JP2017215166A - Ads-b report acquisition device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ADS-B report acquisition device and method which are unaffected by interference of electric waves due to ranging, and which can detect broadcasting of an erroneous position report caused by measurement in an aircraft on the ground side.SOLUTION: An ADS-B report acquisition device 1 includes: a sector antenna 11 capable of performing transmission and reception with an aircraft 30 existing in limited transmittable/receivable coverage; a transmitting/receiving station 12 for receiving a position report 40 from the aircraft 30 by the sector antenna 11; a ranging part 13 for measuring a distance to the aircraft 30 by the sector antenna 11; and a position collation part 15 for collating a position included in the position report 40 with the distance.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ADS-B report acquisition apparatus and method.

  In the broadcast type automatic dependency monitoring (ADS-B), an on-board device mounted on an aircraft broadcasts aircraft information including a position based on a positioning result of the navigation device of the aircraft. By receiving the broadcast by the ground device, the position of the aircraft can be acquired.

  By receiving broadcasts from multiple aircrafts on the ground ADS-B report acquisition device, it is assumed that they will be used for air traffic control to grasp the positional relationship between aircrafts and to ensure safety intervals between aircrafts. Yes.

  The position report from the aircraft by ADS-B is sent spontaneously from the aircraft, and even if an incorrect position report is broadcast due to a failure of the on-board device of the aircraft, The device cannot detect it. For this reason, there is a problem that air traffic control is performed by an incorrect position report, and as a result, a safety interval between aircrafts 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 apparatus that inspects the reliability of an ADS-B signal transmitted from an aircraft. The ADS-B inspection apparatus 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 (Secondary Surveillance Radar: Secondary Monitoring Radar). get. The ADS-B inspection apparatus compares the position of the aircraft included in the ADS-B signal with the position of the aircraft included in the response signal, and inspects that the ADS-B signal is not reliable when they do not match. Output the result.

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

Japanese Patent Laid-Open No. 2008-130047 JP 2008-146450 A

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

  In the technique described in Patent Document 2, the ADS-B ground station transmits and receives the ADS-B signal, the mode S individual question signal, and the response signal to and from the aircraft through an omnidirectional antenna. Therefore, the influence of radio wave interference or the like is assumed by the distance measurement.

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

  An ADS-B report acquisition apparatus according to one aspect of the present invention includes a sector antenna capable of transmitting / receiving to / from an aircraft existing in a limited transmission / reception coverage, and a receiving station that receives a position report from an aircraft by the sector antenna. And a distance measuring device that measures the distance to the aircraft using the sector antenna, and a position matching unit that checks the distance and the position included in the position report.

  According to another aspect of the present invention, there is provided an ADS-B report acquisition method that receives a position report from an aircraft by a sector antenna that can be transmitted to and received from an aircraft existing in a limited transmission / reception coverage, and that uses the sector antenna to transmit an aircraft. The distance is measured, and the distance is compared with the position included in the position report.

  According to the present invention, it is possible to detect on the ground side that there has been no influence of radio wave interference or the like due to distance measurement, and that an incorrect position report has been broadcast due to measurement in the aircraft.

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. FIG. 5 is a flowchart showing the operation of FIG. FIG. 6 is a block diagram showing a configuration of the second modified example. FIG. 7 is a flowchart showing the operation of FIG. FIG. 8 is a diagram illustrating an example of a configuration of an information processing apparatus that implements the units illustrated in FIGS. 1, 4, and 6.

  Hereinafter, the ADS-B notification acquisition apparatus 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 report acquisition apparatus 1 includes a transmission / reception station 12 that receives a position report 40 broadcast from the aircraft 30 by the sector antenna 11. The sector antenna 11 is configured such that a plurality of element antennas having directivity in a certain angle range when viewed from the antenna are arranged 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 11 a.

  Moreover, the ADS-B report acquisition apparatus 1 measures the distance to an aircraft using the method using the question / response of the SSR mode S method, for example. That is, the ADS-B notification acquisition apparatus 1 transmits the SSR mode S method question signal 41 a and receives the SSR mode S method response signal 41 b from the aircraft 30 as shown in FIG. 2. Since the ADS-B and SSR mode S system signals have the same format, the transmission / reception station 12 can be shared.

  The ADS-B notification acquisition apparatus 1 includes the spherical surface 100 obtained based on the distance to the aircraft measured using the method using the question / response of the SSR mode S method and the position 110 included in the position report 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 apparatus 1 determines that the position report is correct, and transmits it to an air traffic control apparatus (not shown). If 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 apparatus 1 determines that the position report is incorrect and determines that it is incorrect. The received position report 40 is rejected. That is, the position verification 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 apparatus 1 according to the present embodiment can perform control so as not to be used for air traffic control when an incorrect position notification 40 is broadcast from the aircraft 30. As a result, there is no reference to incorrect position information in air traffic control, and the safety of air traffic control operation is improved. In addition, the ADS-B notification acquisition apparatus 1 of the present embodiment uses the sector antenna 11 with a narrow radio wave emission range, so that even if the influence of radio wave interference or the like is assumed by 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 the configuration of the first exemplary embodiment of the present invention. As shown in FIG. 1, the ADS-B notification acquisition apparatus 1 includes a sector antenna 11 that can transmit and receive to / from an aircraft 30 that exists in a limited transmission / reception coverage 11 a, and a position report from the aircraft 30 by the sector antenna 11. 40 is provided. Furthermore, the ADS-B notification acquisition apparatus 1 includes a distance measuring unit 13 that measures the distance to the aircraft 30 by the sector antenna 11 and a spherical surface 100 that is assumed to be present based on the distance measured by the distance measuring unit 13. A spherical calculation unit 14 for calculating is provided. A position collation unit 15 that collates the spherical surface calculated by the spherical surface calculation unit 14 with the position included in the position report 40 is provided.

  The distance measuring unit 13 measures the distance to the aircraft 30 when the position report 40 is received from the aircraft 30. The distance measuring unit 13 uses, for example, a method using a question / response of the SSR mode S method. That is, the distance measurement unit 13 transmits the SSR mode S transmission signal 41 a using the sector antenna 11 and the transmission / reception station 12 and receives the SSR mode S reception signal 41 b 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 to the aircraft 30 from the time difference between the transmission time Ta when the sector antenna 11 transmits the inquiry signal 41a and the reception time Tb when the sector antenna 11 receives the response signal 41b.

  The spherical surface calculation unit 14 calculates a spherical surface 100 whose center is the sector antenna 11 and whose radius is the distance measured by the distance measurement unit 13.

  The position verification unit 15 acquires information on the position 110 included in the position report 40 from the transmission / reception station 12. In addition, 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 collation unit 15 sets an error range that may be determined to match in advance. The position matching unit 15 considers a preset error range and performs matching including the error range. That is, the position matching unit 15 performs matching 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 110 included in the position report 40 matches the spherical surface 100 based on the measured distance, the position verification unit 15 determines that the position report is correct, and the aviation (not shown) Sent 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 matching unit 15 determines that the position report is correct, and is not illustrated. Sent 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 is not transmitted to the air traffic 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 not within the set error range, the position verification unit 15 determines that the position report is incorrect, and Reject report 40. That is, the position verification 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.

  In addition, each component of the ADS-B report acquisition apparatus shown in FIG. 1 and a modified example to be described later indicates a functional unit block. A part or all of each component of the ADS-B notification acquisition apparatus according to the present embodiment and a modified example described later may be realized by an arbitrary combination of the information processing apparatus 50 and the program as illustrated in FIG. 8, for example. . The information processing apparatus 50 includes the following configuration as an example.

CPU (Central Processing Unit) 51
・ ROM (Read Only Memory) 52
-RAM (Random Access Memory) 53
A program 54 loaded into the RAM 53
A storage device 55 for storing the program 54
A drive device 57 that reads and writes the recording medium 56
A communication interface 58 connected to the communication network 59
-Input / output interface 60 for data input / output
・ Bus 61 connecting each component
Each component of this embodiment and the ADS-B report acquisition apparatus of the modification mentioned later is implement | achieved when CPU51 acquires and executes the program 54 which implement | achieves these functions. For example, the program 54 that realizes the function of each component of each device is stored in advance in the storage device 55, the ROM 52, or the RAM 53, and is read by the CPU 51 as necessary.

  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 it to the CPU 51.

  There are various modifications in the implementation method of the ADS-B notification acquisition apparatus according to the present embodiment and the modifications described later. For example, each component of the ADS-B report acquisition device may be realized by any combination of a separate information processing device and a program for each component. In addition, a plurality of components included in each device may be realized by an arbitrary combination of one information processing device and a program.

  In addition, some or all of the components of the ADS-B notification acquisition apparatus according to the present embodiment and a modification described later are realized by other general-purpose or dedicated circuits, processors, and the like or combinations thereof. These may be configured by a single chip or may be configured by a plurality of chips connected via a bus. Part or all of each component of each device may be realized by a combination of the above-described circuit and the like and a program.

  When some or all of the constituent elements of the ADS-B notification acquisition apparatus according to the present embodiment and a modified example described later are realized by a plurality of information processing apparatuses and circuits, the plurality of information processing apparatuses and circuits are These may be centrally arranged or distributedly arranged. For example, the information processing apparatus, 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 report 40 from the aircraft 30 by the sector antenna 11 capable of transmitting / receiving to / from the aircraft 30 existing in the limited transmission / reception coverage 11a (step S1).
Next, the distance measuring unit 13 measures the distance to the aircraft 30 by the sector antenna 11. For example, the distance measuring unit 13 transmits an SSR mode S method interrogation signal 41 a from the sector antenna 11 to the aircraft 30 via the transceiver station 12 (step S 2), and the aircraft 30 transmits an SSR mode S method response signal 41 b. Reception is performed via the sector antenna 11 and the transmission / reception station 12 (step S3). The distance measuring unit 13 measures the distance to the aircraft 30 from the time difference between the transmission time Ta when the sector antenna 11 transmits the interrogation signal 41a and the reception time Tb when the sector antenna 11 receives the response signal 41b (step S4).

  The position verification unit 15 then compares the measured distance to the aircraft 30 with the position 110 included in the position report 40. In the present embodiment, a spherical surface 100 that is assumed to have an aircraft is calculated based on the distance measured by the spherical surface calculation unit 14 (step S5). The position collation unit 15 acquires information on 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 matching 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 distance 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 verification 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 does not match the distance based on the time difference between the transmission time and the reception time, 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 specified error range, the position verification unit 15 determines that the position report is incorrect, rejects the erroneous position report 40 data, and does not transmit it 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 (step S9).

  As described above, the ADS-B report acquisition device 1 according to the present embodiment is configured to transmit from the aircraft 30 by the sector antenna 11 that can transmit to and receive from the aircraft 30 existing in the transmission / reception coverage area 11a where the transmission / reception station 12 is limited. The position report 40 is received, and the distance measuring unit 13 measures the distance to the aircraft 30 by the sector antenna 11. Then, the ADS-B report acquisition device 1 collates the position 110 included in the position report 40 from the aircraft 30 with the spherical surface 100 based on the measured distance, and determines whether the position report 40 is in accordance with whether or not they match. Judge correctness. In this way, the ADS-B report acquisition device 1 can detect the correctness of the broadcasted position report 40 on the ground side. This eliminates reference to incorrect location information in air traffic control and improves the safety of air traffic control operations. In addition, the ADS-B notification acquisition apparatus 1 according to the present embodiment uses a sector antenna 11 that can transmit and receive to and from the aircraft 30 that exists in the limited transmission and reception coverage area 11a, so that radio wave interference and the like can be obtained by ranging. Even when an influence is assumed, it is possible to limit the influence range to the transmission / reception station 12 and the distance measuring device 13. In addition, by recording erroneous information in the recording unit 16, it is possible to check the erroneous information later, which may lead to an improvement in the quality of air traffic control operations.

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

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

  FIG. 4 is a block diagram showing the configuration of the first modification of FIG. As shown in FIG. 4, the ADS-B report acquisition apparatus 2 of the present modification includes a distance calculation unit 17 that calculates a distance calculated from the position 110 included in the position report 40 and the position of the known transmitting / receiving station 12. Yes. The position collation unit 15 collates the distance calculated by the distance calculation unit 17 and the distance measured by the distance measurement unit 13. That is, the position verification unit 15 performs verification by determining whether an 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 calculating unit 17 matches the distance measured by the distance measuring unit 13, that is, the distance calculated by the distance calculating unit 17 and the distance measured by the distance measuring unit 13. Is within the set error range, the ADS-B report acquisition apparatus 2 determines that the position report 40 is correct and transmits it to an air traffic control apparatus (not shown). Further, when the distance calculated by the distance calculating unit 17 and the distance measured by the distance measuring unit 13 do not match, that is, an error between the distance calculated by the distance calculating unit 17 and the distance measured by the distance measuring unit 13 is present. 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. In this modification as well, the handling of the data of the position report 40 determined to be incorrect is the same as in the example of FIG.

  FIG. 5 is a flowchart showing the operation of FIG. The ADS-B notification acquisition apparatus 2 of this modification performs the process from step S1 to step S4 similarly to FIG. Next, the position collation unit 15 collates the measured distance to the aircraft 30 and 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 transmitting / receiving 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 and 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 matching unit 15 determines whether the position included in the position report 40 matches the distance based on the time difference between the transmission time and the reception time, and if they match, as in step S8 in FIG. The position report 40 is determined to be correct and is transmitted to an air traffic control device (not shown). Further, if the position included in the position report 40 does not match the distance based on the time difference between the transmission time and the reception time in step S7, the position verification unit 15 determines that the position report 40 is erroneous as in step S9 in FIG. The data of the incorrect location report 40 is rejected. In this modification as well, the handling of the data of the position report 40 determined to be incorrect is the same as in the example of FIG.

  With the configuration of this modification, the ADS-B notification acquisition apparatus 2 of the present embodiment receives the position notification 40 from the aircraft 30 by the sector antenna 11, and the distance measuring unit 13 measures the distance to the aircraft 30 by the sector antenna 11. To do. And the ADS-B report acquisition apparatus 2 collates the distance based on the position 110 included in the position report 40 with the distance based on the time difference between the transmission time and the reception time measured by the distance measurement unit 13 and these match. Whether the position report 40 is correct or not is determined depending on whether or not to do so. In this way, the ADS-B report acquisition device 2 of the present modification can detect the correctness of the broadcast position report 40 on the ground side, and in this modification as well, radio wave interference and the like by ranging. Even in the case where the influence is assumed, it is possible to limit the range of influence on the transmission / reception station 12 and the distance measuring device 13.

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

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

  FIG. 7 is a flowchart showing the operation of FIG. In this modification, after performing the same processing as steps S1 to S7 shown in FIG. 3, the distance 110 based on the time difference between the position 110 included in the position report 40 and the transmission time and the reception time is the same as step S8 shown in FIG. If they match, the position verification unit 15 determines that the position report is correct and transmits it to an air traffic control device (not shown) (step S8). On the other hand, when the position 110 included in the position report 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 report 40 is incorrect, Then, the data of the incorrect position report 40 is stored in the recording unit 16 (step S12). In this modification as well, the handling of the data of the position report 40 determined to be incorrect is the same as in the example of FIG.

  Moreover, it is good also as a structure which combined the 1st modification of FIG. 4, and the 2nd modification. That is, the recording unit 16 that stores the data of the position report 40 that is determined to be incorrect and is not transmitted to the air traffic control apparatus is added to the configuration of the ADS-B report acquisition apparatus 2 of the first modification. After the same processing as steps S1 to S4, S10, S11, and S7 shown in FIG. 5 is performed, the position 110 included in the position report 40 matches the distance based on the time difference between the transmission time and the reception time. Similar to step S8 shown in FIG. 5, collator 15 determines that the position report is correct, and transmits it to an air traffic controller (not shown). On the other hand, when the position 110 included in the position report 40 does not match the distance based on the time difference between the transmission time and the reception time, the position matching unit 15 determines that the position report 40 is incorrect, and the incorrect position report 40 Are stored in the recording unit 16. In this modified example, the handling of the data of the position report 40 determined to be incorrect is the same as in the example of FIG.

  By adopting such a configuration, the same effects as those of the first embodiment described above can be obtained, and an incorrect location report 40 stored in the recording unit 16 can be confirmed afterwards, so that the quality of air traffic control operation can be improved. It leads to improvement.

DESCRIPTION OF SYMBOLS 1, 2 ADS-B report acquisition apparatus 11 Sector antenna 12 Transmission / reception station 13 Distance measurement part 14 Spherical calculation part 15 Position collation part 16 Recording part 17 Distance calculation part 30 Aircraft 40 Position report 41a Question signal 41b Response signal 50 Information processing apparatus 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 surface 110 position

Claims (7)

A sector antenna capable of transmitting and receiving to and from an aircraft in a limited transmission and reception coverage;
A receiving station for receiving a position report from an aircraft by the sector antenna;
A distance measuring unit for measuring the distance to the aircraft by the sector antenna;
A position matching unit that performs matching between the distance and the position included in the position report;
An ADS-B report acquisition device.   2. The ADS-B according to claim 1, wherein the position collating unit determines whether a position included in the position report matches a distance measured by the distance measuring unit, and rejects the position report when the position does not match. Report acquisition device.   The ADS-B report acquisition device according to claim 1 or 2, further comprising a recording unit that records the position report when the position included in the position report and the distance measured by the distance measurement unit do not match. A sphere calculator 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 verification unit collates a position included in the position report with the spherical surface. A distance calculation unit for calculating a distance calculated from the position included in the position report and the position of the receiving station;
The ADS-B report acquisition device according to any one of claims 1 to 3, wherein the position collating unit collates the distance measured by the distance measuring unit and the distance calculated by the distance calculating unit. Receive position reports from aircraft by sector antennas that can send and receive to and from aircraft in limited coverage areas,
Measure the distance to the aircraft with the sector antenna,
Collating the distance with the position included in the position report,
ADS-B report acquisition method. A process of receiving a position report from an aircraft by a sector antenna that can be transmitted to and received from an aircraft existing in a limited transmission and reception coverage area;
Processing to measure the distance to the aircraft with the sector antenna;
A process of collating the distance and the position included in the position report,
A program to be executed by a computer.

Images