An air traffic control auxiliary identification method and system based on individual identification technology

Abstract

The application discloses an air traffic control auxiliary identification method and system based on individual identification technology, and the method comprises the following steps: an individual identification parameter extraction module extracts a first individual identification parameter from a response signal received by an S-mode air traffic control interrogator; an individual identification parameter fine selection module generates a first receiving window and a second receiving window, and filters the first individual identification parameter in sequence to obtain a second individual identification parameter; a crosstalk parameter elimination module forms a third individual identification parameter according to the second individual identification parameter; a target and parameter pairing module forms third response target data with additional third individual identification parameters according to the third individual identification parameter and second response target data; and an auxiliary identification processing unit receives the third response target data and performs double matching according to a target address and individual identification parameters. The application can effectively identify illegal targets that impersonate civil aviation passenger planes and guarantee normal civil aviation order.

Description

Technical Field

[0001] This invention relates to the field of air traffic control secondary radar technology, and in particular to an air traffic control-assisted identification method and system based on individual identification technology. Background Technology

[0002] In the current S-mode, the air traffic control interrogator queries the target in the airspace by address and then receives the target aircraft's response signal to determine the target's attributes and obtain information.

[0003] Individual identification technology based on signal characteristics uniquely identifies signal transmitters by analyzing and extracting unintentional modulation information from radiation source signals. Also known as radiation source signal fingerprinting technology, it has technical and tactical advantages such as obtaining objective and true features, high identification accuracy, no need for cryptographic support, wide applicability of signals, and long operating distance.

[0004] The S-mode air traffic control interrogation system has the following drawbacks in target recognition: if the target aircraft impersonates a civil aviation address and illegally answers the air traffic control interrogation system, the air traffic control interrogation system cannot effectively identify the target aircraft based on the existing technical system and means; it cannot effectively detect changes in aircraft address or changes in aircraft air traffic control equipment. Summary of the Invention

[0005] In view of this, the present invention provides an air traffic control-assisted identification method and system based on individual identification technology. By combining individual identification technology with the Mode S air traffic control interrogator, it can solve the problem that the Mode S air traffic control interrogator cannot distinguish between impersonation and misuse of target aircraft addresses, and expand the airspace aircraft situational awareness capability of ground interrogation equipment.

[0006] This invention discloses an air traffic control-assisted identification method based on individual identification technology, which includes:

[0007] Step 1: The individual identification parameter extraction module extracts the first individual identification parameter from the response signal received by the S-mode air traffic control interrogator and sends the first individual identification parameter to the individual identification parameter fine sorting module.

[0008] Step 2: The individual identification parameter fine-soring module generates a first receiving window and a second receiving window. The first receiving window and the second receiving window sequentially filter the first individual identification parameter to obtain the second individual identification parameter.

[0009] Step 3: The crosstalk parameter removal module removes any crosstalk pulse parameters that may exist in the second body identification parameters, and clusters and fuses multiple valid second body identification parameters to form the third body identification parameters;

[0010] Step 4: The target and parameter pairing module pairs the third entity identification parameter and the second response target data sent by the response target data format conversion module one by one according to the same number of the successful decoding identifier of the response signal, and forms the third response target data with the additional third entity identification parameter.

[0011] Step 5: The auxiliary identification processing unit receives the target data of the third response and performs a dual match according to the target address and individual identification parameters, and forms auxiliary judgment rules based on the matching results.

[0012] Furthermore, prior to step 1, the procedure also includes:

[0013] When the Mode S air traffic control interrogator is conducting a normal interrogation, it transmits a Mode S interrogation signal and receives a corresponding response signal. The response signal is simultaneously sent to the Mode S air traffic control interrogator and the individual identification parameter extraction module. At the same time, the Mode S air traffic control interrogator sends its transmission identifier and the decoding success identifier of the received response signal to the individual identification parameter fine sorting module.

[0014] Further, step 1 includes:

[0015] The individual identification parameter extraction module extracts the first individual identification parameter from the response signal received by the S-mode air traffic control interrogator according to the set signal-to-noise ratio threshold, and sends the first individual identification parameter to the individual identification parameter fine sorting module.

[0016] Further, step 2 includes:

[0017] The individual identification parameter fine-soring module generates a first receiving window based on the transmission identifier sent by the Mode S air traffic control interrogator; and generates a second receiving window based on the successful decoding identifier of the response signal sent by the Mode S air traffic control interrogator. The first receiving window and the second receiving port sequentially filter the first individual identification parameter, and write the number of the successful decoding identifier of the response signal into the data frame of each group of the first individual identification parameter in the second receiving window to obtain the second individual identification parameter. The second individual identification parameter is the individual identification parameter of multiple pulses within a certain period of time.

[0018] Furthermore, step 2 specifically includes:

[0019] After receiving the transmission identifier from the Mode S air traffic control interrogator, the individual identification parameter fine sorting module generates a first receiving window to filter the first individual identification parameter; that is, the first individual identification parameter in the first receiving window is allowed to enter the next step of filtering, and parameters outside the first receiving window are eliminated.

[0020] The individual identification parameter fine-soring module receives the decoding success flag of the response signal, and uses the preset time before the decoding success flag of the response signal as the second receiving window. The second receiving window is used to receive the first filtered individual identification parameter and filter it to generate the second individual identification parameter; wherein, the preset time corresponds to the length of a set of response signal sequences.

[0021] The received response signals are decoded successfully and the identification signals are numbered sequentially and written into the data frames of the first body identification parameters of each group in the second receiving window.

[0022] Furthermore, after step 3 and before step 4, the following steps are also included:

[0023] The response target data format conversion module appends the number of the successful decoding identifier of the response signal to the first response target data output by the Mode S interrogator to form the second response target data.

[0024] Furthermore, the process after step 3 and before step 4 specifically includes:

[0025] The response target data format conversion module receives the first response target data output by the S-mode air traffic control interrogator. According to the correspondence between the decoding success identifier of the response signal and the first response target data, the module appends the corresponding number of the decoding success identifier of the response signal to the first response target data to form the second response target data.

[0026] Further, step 5 includes:

[0027] Match the address field D3_ADDR1 in the third response target data with the address field DX_ADDR0 in the individual feature database, and mark the address matching as successful or unsuccessful.

[0028] The individual identification parameter D3_PAR1 in the third response target data is matched with the parameter DX_PAR0 in the individual feature library, and the match is marked as successful or unsuccessful.

[0029] Furthermore, step 5 also includes: the auxiliary identification processing unit forming auxiliary verification rules based on the results of the double matching; the auxiliary identification processing unit forming auxiliary verification rules based on the results of the double matching includes:

[0030] If the address field D3_ADDR1 of the third response target data and the individual identification parameter D3_PAR1 both match successfully, the identification is considered successful. The individual identification parameter D3_PAR1 is then fused with the parameter DX_PAR0 to form a new individual identification parameter DX_PAR1, and the confidence coefficient is incremented by 1. The higher the number of successful matches, the larger the confidence coefficient.

[0031] If the address field D3_ADDR1 and the individual identification parameter D3_PAR1 of the third response target data both fail to match, an alarm will be issued and the third response target data will be stored in the pending confirmation area of ​​the individual feature database. The third response target data will be updated from the pending confirmation area to the individual feature database. The confidence coefficient of the new target is 0 when the database is created.

[0032] If the address field D3_ADDR1 of the third response target data matches successfully, but the individual identification parameter D3_PAR1 fails to match, an alarm will be issued, and the third response target data will be stored in the pending confirmation area of ​​the individual feature database. If it is later confirmed as a valid aircraft parameter, the individual identification parameter DX_PAR0 corresponding to the address field D3_ADDR1 in the individual feature database will be replaced with the individual identification parameter D3_PAR1. After the parameter is adjusted, the confidence coefficient will be set to 0.

[0033] If the address field D3_ADDR1 of the third response target data fails to match, but the individual identification parameter D3_PAR1 matches successfully, and the address corresponding to the successfully matched parameter is DX_ADDR0, an alarm will be issued, and the third response target data will be placed in the pending confirmation area. If it is later confirmed that the target has changed its address normally, the address field DX_ADDR0 in the individual feature database will be changed to D3_ADDR1, and the confidence coefficient will be set to 0 after the address is updated.

[0034] This invention discloses an air traffic control auxiliary identification system based on individual identification technology, used to implement the air traffic control auxiliary identification method based on individual identification technology described above. It includes: a Mode S air traffic control interrogator, an individual identification processing unit, and an auxiliary identification processing unit; the individual identification processing unit includes an individual identification parameter extraction module, an individual identification parameter fine-sorping module, a crosstalk parameter elimination module, a target and parameter matching module, and a response target data format conversion module.

[0035] Both the Mode S air traffic control interrogator and the individual identification parameter extraction module are connected to the antenna; the individual identification parameter extraction module is connected to the crosstalk parameter elimination module through the individual identification parameter fine selection module; the crosstalk parameter elimination module is connected to the auxiliary identification processing unit through the target and parameter matching module; the Mode S air traffic control interrogator is connected to the target and parameter matching module through the response target data format conversion module.

[0036] Because of the adoption of the above technical solution, the present invention has the following advantages:

[0037] 1. This invention can effectively identify illegal targets impersonating civil aviation passenger aircraft, thus ensuring normal civil aviation order;

[0038] 2. This invention can independently obtain the address of civil aircraft and the status of changes in air traffic control equipment, enriching the means of air traffic control situational monitoring and improving monitoring capabilities. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in the embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0040] Figure 1 This is a schematic diagram of the air traffic control radar-assisted identification principle based on individual identification technology according to an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram illustrating the principle of individual identification parameter filtering in an embodiment of the present invention.

[0042] Figure 3 This is a schematic diagram illustrating the target fusion update after successful address and parameter matching in an embodiment of the present invention.

[0043] Figure 4 This is a schematic diagram illustrating the insertion of new targets into the database when address and parameter matching fails, as per an embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram illustrating the target confirmation management for address matching success and parameter matching failure according to an embodiment of the present invention.

[0045] Figure 6 This is a schematic diagram illustrating the target confirmation management for address matching failure parameters matching success in an embodiment of the present invention. Detailed Implementation

[0046] The present invention will be further described in conjunction with the accompanying drawings and embodiments. The described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art should fall within the protection scope of the present invention.

[0047] The main idea of ​​this invention is as follows: (1) Add an individual identification processing unit to work in conjunction with the S-mode air traffic control interrogation machine to receive air traffic control response signals synchronously; (2) Collect air traffic control response signals in the individual identification processing unit and extract the first individual identification parameter in the response signal synchronously; (3) The individual identification processing unit receives the guidance identifier of the S-mode air traffic control interrogation machine, and filters and manages the individual identification parameters accordingly to form the second individual identification parameter and report it to the auxiliary identification processing unit; (4) Convert the format of the first response target data reported by the S-mode air traffic control interrogation machine, add a synchronous number field, generate the second response target data, and report it to the auxiliary identification processing unit; (5) The auxiliary identification processing unit running on the computer pairs the second individual identification parameter and the second response target data one by one, completes the data matching, and forms the third response target data after pairing; (6) The auxiliary identification processing unit performs authentication management on the individual identification parameters of the third response target data; (7) The auxiliary identification processing unit marks the response target that has not passed the individual identification parameter authentication with an alarm prompt.

[0048] This invention comprises an individual identification processing unit and an auxiliary identification processing unit. The individual identification processing unit operates within an individual identification signal processing hardware circuit, while the auxiliary identification processing unit operates within a computer. The individual identification processing unit extracts individual identification parameters, filters and numbers these parameters based on air traffic control guidance identifiers, and performs format conversion of air traffic control response target data. The auxiliary identification processing unit pairs a second individual identification parameter with the second response target data to form a third response target data, manages the authentication of individual identification parameters, and pushes the auxiliary identification results.

[0049] Since the air traffic control response signal frequency is 1090MHz, a frequency widely used in secondary radar applications, the individual identification processing unit will extract a large number of pulse individual identification parameters at the 1090MHz frequency point. These pulse individual identification parameters need to undergo further screening to remove irrelevant pulses, and the individual identification parameters corresponding to the valid responses will be collected and output. The individual identification unit will then process these parameters according to... Figure 2 The principle is to extract individual identification parameters of effective response pulses.

[0050] See Figure 1 This invention provides an embodiment of an air traffic control-assisted identification method based on individual identification technology, which includes:

[0051] S1: The individual identification parameter extraction module extracts the first individual identification parameter from the response signal received by the S-mode air traffic control interrogator and sends the first individual identification parameter to the individual identification parameter fine sorting module;

[0052] S2: The individual identification parameter fine-soring module generates a first receiving window and a second receiving window. The first receiving window and the second receiving window sequentially filter the first individual identification parameter to obtain the second individual identification parameter.

[0053] S3: The crosstalk parameter elimination module uses a voting mechanism to eliminate possible crosstalk pulse parameters in the second body identification parameter, and clusters and merges multiple valid second body identification parameters to form the third body identification parameter;

[0054] S4: The target and parameter pairing module pairs the third body identification parameter and the second response target data sent by the response target data format conversion module one by one according to the same number of the successful decoding identifier of the response signal, and forms the third response target data with the additional third body identification parameter, thus completing the parameter extraction and pairing of the individual identification unit; the data frame format of the third response target data is shown in Table 1.

[0055] Table 1. Data frame format of the third response target data.

[0056]

[0057]

[0058] S5: The target address matching query module in the auxiliary identification processing unit receives the third response target data and performs a dual match according to the target address and individual identification parameters.

[0059] See Figure 2 It can be seen that the first body recognition parameter, the second body recognition parameter, and the third body recognition parameter are all S-mode response signal pulses.

[0060] In this embodiment, before S1, the following is also included:

[0061] During normal interrogation, the Mode S interrogator transmits a Mode S interrogation signal and receives a corresponding response signal. The response signal is synchronously transmitted to the Mode S interrogator and the Individual Identification Parameter Extraction Module using a circulator and power divider. At the same time, the Mode S interrogator sends its transmission identifier (AM) and the decoding success identifier (JM) of the received response signal to the Individual Identification Parameter Fine-Sorting Module.

[0062] In this embodiment, S1 includes:

[0063] The individual identification parameter extraction module extracts the first individual identification parameter at a frequency of 1090MHz from the response signal received by the S-mode air traffic control interrogator according to the set signal-to-noise ratio threshold. This first individual identification parameter contains a large number of useless pulses and needs to be further filtered. The first individual identification parameter is then sent to the individual identification parameter fine sorting module.

[0064] In this embodiment, S2 includes:

[0065] The individual identification parameter fine-soring module generates a first receiving window based on the transmission identifier sent by the Mode S air traffic control interrogator; and generates a second receiving window based on the successful decoding identifier of the response signal sent by the Mode S air traffic control interrogator. The first receiving window and the second receiving port sequentially filter the first individual identification parameter, and write the number of the successful decoding identifier of the response signal into the data frame of each group of the first individual identification parameter in the second receiving window to obtain the second individual identification parameter. The second individual identification parameter is the individual identification parameter of multiple pulses within a certain period of time.

[0066] In this embodiment, S2 specifically includes:

[0067] After receiving the transmission identifier from the Mode S air traffic control interrogator, the individual identification parameter fine selection module generates a first receiving window to filter the first individual identification parameter; that is, the first individual identification parameter in the first receiving window is allowed to enter the next step of filtering, and parameters outside the first receiving window are eliminated; the first receiving window can be an effective receiving window with a length of 3 milliseconds (corresponding to targets within a range of 450 kilometers);

[0068] The individual identification parameter fine-soring module receives the decoding success flag of the response signal, and uses the preset time before the decoding success flag of the response signal as the second receiving window. The second receiving window is used to receive the first filtered individual identification parameter and filter it to generate the second individual identification parameter. The preset time corresponds to the length of a set of response signal sequences. The preset time can be 130 microseconds.

[0069] The received response signal is decoded successfully, and the identification signal is numbered sequentially (the value range is 0 to 65535, and the counting is repeated cyclically). Figure 2 (where JM_IDX is the number of the decoding flag JM), and is sequentially written into the data frame of the first body identification parameter of each group within the second receiving window; for example... Figure 2 The individual identification parameter JM number for pulses P3 and P4 is N+1, and the individual identification parameter JM number for pulses P8 and P9 is N+3.

[0070] In this embodiment, after S3 and before S4, it also includes:

[0071] The response target data format conversion module appends the number of the successful decoding identifier of the response signal to the first response target data output by the Mode S interrogator to form the second response target data.

[0072] In this embodiment, after S3 and before S4, it also specifically includes:

[0073] The response target data format conversion module receives the first response target data output by the S-mode air traffic control interrogator. According to the correspondence between the decoding success identifier of the response signal and the first response target data, the module appends the corresponding number of the decoding success identifier of the response signal to the first response target data to form the second response target data.

[0074] In this embodiment, the auxiliary identification processing unit receives the third response target data and follows the instructions. Figure 1 The principle shown executes S5, which includes:

[0075] Match the aircraft address D3_ADDR1 in the third response target data with the address DX_ADDR0 in the target address and individual feature database, and mark the address matching as successful or unsuccessful;

[0076] The individual identification parameter D3_PAR1 in the third response target data is matched with the parameter DX_PAR0 in the individual feature library, and the match is marked as successful or unsuccessful.

[0077] In this embodiment, S5 further includes: an auxiliary identification processing unit forming auxiliary verification rules based on the results of the double matching; the auxiliary identification processing unit forming auxiliary verification rules based on the results of the double matching includes:

[0078] If the target address D3_ADDR1 of the third response target data and the individual identification parameter D3_PAR1 both match successfully, the identification is considered successful. The individual identification parameter D3_PAR1 is then fused with the parameter DX_PAR0 to form a new individual identification parameter DX_PAR1, and the confidence coefficient is incremented by 1. The higher the number of successful matches, the larger the confidence coefficient.

[0079] If the target address D3_ADDR1 of the third response target data and the individual identification parameter D3_PAR1 both fail to match, an alarm will be issued, and the third response target data will be stored in the pending confirmation area of ​​the individual feature database. The third response target data will be updated from the pending confirmation area to the individual feature database. The confidence coefficient of the new target is 0 when the database is built.

[0080] If the target address D3_ADDR1 of the third response target data matches successfully, but the individual identification parameter D3_PAR1 fails to match, an alarm is issued, and the third response target data is stored in the pending confirmation area of ​​the individual feature database. If it is later confirmed that the target has changed from an aircraft to air traffic control equipment, the individual identification parameter DX_PAR0 corresponding to the target address D3_ADDR1 in the individual feature database is replaced with the individual identification parameter D3_PAR1. After the parameter is adjusted, the confidence coefficient is set to 0.

[0081] If the target address D3_ADDR1 of the third response target data fails to match, but the individual identification parameter D3_PAR1 matches successfully, and the address corresponding to the successfully matched parameter is DX_ADDR0, an alarm will be issued, and the third response target data will be placed in the pending confirmation area. If it is later confirmed that the target has changed its address normally, the address DX_ADDR0 in the individual feature database will be changed to address D3_ADDR1. After the address is updated, the confidence coefficient will be set to 0.

[0082] This invention provides an embodiment of an air traffic control auxiliary identification system based on individual identification technology, used to implement the air traffic control auxiliary identification method based on individual identification technology described in the above embodiment. This embodiment includes: a Mode S air traffic control interrogator, an individual identification processing unit, and an auxiliary identification processing unit; the individual identification processing unit includes an individual identification parameter extraction module, an individual identification parameter fine selection module, a crosstalk parameter elimination module, a target and parameter matching module, and a response target data format conversion module;

[0083] Both the Mode S air traffic control interrogator and the individual identification parameter extraction module are connected to the antenna; the individual identification parameter extraction module is connected to the crosstalk parameter elimination module through the individual identification parameter fine selection module; the crosstalk parameter elimination module is connected to the auxiliary identification processing unit through the target and parameter matching module; the Mode S air traffic control interrogator is connected to the target and parameter matching module through the response target data format conversion module.

[0084] The key technical points and areas to be protected in this invention are as follows:

[0085] A collaborative working scenario for individual identification and Mode S interrogation is constructed based on a circulator and power divider. The initial individual identification parameters are jointly filtered by a first receiving window based on the transmit identifier (AM) and a second receiving window based on the decoder identifier. Possible crosstalk parameters are then eliminated using a voting mechanism. Finally, multiple valid pulse parameters are clustered and fused to form high-quality individual identification parameters. Individual identification pulse parameters are paired with Mode S interrogation target data, associating them both by time and by pulse cluster number to ensure accurate target pairing. A dual matching process is performed based on the target address and individual identification parameters, and four auxiliary verification rules are formed based on the matching results.

[0086] Rule 1: If both the aircraft address and individual identification parameters match successfully, the new individual identification parameter D3_PAR1 is weighted and fused with the historical individual identification parameter DX_PAR0 in the database to form the fused individual identification parameter, which is then updated in the target individual feature database. Figure 3 As shown;

[0087] Rule 2: If both the aircraft address and individual identification parameters fail to match, an unknown target alarm is issued, and the new individual identification parameters are stored in the unconfirmed individual feature database. Once the target is confirmed, these parameters are updated in the target individual feature database. Figure 4 As shown;

[0088] Rule 3: If the aircraft address matches successfully but the individual identification parameters fail to match, a parameter mismatch alarm will be issued, and a pending confirmation area will be created to store the target data. Upon successful confirmation, the corresponding individual identification parameters in the individual identification database will be replaced. Figure 5 As shown;

[0089] Rule 4: If aircraft address matching fails but individual identification parameters match successfully, an address mismatch alarm will be issued, and a pending confirmation area will be created to store the target data. Upon successful confirmation, the address of the corresponding data in the individual identification database will be replaced with the address of the pending confirmation data. Figure 6 As shown.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. An air traffic control-assisted identification method based on individual identification technology, characterized in that, include: Step 1: The individual identification parameter extraction module extracts the first individual identification parameter from the response signal received by the Mode S air traffic control interrogator and sends the first individual identification parameter to the individual identification parameter fine sorting module; Step 2: The individual identification parameter fine-soring module generates a first receiving window and a second receiving window. The first receiving window and the second receiving window sequentially filter the first individual identification parameter to obtain the second individual identification parameter. Step 3: The crosstalk parameter elimination module eliminates any crosstalk pulse parameters that may exist in the second body identification parameters, and clusters and merges multiple valid second body identification parameters to form the third body identification parameters; Step 4: The target and parameter pairing module pairs the third entity identification parameter and the second response target data sent by the response target data format conversion module one by one according to the same number of the successful decoding identifier of the response signal, and forms the third response target data with the additional third entity identification parameter. Step 5: The auxiliary identification processing unit receives the third response target data and performs a dual match according to the target address and individual identification parameters.

2. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, Before step 1, the following are also included: When the Mode S air traffic control interrogator is conducting a normal interrogation, it transmits a Mode S interrogation signal and receives a corresponding response signal. The response signal is simultaneously sent to the Mode S air traffic control interrogator and the individual identification parameter extraction module. At the same time, the Mode S air traffic control interrogator sends its transmission identifier and the decoding success identifier of the received response signal to the individual identification parameter fine sorting module.

3. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, Step 1 includes: The individual identification parameter extraction module extracts the first individual identification parameter from the response signal received by the S-mode air traffic control interrogator according to the set signal-to-noise ratio threshold, and sends the first individual identification parameter to the individual identification parameter fine sorting module.

4. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, Step 2 includes: The individual identification parameter fine-soring module generates a first receiving window based on the transmission identifier sent by the Mode S air traffic control interrogator; and generates a second receiving window based on the successful decoding identifier of the response signal sent by the Mode S air traffic control interrogator. The first receiving window and the second receiving port sequentially filter the first individual identification parameter, and write the number of the successful decoding identifier of the response signal into the data frame of each group of the first individual identification parameter in the second receiving window to obtain the second individual identification parameter. The second individual identification parameter is the individual identification parameter of multiple pulses within a certain period of time.

5. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, Step 2 specifically includes: After receiving the transmission identifier from the Mode S air traffic control interrogator, the individual identification parameter fine sorting module generates a first receiving window to filter the first individual identification parameter; that is, the first individual identification parameter in the first receiving window is allowed to enter the next step of filtering, and parameters outside the first receiving window are eliminated. The individual identification parameter fine-soring module receives the decoding success flag of the response signal, and uses the preset time before the decoding success flag of the response signal as the second receiving window. The second receiving window is used to receive the first filtered individual identification parameter and filter it to generate the second individual identification parameter; wherein, the preset time corresponds to the length of a set of response signal sequences. The received response signals are decoded successfully and the identification signals are numbered sequentially and written into the data frames of the first body identification parameters of each group in the second receiving window.

6. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, After step 3 and before step 4, the following is also included: The response target data format conversion module appends the number of the successful decoding identifier of the response signal to the first response target data output by the Mode S interrogator to form the second response target data.

7. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, After step 3 and before step 4, the following is also specifically included: The response target data format conversion module receives the first response target data output by the S-mode air traffic control interrogator. According to the correspondence between the decoding success identifier of the response signal and the first response target data, the module appends the corresponding number of the decoding success identifier of the response signal to the first response target data to form the second response target data.

8. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, Step 5 includes: Match the address field D3_ADDR1 in the third response target data with the address field DX_ADDR0 in the individual feature database, and mark the address matching as successful or unsuccessful. The individual identification parameter D3_PAR1 in the third response target data is matched with the parameter DX_PAR0 in the individual feature library, and the match is marked as successful or unsuccessful.

9. The air traffic control-assisted identification method based on individual identification technology according to claim 1, characterized in that, Step 5 further includes: the auxiliary identification processing unit forming auxiliary verification rules based on the results of the double matching; the auxiliary identification processing unit forming auxiliary verification rules based on the results of the double matching includes: If the address field D3_ADDR1 of the third response target data and the individual identification parameter D3_PAR1 both match successfully, the identification is considered successful. The individual identification parameter D3_PAR1 is then fused with the parameter DX_PAR0 to form a new individual identification parameter DX_PAR1, and the confidence coefficient is incremented by 1. The higher the number of successful matches, the larger the confidence coefficient. If the address field D3_ADDR1 and the individual identification parameter D3_PAR1 of the third response target data both fail to match, an alarm will be issued and the third response target data will be stored in the pending confirmation area of ​​the individual feature database. The third response target data will be updated from the pending confirmation area to the individual feature database. The confidence coefficient of the new target is 0 when the database is created. If the address field D3_ADDR1 of the third response target data matches successfully, but the individual identification parameter D3_PAR1 fails to match, an alarm will be issued, and the third response target data will be stored in the pending confirmation area of ​​the individual feature database. If it is later confirmed as a valid aircraft parameter, the individual identification parameter DX_PAR0 corresponding to the address field D3_ADDR1 in the individual feature database will be replaced with the individual identification parameter D3_PAR1. After the parameter is adjusted, the confidence coefficient will be set to 0. If the address field D3_ADDR1 of the third response target data fails to match, but the individual identification parameter D3_PAR1 matches successfully, and the address field corresponding to the successfully matched parameter is DX_ADDR0, an alarm will be issued, and the third response target data will be placed in the pending confirmation area. If it is later confirmed that the target has changed its address normally, the address field in the individual feature database will be changed from DX_ADDR0 to D3_ADDR1, and the confidence coefficient will be set to 0 after the address is updated.

10. An air traffic control-assisted identification system based on individual identification technology, used to implement the air traffic control-assisted identification method based on individual identification technology as described in any one of claims 1 to 9, characterized in that, include: S-mode air traffic control interrogator, individual identification processing unit and auxiliary identification processing unit; The individual identification processing unit includes an individual identification parameter extraction module, an individual identification parameter fine sorting module, a crosstalk parameter elimination module, a target and parameter matching module, and a response target data format conversion module; Both the Mode S air traffic control interrogator and the individual identification parameter extraction module are connected to the antenna; the individual identification parameter extraction module is connected to the crosstalk parameter elimination module through the individual identification parameter fine selection module; the crosstalk parameter elimination module is connected to the auxiliary identification processing unit through the target and parameter matching module; the Mode S air traffic control interrogator is connected to the target and parameter matching module through the response target data format conversion module.

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