JP2008256406A - Radar performance monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accumulate and record data about a decoded reception signal in a recording medium, and to exhibit data used for specifying the causes, when there is abnormality. <P>SOLUTION: This radar performance monitor system is provided with a reception means 121 for receiving a signal transmitted from an ATC transponder 31 mounted on a secondary monitoring radar 2 or an aircraft 3, decoding means 122, 13 for decoding the received signal, and a recording processing means 152 for making a signal-decoded result recorded in the recording medium 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a radar performance monitor device that receives signals transmitted from a secondary monitoring radar and an ATC transponder and monitors the operation of the secondary monitoring radar.

  For air traffic control, standardized secondary surveillance radar (SSR) is used (for example, Non-Patent Document 1).

  In the system using the SSR, air traffic control is performed using a question signal and a response signal transmitted and received between the SSR 2 and the ATC transponder 31 mounted on the aircraft 3 as shown in FIG.

  In such a system, certainty of signal transmission / reception is required in order to secure a safe air route. Conventionally, there has been a method of using a signal received by a radar performance monitor device (RPM: Radar Performance Monitor) 1 in order to inspect the operation (signal transmission / reception) in the SSR 2.

  An example of a conventional RPM 1a is shown in FIG. In the RPM 1a, when the receiver 103 receives a signal via the antenna 101 and the attenuator 102, if the received signal is a question signal, the receiver 103 outputs the question signal to the question decoder 104. The query decoder 104 outputs the result of decoding the query signal to the response generator 105. The response generator 105 generates a response signal when the response signal needs to be transmitted in response to the interrogation signal, and outputs the response signal to the transmitter. The transmitter 106 to which the response signal is input transmits the response signal via the attenuator 102 and the antenna 101.

  In addition, when receiving a signal from the target SSR 2, the receiver 103 outputs a reception notification notifying that the signal has been received from the SSR 2 to the monitoring device 4 via the communication I / F 107. On the other hand, when the SSR 2 transmits / receives a signal, the SSR 2 outputs transmission / reception contents regarding the transmitted / received signal to the monitoring device 4. In the conventional system using the RPM 1a, as shown in FIG. 3, the monitoring device 4 receives the transmission / reception content output from the SSR 2 and the reception notification output from the RPM 1a, and inputs the transmission / reception content and the reception notification. In comparison, abnormalities in signal transmission / reception in SSR2 were monitored.

Other methods for monitoring the signal transmission / reception state in the SSR include a technique for confirming reception of a signal using a pseudo signal (for example, see Patent Document 1), and a technique for analyzing a signal in the SSR (for example, a patent). Reference 2).
JP 2003-240847 A JP 2007-10582 A ICAO, `` Aeronautical Telecommunications Annex 10 Volume IV Surveillance Rader and Collision Avoidance System '', July 1998

  In the SSR2 monitoring system using the conventional RPM 1a as described above with reference to FIGS. 3 and 4, only the notification signal output from the RPM 1a when a signal is received from the SSR 2 is used. Therefore, when the RPM 1a receives a signal from other than the target SSR 2, the notification signal is not output.

  Thus, in the monitoring system using the conventional RPM 1a, the monitoring device 4 is not used except for using the operation of the SSR 2 for monitoring. Therefore, the RPM 1a also receives signals transmitted from the SSRs of other stations and signals transmitted from the ATC transponders mounted on the aircraft. However, the SSR interference of other stations, the interrogation signals from the ATC transponders of the airborne aircraft Even if a transmission / reception abnormality occurs due to interference due to, there is a problem that it is difficult to specify the cause. Further, even the techniques described in Patent Documents 1 and 2 have a problem that the cause of transmission / reception abnormality cannot be specified.

  Therefore, in view of the above problems, the present invention provides a radar performance monitor device capable of accumulating and recording data relating to a decoded received signal and presenting data used for specifying the cause when an abnormality occurs.

  A radar performance monitor device according to a feature of the present invention is a radar performance monitor device that receives a signal transmitted from a secondary monitoring radar and monitors the operation of the signal of the secondary monitoring radar, and is a secondary monitoring radar or an aircraft. Receiving means for receiving a signal transmitted from the ATC transponder mounted on the computer, decoding means for decoding the received signal, and recording processing means for recording the result of decoding the signal on a recording medium.

  The radar performance monitor device may include display processing means for displaying a result of signal decoding.

  The decoding means of the radar performance monitor apparatus decodes the signal content, pulse width and pulse interval.

  The recording processing means of the radar performance monitor device can record the time information when the signal is received together with the result of decoding.

  ADVANTAGE OF THE INVENTION According to this invention, the radar performance monitor apparatus which accumulate | stores and records the data regarding the decoded received signal, and presents the data utilized for identification of a cause at the time of occurrence of abnormality can be provided.

  A radar performance monitoring device (RPM) 1 according to the best embodiment of the present invention is a device that monitors the state of signals transmitted and received by a secondary monitoring radar (SSR), and is the same as the conventional system shown in FIG. Similarly, it is used with secondary monitoring radar (SSR) 2, aircraft 3 that can communicate with SSR 2, SSR 2, and monitoring device 4 that monitors aircraft 3.

  RPM1 can receive the interrogation signal transmitted from SSR2, and can transmit a response signal to the received interrogation signal. Further, the RPM 1 receives a response signal transmitted from the transponder 31 mounted on the aircraft 3.

  When the RPM 1 receives a signal, the RPM 1 outputs a reception notification notifying that the signal has been received to the monitoring device 4. Further, when the SSR 2 transmits / receives a signal, the SSR 2 outputs transmission / reception contents for notifying the contents of the transmitted / received signals to the monitoring device 4. In the monitoring facility, air traffic control is performed based on the transmission / reception contents input by the monitoring device 4, and the communication state of the SSR 2 and the communication state in the monitoring airspace are monitored based on the transmission / reception contents and the reception notification.

  In addition to the transmission of the reception notification, the RPM 1 decodes the received signal and accumulates and records the decoding result in the recording medium. By reading and using the decryption result stored in RPM1 when necessary (for example, when the communication state of SSR2 is determined to be abnormal), the cause of the communication failure in the monitored airspace can be specified. . The RPM 1 receives and decodes the signal and stores the decoded signal. As shown in FIG. 1, the RPM 1 includes an antenna 11, a signal processor 12, a response decoder 13, a time generator 14, a processor 15, and a communication interface. (Communication I / F) 16, a display device 17 and a recording medium 18 are provided.

  The signal processor 12 includes a receiver 121, an interrogator 122, a response generator 123, and a transmitter 124. The configuration of the signal processor 12 is the same as that of the ATC transponder used in the conventional RPM described above with reference to FIG.

  The receiver 121 receives a signal transmitted from the SSR 2 and the transponder 21 via the antenna 11. The receiver 121 that has received the signal outputs a question signal to the question decoder 122 and outputs a response signal to the response decoder 13.

  The question decoder 122 outputs the result of decoding the input question signal to the response generator 123 and also outputs it to the processor 15. For example, the question decoder 122 identifies the SSR that transmitted the question signal from the question signal, and also decodes the pulse width, the pulse interval, the type of question, the content of the question, and the like.

  The response generator 123 generates a response signal for the question signal from the result of decoding the input question signal, and outputs the generated response signal to the transmitter 124 and also to the processor 15.

  The response decoder 13 outputs the result of decoding the input response signal to the processor 15. For example, the response decoder 13 identifies the SSR that has transmitted the response signal from the response signal, and also decodes the pulse width, the pulse interval, the type of question, the content of the question, and the like.

  The time generator 14 counts the current date and time and outputs it to the processor 15.

  The processor 15 generates, records, and outputs the recording data of the reception result of the inquiry signal and the response signal for grasping the transmission / reception state of the signal in the specific area. A processing unit 153 and a communication processing unit 154 are included.

  When the decryption result is input from the query decoder 122 or the response decryptor 13, the generation unit 151 generates record data by associating the decryption result with the current date and time input from the time generator 14. At this time, if the recording data has already been recorded on the recording medium 16, new recording data is generated by adding the date and time related to the received signal and the decoding result to the recording data recorded on the recording medium 16. The recording processing unit 152 records the recording data generated by the generating unit 151 on the recording medium 16.

  An example of recording data generated by the generation unit 151 and recorded on the recording medium 16 by the recording processing unit 152 is shown in FIG. In the recorded data shown in FIG. 2, the date and time (date and time), the type of whether the signal is an interrogation signal or a response signal, the pulse width of the signal, the pulse interval of the signal, the type of signal and the decoding result and decoding of the signal The previous data contents are listed.

  The display processing unit 153 displays the recording data on the display device 17. For example, the display processing unit 153 may display new recording data on the display device 17 each time new recording data is generated by the generating unit 151, and always display the latest recording data. Further, for example, the display processing unit 153 may read and display the recording data from the recording medium 16 in accordance with a display request input from the operation unit 19.

  When the decryption result is input from the question decryption unit 122 or the response decryption unit 13, the communication processing unit 154 transmits a reception notification for notifying that the signal is received to the monitoring device 4 via the communication I / F 18. Note that the communication processing unit 154 may transmit recording data recorded on the recording medium 16 as necessary.

  According to the radar performance monitor device 1 according to the above-described best embodiment of the present invention, the recording data relating to the received signal is generated from the result of decoding the received signal and recorded on the recording medium 16. By referring to the recording data recorded in the recording medium 16 when necessary, it is possible to identify the cause of the communication abnormality in the SSR2.

  Further, by operating the radar performance monitor device 1 of the present invention alone without being combined with a specific SSR, it can also be used for monitoring the radio wave environment used for air traffic control.

  As described above, the present invention has been described according to each embodiment. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  It goes without saying that the present invention includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the matters described in the above description and the invention specific matters according to the obvious claims.

It is a functional block diagram explaining the structure of the radar performance monitor apparatus which concerns on the best embodiment of this invention. It is an example of the recording data produced | generated with the radar performance monitor apparatus of FIG. It is an example of the system provided with the conventional radar performance monitor apparatus. It is a functional block diagram explaining the structure of the conventional radar performance monitor apparatus.

Explanation of symbols

1. Radar performance equipment (RPM)
DESCRIPTION OF SYMBOLS 10 ... Receiver 11 ... Antenna 12 ... Signal processor 121 ... Receiver (reception means)
122 ... Question decoder (decoding means)
123 ... Response generator 124 ... Transmitter 13 ... Response decoder (decoding means)
DESCRIPTION OF SYMBOLS 14 ... Time generator 15 ... Processor 151 ... Generation means 152 ... Recording processing means 153 ... Display processing means 154 ... Communication processing means 16 ... Recording medium 17 ... Display device 18 ... Recording medium 19 ... Operation means 151 ... Generation means 152 ... Recording processing means 153 ... Display processing means 154 ... Communication processing means 2 ... Secondary monitoring radar (SSR)
3 ... Aircraft 31 ... Transponder 4 ... Monitoring device

Claims (4)

A radar performance monitoring device that receives a signal transmitted from a secondary monitoring radar and monitors the operation of the signal of the secondary monitoring radar,
Receiving means for receiving a signal transmitted from a secondary monitoring radar or an ATC transponder mounted on an aircraft;
Decoding means for decoding the received signal;
A radar performance monitoring apparatus comprising: a recording processing unit that records a result of decoding the signal on a recording medium.   2. The radar performance monitor apparatus according to claim 1, further comprising display processing means for displaying a result of decoding the signal.   3. The radar performance monitor apparatus according to claim 1, wherein the decoding means decodes the content, pulse width and pulse interval of the signal.   4. The radar performance monitoring apparatus according to claim 1, wherein the recording processing unit records time information when the signal is received together with a result of the decoding.

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