JP7007079B2 - ADS-B report acquisition device and method - Google Patents

Description

The present invention relates to an ADS-B notification acquisition device and a method.

In Automatic Dependent Surveillance-Broadcast (ADS-B), an on-board device mounted on an aircraft broadcasts aircraft information including a position based on a positioning result by the navigation device of the aircraft. By receiving the broadcast by a ground device, it is possible to acquire the position of the aircraft.

By receiving broadcasts from multiple aircraft with the ADS-B notification acquisition device on the ground, it is assumed that the positional relationship between aircraft will be grasped and that it will be used for air traffic control to secure a safe interval between aircraft. There is.

The position report from the aircraft by ADS-B is spontaneously transmitted from the aircraft, and even if an erroneous position report is broadcast due to a failure of the onboard equipment of the aircraft, etc., it is on the ground. It cannot be detected on the device side. For this reason, there is a problem that air traffic control is performed due to an erroneous position report, and as a result, a safety interval between aircraft cannot be secured.

Techniques related to solving this problem are disclosed in Patent Document 1 and Patent Document 2. For example, Patent Document 1 discloses an ADS-B inspection device that inspects the reliability of an ADS-B signal transmitted from an aircraft. The ADS-B inspection device disclosed in Patent Document 1 receives an ADS-B signal transmitted from an aircraft, and receives a response signal from the aircraft received by an SSR (SSR: Secondary Surveillance Radar). get. The ADS-B inspection device compares the position of the aircraft included in the ADS-B signal with the position of the aircraft included in the response signal, and if they do not match, the ADS-B signal is inspected as unreliable. Output the result.

Further, the ADS-B ground station disclosed in Patent Document 2 asks the aircraft that newly created the track information based on the received ADS-B signal a mode S individual question immediately after the creation of the track information. The response signal is received and decoded to acquire DBC and position information, and the distance to the aircraft is calculated based on the position information. Further, the ADS-B ground station acquires distance information based on the transmission timing of the mode S individual inquiry signal and the reception timing of the mode S individual response signal as its response. The ADS-B ground station determines whether the DBC and the distance information match.

Japanese Unexamined Patent Publication No. 2008-130047 Japanese Unexamined Patent Publication No. 2008-146450

However, in the technique described in Patent Document 1, as described above, the positions of the aircraft included in the ADS-B signal and the response signal are compared and determined. Both the compared positions are measured by the equipment in the aircraft. Therefore, it may be difficult to improve the reliability contained in the ADS-B signal.

Further, in the technique described in Patent Document 2, the ADS-B ground station sends and receives the ADS-B signal and the mode S individual inquiry signal and the response signal to and from the aircraft by an omnidirectional antenna. Therefore, it is expected that the distance measurement will be affected by radio wave interference and the like.

An object of the present invention is an ADS-B notification acquisition device and method capable of detecting on the ground side that an erroneous position notification has been broadcast due to measurement in an aircraft without being affected by radio wave interference due to distance measurement. Is to provide.

The ADS-B notification acquisition device according to one aspect of the present invention includes a sector antenna that can transmit and receive to and from an aircraft existing in a limited transmission and reception coverage area, and a receiving station that receives a position report from the aircraft by the sector antenna. It has a distance measuring device that measures the distance to the aircraft by the sector antenna, and a position collating unit that collates the distance with the position included in the position report.

Further, in the ADS-B notification acquisition method according to another aspect of the present invention, the position notification is received from the aircraft by the sector antenna that can be transmitted and received to and from the aircraft existing in the limited transmission and reception coverage area, and the aircraft is received by the sector antenna. The distance to the distance is measured, and the distance is collated with the position included in the position report.

According to the present invention, it is possible to detect on the ground side that an erroneous position report is broadcast due to measurement in an aircraft without being affected by radio wave interference due to distance measurement.

FIG. 1 is a block diagram showing the configuration of the first embodiment. FIG. 2 is an explanatory diagram illustrating a schematic configuration and operation of the first embodiment. FIG. 3 is a flowchart showing the operation of the first embodiment. FIG. 4 is a block diagram showing the configuration of the first modification of FIG. 1. FIG. 5 is a flowchart showing the operation of FIG. FIG. 6 is a block diagram showing the configuration of the second modification. FIG. 7 is a flowchart showing the operation of FIG. FIG. 8 is a diagram showing an example of the configuration of an information processing apparatus that realizes each part of FIGS. 1, 4, and 6.

Hereinafter, the ADS-B notification acquisition device of the present invention will be described with reference to the drawings. FIG. 2 is an explanatory diagram illustrating a schematic configuration and operation of the first embodiment.

As shown in FIG. 2, the ADS-B notification acquisition device 1 includes a transmission / reception station 12 that receives a position notification 40 broadcast from an aircraft 30 by a sector antenna 11. The sector antenna 11 is configured so that a plurality of element antennas having directivity are arranged in a certain angle range when viewed from the antenna to obtain directivity covering a predetermined direction. By selecting and using one element antenna of the sector antenna 11, for example, as shown in FIG. 2, transmission / reception can be performed with the aircraft 30 existing in the limited transmission / reception coverage area 11a.

Further, the ADS-B notification acquisition device 1 measures the distance to the aircraft by using, for example, a method using the question / answer of the SSR mode S method. That is, the ADS-B notification acquisition device 1 transmits the SSR mode S method question signal 41a and receives the SSR mode S method response signal 41b from the aircraft 30 as shown in FIG. Since the signals of the ADS-B and the SSR mode S system have the same format, the transmission / reception station 12 can be shared.

The ADS-B notification acquisition device 1 is a spherical surface 100 obtained based on the distance to the aircraft measured by using the question / answering method of the SSR mode S method, and the position 110 included in the position notification 40. The information is collated to determine whether the spherical surface 100 and the position 110 match.

When the position 110 included in the position report 40 matches the spherical surface 100 based on the measured distance, the ADS-B report acquisition device 1 determines that the position report is correct and transmits the position report to an air traffic control device (not shown). Further, when the position 110 included in the position report 40 does not match the spherical surface 100 based on the measured distance, the ADS-B report acquisition device 1 determines that the position report is incorrect, and determines that the position report is incorrect. Reject the location report 40 that was made. That is, the position collation unit 13 does not transmit the position report 40 determined to be incorrect to the air traffic control device. Alternatively, information indicating that the position information is explicitly incorrect is added to the position information 40 and transmitted.

With such a configuration, the ADS-B notification acquisition device 1 of the present embodiment can be controlled so as not to be used for air traffic control when an erroneous position notification 40 is broadcast from the aircraft 30. As a result, it is not necessary to refer to erroneous position information in air traffic control, and the safety of air traffic control operation is improved. Further, the ADS-B notification acquisition device 1 of the present embodiment uses the sector antenna 11 having a narrowed radio wave radiation range, so that even if the influence of radio wave interference or the like is expected due to the distance measurement, the transmission / reception station 12 and the distance measurement It is possible to limit the range of influence on the device 13.

FIG. 1 is a block diagram showing a configuration of a first embodiment of the present invention. As shown in FIG. 1, the ADS-B notification acquisition device 1 notifies the position from the aircraft 30 by the sector antenna 11 capable of transmitting and receiving to and from the aircraft 30 existing in the limited transmission / reception coverage area 11a, and the sector antenna 11. The transmission / reception station 12 for receiving 40 is provided. Further, the ADS-B notification acquisition device 1 has a distance measuring unit 13 that measures the distance to the aircraft 30 by the sector antenna 11, and a spherical surface 100 on which the aircraft 30 is assumed to exist based on the distance measured by the distance measuring unit 13. The spherical surface calculation unit 14 for calculation is provided. A position matching unit 15 for collating the spherical surface calculated by the spherical surface calculation unit 14 with the position included in the position notification 40 is provided.

The distance measuring unit 13 measures the distance to the aircraft 30 when the position notification 40 is received from the aircraft 30. The ranging unit 13 uses, for example, a method using a question / answer of the SSR mode S method. That is, the ranging unit 13 transmits the transmission signal 41a of the SSR mode S method using the sector antenna 11 and the transmission / reception station 12, and receives the reception signal 41b of the SSR mode S method from the aircraft 30. Since the signals of the ADS-B and the SSR mode S system have the same format, the sector antenna 11 and the transmission / reception station 12 can be shared. The distance measuring unit 13 measures the distance from the time difference between the transmission time Ta at which the sector antenna 11 transmits the question signal 41a and the reception time Tb at which the sector antenna 11 receives the response signal 41b to the aircraft 30.

The spherical surface calculation unit 14 calculates a spherical surface 100 having a radius measured by the distance measuring unit 13 with the sector antenna 11 as the center.

The position collation unit 15 acquires the information of the position 110 included in the position report 40 from the transmission / reception station 12. Further, the position matching unit 15 receives the spherical surface 100 calculated based on the distance to the aircraft 30 measured by the distance measuring unit 13 from the spherical surface calculating unit 14. The position collation unit 15 collates the calculated spherical surface 100 with the position 110.

The position collating unit 15 sets an error range that may be determined to match in advance. The position collation unit 15 considers a preset error range and performs collation including the error range. That is, the position collation unit 15 performs collation by determining whether the gap between the position 110 included in the position report 40 and the spherical surface 100 based on the measured distance is within the set error range.

When the position matching unit 15 matches the spherical surface 100 based on the measured distance at the position 110 included in the position report 40, the ADS-B report acquisition device 1 determines that the position report is correct, and the aviation (not shown). Send to the control device. That is, when the gap between the position 110 included in the position report 40 and the spherical surface 100 based on the measured distance is within the set error range, the position collation unit 15 determines that the position report is correct and does not show it. Send to the air traffic control device. If the position 110 included in the position report 40 does not match the spherical surface 100 based on the measured distance, the position report 40 is rejected and not transmitted to the air traffic control device. That is, if the gap between the position 110 included in the position report 40 and the spherical surface 100 based on the measured distance is not within the set error range, the position collation unit 15 determines that the position report is incorrect and positions the position. Reject the report 40. That is, the position collation unit 13 does not transmit the position report 40 determined to be incorrect to the air traffic control device. Alternatively, information indicating that the position information is explicitly incorrect is added to the position information 40 and transmitted.

It should be noted that each component of the ADS-B notification acquisition device shown in FIG. 1 and the modified example described later shows a block of functional units. A part or all of each component of the ADS-B notification acquisition device of the present embodiment and the modification described later may be realized by any combination of the information processing device 50 and the program as shown in FIG. 8, for example. .. As an example, the information processing apparatus 50 includes the following configurations.

-CPU (Central Processing Unit) 51
-ROM (Read Only Memory) 52
-RAM (Random Access Memory) 53
-Program 54 loaded into RAM 53
A storage device 55 for storing the program 54.
A drive device 57 that reads and writes the recording medium 56.
-Communication interface 58 connected to the communication network 59
-I / O interface 60 for inputting / outputting data
-Bus 61 connecting each component
Each component of the ADS-B notification acquisition device of the present embodiment and the modification described later is realized by the CPU 51 acquiring and executing the program 54 that realizes these functions. The program 54 that realizes the functions of each component of each device is stored in, for example, a storage device 55, a ROM 52, or a RAM 53 in advance, and is read by the CPU 51 as needed.

The program 54 may be supplied to the CPU 51 via the communication network 59, or may be stored in the recording medium 56 in advance, and the drive device 57 may read the program and supply the program to the CPU 51.

There are various modifications in the method of realizing the ADS-B notification acquisition device of this embodiment and the modifications described later. For example, each component of the ADS-B report acquisition device may be realized by any combination of an information processing device and a program that are separate for each component. Further, a plurality of components included in each device may be realized by any combination of one information processing device and a program.

In addition, some or all of the components of the ADS-B notification acquisition device of the present embodiment and the modifications described later are realized by other general-purpose or dedicated circuits (cyclery), processors, and combinations thereof. These may be composed of a single chip or may be composed of a plurality of chips connected via a bus. A part or all of each component of each device may be realized by the combination of the circuit or the like and the program described above.

When a part or all of each component of the ADS-B notification acquisition device of the present embodiment and the modification described later is realized by a plurality of information processing devices, circuits, etc., the plurality of information processing devices, circuits, etc. , It may be centrally arranged or distributed. For example, the information processing device, the circuit, and the like may be realized as a form in which each is connected via a communication network, such as a client-and-server system and a cloud computing system.

Next, the operation of this embodiment will be described. FIG. 3 is a flowchart showing the operation of the present embodiment. First, the transmission / reception station 12 receives the position notification 40 from the aircraft 30 by the sector antenna 11 that can transmit / receive to / from the aircraft 30 existing in the transmission / reception coverage area 11a (step S1).
Next, the distance measuring unit 13 measures the distance to the aircraft 30 by the sector antenna 11. For example, the ranging unit 13 transmits the question signal 41a of the SSR mode S method from the sector antenna 11 to the aircraft 30 via the transmission / reception station 12 (step S2), and the response signal 41b of the SSR mode S method is transmitted from the aircraft 30 to the aircraft 30. Reception is performed via the sector antenna 11 and the transmission / reception station 12 (step S3). The distance measuring unit 13 measures the distance from the time difference between the transmission time Ta at which the sector antenna 11 transmits the question signal 41a and the reception time Tb at which the sector antenna 11 receives the response signal 41b to the aircraft 30 (step S4).

Then, the position collation unit 15 collates the measured distance to the aircraft 30 with the position 110 included in the position report 40. In the present embodiment, the spherical surface calculation unit 14 calculates the spherical surface 100 on which the aircraft is assumed to exist based on the measured distance (step S5). The position collation unit 15 acquires the information of the position 110 included in the position report 40 from the transmission / reception station 12, and collates the spherical surface 100 calculated by the spherical surface calculation unit 14 with the position 110 (step S6).

The position collation unit 15 determines whether the position included in the position report matches the distance based on the time difference between the transmission time and the reception time, depending on whether the spherical surface 100 and the position 110 match (step S7). When the position included in the position report matches the distance based on the time difference between the transmission time and the reception time, that is, the error in which the gap between the position 110 included in the position report 40 and the spherical surface 100 based on the measured distance is set. If it is within the range, the position collation unit 15 determines that the position report is correct and transmits it to an air traffic control device (not shown) (step S8). Further, when the position included in the position report and the distance based on the time difference between the transmission time and the reception time do not match, that is, the gap between the position 110 included in the position report 40 and the spherical surface 100 based on the measured distance is set. If it is not within the error range, the position collation unit 15 determines that the position report is incorrect, rejects the data of the incorrect position report 40, and does not transmit the data to the air control device. Alternatively, information indicating that the position information is explicitly incorrect is added to the position information 40 and transmitted (step S9).

As described above, the ADS-B notification acquisition device 1 of the present embodiment has a sector antenna 11 capable of transmitting and receiving from the aircraft 30 to and from the aircraft 30 existing in the transmission / reception coverage area 11a in which the transmission / reception station 12 is limited. Upon receiving the position report 40, the ranging unit 13 measures the distance to the aircraft 30 by the sector antenna 11. Then, the ADS-B notification acquisition device 1 collates the position 110 included in the position notification 40 from the aircraft 30 with the spherical surface 100 based on the measured distance, and depending on whether or not they match, the position notification 40 Judge the correctness. In this way, the ADS-B notification acquisition device 1 can detect the correctness of the broadcast position notification 40 on the ground side. As a result, it is not necessary to refer to incorrect position information in air traffic control, and the safety of air traffic control operation is improved. Further, the ADS-B notification acquisition device 1 of the present embodiment uses a sector antenna 11 capable of transmitting and receiving to and from an aircraft 30 existing in a limited transmission / reception coverage area 11a, thereby causing radio wave interference and the like by distance measurement. Even if an influence is expected, it is possible to limit the range of influence on the transmission / reception station 12 and the distance measuring device 13. Further, by recording the erroneous information in the recording unit 16, it is possible to confirm the erroneous information after the fact, which may lead to the improvement of the quality of the air traffic control operation.

Although the invention of the present application has been described above with reference to the embodiments, the invention of the present application is not limited to the above-described embodiment. Various changes that can be understood by those skilled in the art can be made within the scope of the present invention in terms of the configuration and details of the present invention.

An example has been described in which the position collating unit 15 collates the position 110 included in the position report with the spherical surface 100 obtained based on the distance to the aircraft 30 measured by the distance measuring unit 13, but the present invention is not limited to this. For example, the position collation unit 15 calculates the distance from the position 110 included in the position report 40 and the position of the known transmission / reception station 12 as the distance based on the position 110 included in the position report, and is based on the position 110 included in the position report. The distance may be collated with the distance to the aircraft 30 measured by the distance measuring unit 13 to determine whether or not the error is within a preset error range.

FIG. 4 is a block diagram showing the configuration of the first modification of FIG. 1. As shown in FIG. 4, the ADS-B notification acquisition device 2 of this modification includes a distance calculation unit 17 that calculates a distance calculated from a position 110 included in the position notification 40 and a position of a known transmission / reception station 12. There is. The position collation unit 15 collates the distance calculated by the distance calculation unit 17 with the distance measured by the distance measurement unit 13. That is, the position collation unit 15 performs collation by determining whether the error between the distance calculated by the distance calculation unit 17 and the distance measured by the distance measurement unit 13 is within the set error range.

When the distance calculated by the distance calculation unit 17 and the distance measured by the distance measuring unit 13 match, that is, the distance calculated by the distance calculation unit 17 and the distance measured by the distance measuring unit 13 are used in the position matching unit 15. When the error of is within the set error range, the ADS-B notification acquisition device 2 determines that the position notification 40 is correct, and transmits the position notification 40 to an air traffic control device (not shown). Further, when the distance calculated by the distance calculation unit 17 and the distance measured by the distance measurement unit 13 do not match, that is, there is an error between the distance calculated by the distance calculation unit 17 and the distance measured by the distance measurement unit 13. If it is not within the set error range, the ADS-B report acquisition device 2 determines that the position report is incorrect and rejects the position report 40. Also in this modified example, the handling of the data of the position report 40 determined to be incorrect is the same as the example of FIG.

FIG. 5 is a flowchart showing the operation of FIG. The ADS-B notification acquisition device 2 of this modification performs the processes from step S1 to step S4 in the same manner as in FIG. Next, the position collation unit 15 collates the measured distance to the aircraft 30 with the position 110 included in the position report 40. In this modification, the distance calculation unit 17 matches the position included in the position report 40. The distance is calculated from the position of the known transmission / reception station 12 (step S10). Then, the position collation unit 15 collates the distance based on the position included in the position report 40 calculated by the distance calculation unit 17 with the distance based on the time difference between the transmission time and the reception time measured by the distance measurement unit 13 (step S11). ..

Then, in step S7, the position collation unit 15 determines whether the position included in the position report 40 and the distance based on the time difference between the transmission time and the reception time match, and if they match, the same as in step S8 of FIG. , The position report 40 is determined to be correct, and is transmitted to an air traffic control device (not shown). Further, when the position included in the position report 40 in step S7 and the distance based on the time difference between the transmission time and the reception time do not match, the position report unit 15 makes an erroneous position report 40 as in step S9 of FIG. It is determined that the data is correct, and the data of the incorrect position report 40 is rejected. Also in this modified example, the handling of the data of the position report 40 determined to be incorrect is the same as the example of FIG.

According to the configuration of this modification, the ADS-B notification acquisition device 2 of the present embodiment receives the position notification 40 from the aircraft 30 by the sector antenna 11, and the ranging unit 13 measures the distance to the aircraft 30 by the sector antenna 11. do. Then, the ADS-B notification acquisition device 2 collates the distance based on the position 110 included in the position notification 40 with the distance based on the time difference between the transmission time and the reception time measured by the distance measuring unit 13, and these match. The correctness of the position report 40 is determined depending on whether or not the position report 40 is performed. In this way, the ADS-B notification acquisition device 2 of this modified example can detect the correctness of the broadcast position notification 40 on the ground side, and also in this modified example, radio wave interference and the like can be detected by distance measurement. It is possible to limit the range of influence on the transmission / reception station 12 and the distance measuring device 13 even when the influence of the above is expected.

Further, for example, the ADS-B notification acquisition device is a position included in the spherical surface 100 and the position notification 40 obtained based on the distance to the aircraft measured by using the question / answer method of the SSR mode S method. If the information does not match the information of 110, a recording unit 16 for recording the position notification 40 may be provided.

FIG. 6 is a block diagram showing the configuration of the second modification. As shown in FIG. 6, the ADS-B notification acquisition device 3 of the second modification includes a recording unit 16 that stores data of the position notification 40 that is determined to be incorrect and is not transmitted to the air traffic control device. It differs from the configuration shown in FIG. 1 in that it is present.

FIG. 7 is a flowchart showing the operation of FIG. In this modification, after performing the same processing as in steps S1 to S7 shown in FIG. 3, the distance between the position 110 included in the position notification 40 and the time difference between the transmission time and the reception time is the same as in step S8 shown in FIG. If the above matches, the position collation unit 15 determines that the position report is correct, and transmits the position report to an air traffic control device (not shown) (step S8). On the other hand, if the position 110 included in the position notification 40 does not match the distance based on the time difference between the transmission time and the reception time, and the position matching unit 15 determines that the position notification 40 is incorrect, in this modification, , The data of the erroneous position report 40 is saved in the recording unit 16 (step S12). Also in this modified example, the handling of the data of the position report 40 determined to be incorrect is the same as the example of FIG.

Further, the configuration may be a combination of the first modification example and the second modification example of FIG. That is, a recording unit 16 that stores data of the position notification 40 that is determined to be incorrect and is not transmitted to the air traffic control device is added to the configuration of the ADS-B notification acquisition device 2 of the first modification. After the same processing as in steps S1 to S4, S10, S11, and S7 shown in FIG. 5 is performed, if the position 110 included in the position notification 40 and the distance based on the time difference between the transmission time and the reception time match, the position Similar to step S8 shown in FIG. 5, the collation unit 15 determines that the position report is correct, and transmits the position report to an air traffic control device (not shown). On the other hand, when the position 110 included in the position report 40 and the distance based on the time difference between the transmission time and the reception time do not match, the position collation unit 15 determines that the position report 40 is incorrect, and the position report 40 is incorrect. Data is stored in the recording unit 16. Also in this modified example, the handling of the data of the position report 40 determined to be incorrect is the same as the example of FIG.

With such a configuration, the same effect as that of the first embodiment described above can be obtained, and the erroneous position notification 40 stored in the recording unit 16 can be confirmed after the fact, and the quality of air traffic control operation can be obtained. It leads to improvement.

1, 2 ADS-B notification acquisition device 11 Sector antenna 12 Transmission / reception station 13 Distance measurement unit 14 Spherical calculation unit 15 Position matching unit 16 Recording unit 17 Distance calculation unit 30 Aircraft 40 Position notification 41a Question signal 41b Response signal 50 Information processing device 51 CPU
52 ROM
53 RAM
54 Program 55 Storage device 56 Recording medium 57 Drive device 58 Communication interface 59 Communication network 60 Input / output interface 61 Bus 100 Spherical 110 Position

Claims (7)

With a sector antenna,
The receiving station that receives the position report from the aircraft by the sector antenna, and
A distance measuring unit that measures the distance to the aircraft with the sector antenna,
A position collation unit that collates the distance with the position included in the position report, and
Have,
An ADS-B notification acquisition device that enables transmission / reception with an aircraft existing in a limited transmission / reception coverage area by selecting and using one element of the sector antenna . The ADS-B according to claim 1, wherein the position collating unit determines whether the position included in the position report and the distance measured by the range measuring unit match, and if they do not match, the position report is rejected. Report acquisition device. The ADS-B notification acquisition device according to claim 1 or 2, further comprising a recording unit for recording the position notification when the position included in the position notification and the distance measured by the distance measuring unit do not match. It further has a sphere calculation unit that calculates a sphere based on the distance.
The ADS-B report acquisition device according to any one of claims 1 to 3, wherein the position collation unit collates the position included in the position report with the spherical surface. It further has a distance calculation unit that calculates the distance calculated from the position included in the position report and the position of the receiving station.
The ADS-B notification acquisition device according to any one of claims 1 to 3, wherein the position collation unit collates the distance measured by the distance measuring unit with the distance calculated by the distance calculating unit. Receive a position report from the aircraft by the sector antenna,
The distance to the aircraft is measured by the sector antenna,
Collate the distance with the position included in the position report.
ADS-B report acquisition method ,
ADS-B notification acquisition method that enables transmission / reception with an aircraft existing in a limited transmission / reception coverage area by selecting and using one element of the sector antenna . The process of receiving a position report from an aircraft using a sector antenna,
The process of measuring the distance to the aircraft with the sector antenna and
The process of collating the distance with the position included in the position report is performed.
A program that lets a computer run
A program that enables transmission / reception with an aircraft existing in a limited transmission / reception coverage area by performing a process of selecting and using one element of the sector antenna .

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