position information of the reference verification point to obtain reference distance information corresponding to the reference verification point.

[0139] The third processing submodule is configured to process each of the benchmark distance information and the reference distance information using the time difference algorithm to obtain the time difference information between each of the benchmark verification points and the reference verification point.

[0140] According to an embodiment of the present disclosure, the second processing module 530 includes a first determining submodule and a first converting submodule.

[0141] The first determining submodule is configured to determine first azimuth angle information and first elevation angle information of the mobile message arriving at the verification point.

[0142] The first conversion submodule is used to convert the format of the first azimuth information and the first elevation information based on the arrival angle algorithm to obtain second azimuth information and second elevation information, and use the second azimuth information and the second elevation information as the arrival angle information corresponding to each of the verification points.

[0143] According to an embodiment of the present disclosure, the first conversion submodule includes a first determining unit, a projection unit, a first conversion unit, and a second conversion unit.

[0144] The first determining unit is configured to determine the distance information of each verification point according to the benchmark distance information and the reference distance information.

[0145] A projection unit is configured to project the distance information to obtain projection information corresponding to each verification point.

[0146] The first conversion unit is configured to convert the first azimuth angle information into a format using the projection information to obtain the second azimuth angle information.

[0147] The second conversion unit is configured to perform format conversion on the first elevation angle information by using the distance information to obtain the second elevation angle information.

[0148] According to an embodiment of the present disclosure, the third processing module 540 includes a second determining submodule, a fourth processing submodule, a fifth processing submodule, and a sixth processing submodule.

[0149] The second determining submodule is configured to determine first signal frequency information associated with the mobile message.

[0150] The fourth processing submodule is configured to perform Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain second signal frequency information corresponding to each reference verification point.

[0151] The fifth processing submodule is configured to perform Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain third signal frequency information corresponding to the reference verification point.

[0152] The sixth processing submodule is configured to perform difference processing on the second signal frequency information and the third signal frequency information using the frequency difference algorithm to obtain signal frequency difference information for receiving the mobile message between each benchmark verification point and the reference verification point.

[0153] According to an embodiment of the present disclosure, the fourth processing module 550 includes a seventh processing submodule and an analysis submodule.

[0154] The seventh processing submodule is used to process the time difference information, the signal frequency difference information and the arrival angle information according to the objective function to obtain an estimation result.

[0155] The analysis submodule is configured to analyze the estimation result to obtain a security verification result associated with the mobile message.

[0156] According to an embodiment of the present disclosure, the analysis submodule includes a second determination unit, a first judgment unit, and a second judgment unit.

[0157] The second determining unit is configured to determine difference information between the estimation result and the mobile message.

[0158] The first judgment unit is configured to determine, when the difference information meets a preset threshold, that the security verification result indicates that the mobile message is security information.

[0159] The second judgment unit is configured to determine, when the difference information does not meet a preset threshold, that the security verification result indicates that the mobile message is false information.

[0160] Figure 6 A block diagram of an electronic device suitable for implementing a mobile message security verification method for a near-space platform according to an embodiment of the present disclosure is schematically shown.

[0161] like Figure 6 As shown, the electronic device 600 according to an embodiment of the present disclosure includes a processor 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage part 608 into a random access memory (RAM) 603. The processor 601 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or a related chipset and / or a dedicated microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 601 may also include an onboard memory for caching purposes. The processor 601 may include a single processing unit or multiple processing units for executing different actions of the method flow according to an embodiment of the present disclosure.

[0162] Various programs and data required for the operation of the electronic device 600 are stored in the RAM 603. The processor 601, ROM 602, and RAM 603 are connected to each other via a bus 604. The processor 601 executes the various operations of the method flow according to the embodiment of the present disclosure by executing the programs in the ROM 602 and / or RAM 603. It should be noted that the programs may also be stored in one or more memories other than the ROM 602 and RAM 603. The processor 601 may also execute the various operations of the method flow according to the embodiment of the present disclosure by executing the programs stored in the one or more memories.

[0163] According to an embodiment of the present disclosure, the electronic device 600 may further include an input / output (I / O) interface 605, which is also connected to the bus 604. The electronic device 600 may further include one or more of the following components connected to the I / O interface 605: an input portion 606 including a keyboard, a mouse, etc.; an output portion 607 including devices such as a cathode ray tube (CRT), a liquid crystal display (LCD), and a speaker; a storage portion 608 including a hard disk; and a communication portion 609 including a network interface card such as a LAN card or a modem. The communication portion 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed in the drive 610 as needed, so that a computer program read therefrom can be installed into the storage portion 608 as needed.

[0164] The present disclosure also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiments, or may exist independently and not be incorporated into the device / apparatus / system. The computer-readable storage medium carries one or more programs, and when executed, implements the method according to the embodiments of the present disclosure.

[0165] According to an embodiment of the present disclosure, a computer-readable storage medium may be a non-volatile computer-readable storage medium, such as but not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, apparatus, or device. For example, according to an embodiment of the present disclosure, a computer-readable storage medium may include the ROM 602 and / or RAM 603 described above and / or one or more memories other than ROM 602 and RAM 603.

[0166] Embodiments of the present disclosure also include a computer program product, comprising a computer program containing program code for executing the method shown in the flowchart. When the computer program product is executed in a computer system, the program code is used to cause the computer system to implement the mobile message security verification method for a near-space platform provided in embodiments of the present disclosure.

[0167] The computer program executes the above functions defined in the system / device of the embodiment of the present disclosure when the processor 601 executes the computer program. According to the embodiment of the present disclosure, the system, device, module, unit, etc. described above can be implemented by a computer program module.

[0168] In one embodiment, the computer program may be stored on a tangible storage medium such as an optical storage device or a magnetic storage device. In another embodiment, the computer program may be transmitted and distributed in the form of a signal on a network medium, downloaded and installed via the communication portion 609, and / or installed from a removable medium 611. The program code contained in the computer program may be transmitted using any appropriate network medium, including but not limited to wireless, wired, or any suitable combination thereof.

[0169] In such an embodiment, the computer program can be downloaded and installed from a network via the communication section 609, and / or installed from a removable medium 611. When the computer program is executed by the processor 601, the above-described functions defined in the system of the embodiment of the present disclosure are performed. According to the embodiment of the present disclosure, the systems, devices, means, modules, units, etc. described above can be implemented by computer program modules.

[0170] According to an embodiment of the present disclosure, the program code for executing the computer program provided by the embodiment of the present disclosure can be written in any combination of one or more programming languages. Specifically, these computer programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, languages ​​such as Java, C++, python, "C" or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (for example, using an Internet service provider to connect via the Internet).

[0171] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the above-mentioned module, program segment, or a part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0172] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of this disclosure may be combined and / or coupled in various ways, even if such combinations and / or couplings are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure may be combined and / or coupled in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or couplings are intended to fall within the scope of this disclosure.

[0173] The embodiments of the present disclosure are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A method for mobile message security verification on a near-space platform, comprising: Obtaining space state messages of respective multiple verification points and movement messages of a near-space platform, wherein the verification points represent aircraft or ground stations, the multiple verification points include benchmark verification points and reference verification points, and the movement messages are sent by the near-space platform to the verification points; Processing a plurality of the spatial state messages and the movement messages using a time difference algorithm to obtain time difference information of receiving the movement message between each of the benchmark verification points and the reference verification point; Processing the plurality of the spatial state messages and the movement messages using an arrival angle algorithm to obtain arrival angle information of each verification point receiving the movement message; Processing the plurality of spatial state messages and the movement messages using a frequency difference algorithm to obtain signal frequency difference information of the movement messages received between each benchmark verification point and a reference verification point; The time difference information, the signal frequency difference information and the arrival angle information are processed according to an objective function to obtain a security verification result associated with the mobile message.

2. The method according to claim 1, wherein The spatial status message includes first location information, and the movement message includes second location information; The processing of the plurality of spatial state messages and the movement messages by using a time difference algorithm to obtain time difference information of receiving the movement message between each benchmark verification point and the reference verification point includes: performing difference processing on the first position information and the second position information of the reference verification point to obtain reference distance information corresponding to each reference verification point; performing difference processing on the first position information and the second position information of the reference verification point to obtain reference distance information corresponding to the reference verification point; The time difference algorithm is used to process each of the benchmark distance information and the reference distance information to obtain the time difference information between each of the benchmark verification points and the reference verification point, wherein the time difference information is as shown in formula (1): （1）； in, is the time difference information, is the reference distance information corresponding to the mth reference verification point, is the reference distance information corresponding to the reference verification point, is the propagation speed of electromagnetic waves in free space, is error information for measuring the time difference information.

3. The method according to claim 2, wherein: The processing of the plurality of space status messages and the movement messages by using an arrival angle algorithm to obtain arrival angle information of each verification point receiving the movement message includes: Determining first azimuth angle information and first elevation angle information of the mobile message arriving at the verification point; Based on the arrival angle algorithm, the first azimuth information and the first elevation information are formatted to obtain second azimuth information and second elevation information, and the second azimuth information and the second elevation information are used as the arrival angle information corresponding to each of the verification points.

4. The method according to claim 3, wherein: The format conversion of the first azimuth information and the first elevation information based on the arrival angle algorithm to obtain second azimuth information and second elevation information includes: Determining distance information of each verification point according to the benchmark distance information and the reference distance information; Projecting the distance information to obtain projection information corresponding to each verification point; Performing format conversion on the first azimuth angle information using the projection information to obtain the second azimuth angle information; The first elevation angle information is format-converted using the distance information to obtain the second elevation angle information.

5. The method according to claim 4, wherein The second azimuth information is shown in formula (2), and the second elevation information is shown in formula (3): （2）； ；（3） in, is the projection information, To verify the distance between the point and the near-space platform, is the second location information, is the first location information, is the first azimuth information, is the first elevation angle information, and are the measurement errors of azimuth and elevation, respectively.

6. The method according to claim 2, wherein: The space status message further includes first speed information, and the movement message further includes second speed information; The using a frequency difference algorithm to process the plurality of spatial state messages and the movement messages to obtain signal frequency difference information of the movement message received between each benchmark verification point and a reference verification point includes: determining first signal frequency information associated with the mobile message; Performing Doppler effect processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain second signal frequency information corresponding to each reference verification point; Performing Doppler effect mechanism processing on the first signal frequency information, the first speed information, the second speed information, and the reference distance information to obtain third signal frequency information corresponding to the reference verification point; Performing difference processing on the second signal frequency information and the third signal frequency information using the frequency difference algorithm to obtain signal frequency difference information for receiving the mobile message between each benchmark verification point and the reference verification point, wherein the signal frequency difference information is as shown in formula (4); （4）； in, is the signal frequency difference information, is the first signal frequency information, is the first speed information corresponding to the mth reference verification point, is the first speed information corresponding to the reference verification point, is the second speed information, is the error of the signal frequency difference information.

7. The method according to claim 1, wherein The processing of the time difference information, the signal frequency difference information, and the arrival angle information according to the objective function to obtain a security verification result associated with the mobile message includes: Processing the time difference information, the signal frequency difference information, and the arrival angle information according to an objective function to obtain an estimation result; The estimation result is analyzed to obtain a security verification result associated with the mobile message.

8. The method according to claim 7, wherein: The analyzing and processing the estimation result to obtain a security verification result associated with the mobile message includes: determining difference information between the estimation result and the mobile message; When the difference information meets a preset threshold, the security verification result indicates that the mobile message is secure information.

9. The method according to claim 8, wherein The analyzing and processing the estimation result to obtain a security verification result associated with the mobile message further includes: When the difference information does not meet a preset threshold, the security verification result indicates that the mobile message is false information.

10. A mobile message security verification device for a near-space platform, comprising: an acquisition module, configured to acquire space status messages of respective multiple verification points and movement messages of a near-space platform, wherein the verification points represent aircraft or ground stations, the multiple verification points include benchmark verification points and reference verification points, and the movement messages are sent by the near-space platform to the verification points; A first processing module is configured to process the plurality of spatial state messages and the movement messages using a time difference algorithm to obtain time difference information of receiving the movement message between each benchmark verification point and the reference verification point; A second processing module is configured to process the plurality of space state messages and the movement messages using an arrival angle algorithm to obtain arrival angle information of each verification point receiving the movement message; a third processing module, configured to process the plurality of spatial state messages and the movement messages using a frequency difference algorithm to obtain signal frequency difference information of the movement message received between each benchmark verification point and a reference verification point; and A fourth processing module is configured to process the time difference information, the signal frequency difference information, and the arrival angle information according to an objective function to obtain a security verification result associated with the mobile message.

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