Information processing device and information processing method

Abstract

To specify a position of a flying object when the flying body switches communication means between ground communication and satellite communication.SOLUTION: A flight management server 1 includes an acquisition part 121 for acquiring information representing a scheduled flight route of a flying object, a detection part 122 for detecting switching processing for switching communication executed by the flying object in flight between ground communication using ground communication facilities and satellite communication using a communication satellite, and a specification part 123 for specifying a position of the flying object during the switching processing based on the scheduled flight route after the switching processing is started.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an information processing device and an information processing method for processing information relating to an aircraft. [Background technology]

[0002] Patent Document 1 discloses a communication terminal capable of switching between terrestrial communication via a terrestrial base station and satellite communication via a communication satellite. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-168898 A Summary of the Invention [Problem to be solved by the invention]

[0004] The aircraft flies while sending and receiving information to and from a server via communication. However, it may take several to several tens of seconds for the aircraft to switch the communication means between ground communication and satellite communication, during which time the aircraft cannot communicate. When the aircraft cannot communicate, there is a problem that the aircraft cannot transmit its location information to the outside via communication.

[0005] The present invention has been made in consideration of these points, and aims to make it possible to determine the position of an aircraft when the aircraft switches its communication means between terrestrial communication and satellite communication. [Means for solving the problem]

[0006] An information processing device of a first aspect of the present invention has an acquisition unit that acquires information indicating a planned flight path of an aircraft, a detection unit that detects that a switching process is being performed to switch communications performed by the aircraft during flight between terrestrial communications using ground communication facilities and satellite communications using a communication satellite, and an identification unit that identifies the position of the aircraft while the switching process is being performed based on the planned flight path after the switching process has been started and the position of the aircraft before the switching process has been started or after the switching process has been completed.

[0007] The identification unit may identify the position of the aircraft during the switching process while the aircraft is unable to perform the ground communication and the satellite communication, based on the planned flight route after the switching process is initiated.

[0008] The identification unit may identify a position on the planned flight route after the switching process has been started as the position of the aircraft while the switching process is being performed.

[0009] The acquisition unit may acquire pre-switching position information indicating the position of the aircraft before the switching process is started from the aircraft via a communication means before the switching process is started.

[0010] The information processing device may further have a display control unit that displays on an information terminal associated with the flying object an image corresponding to the position of the flying object indicated by the pre-switching position information and an image corresponding to the position of the flying object while the switching process is being performed on a map in different display modes.

[0011] The acquisition unit may acquire post-switching position information indicating the position of the aircraft after the switching process is completed from the aircraft via the communication means after the switching process is completed.

[0012] The information processing device may further have a display control unit that displays on an information terminal associated with the flying object an image corresponding to the position of the flying object while the switching process is being performed and an image corresponding to the position of the flying object indicated by the post-switching position information in different display modes on a map.

[0013] The identification unit may identify the position of the aircraft while the switching process is being performed based on the planned flight path after the switching process is started, the position of the aircraft before the switching process is started, and the position of the aircraft after the switching process is completed.

[0014] The acquisition unit acquires weather information indicating the weather in an area including the aircraft, and the identification unit may identify the position of the aircraft while the switching process is being performed based on the weather information while the switching process is being performed, in addition to the planned flight path after the switching process has been initiated.

[0015] The detection unit may detect that the switching process has started on condition that the flying object outputs information indicating that the switching process has started.

[0016] The detection unit may detect that the switching process has started on condition that a relationship between the radio wave intensity of the ground communication signal and a threshold value satisfies a switching criterion.

[0017]

[0018]

[0019] An information processing method of a second aspect of the present invention includes the steps of: acquiring information indicating a planned flight path of an aircraft, executed by a processor; detecting that a switching process is being performed to switch communications performed by the aircraft during flight between terrestrial communications using ground communication facilities and satellite communications using a communication satellite; and identifying the position of the aircraft while the switching process is being performed based on the planned flight path after the switching process has been started and the position of the aircraft before the switching process has been started or after the switching process has been completed. Effect of the Invention

[0020] According to the present invention, it is possible to determine the position of an aircraft when the aircraft switches communication means between terrestrial communication and satellite communication. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a schematic diagram of a flight management system according to an embodiment. [Diagram 2] FIG. 1 is a block diagram of a flight management system according to an embodiment. [Diagram 3] 11 is a schematic diagram for explaining a method in which a detection unit detects that a switching process is being performed. FIG. [Figure 4] 11 is a schematic diagram for explaining a method in which an identification unit identifies the position of an aircraft. FIG. [Diagram 5] 11 is a schematic diagram for explaining a method in which a display control unit displays the position of an aircraft on an information terminal. FIG. [Figure 6] A figure showing a flowchart of an information processing method performed by a flight management server according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] [Outline of Flight Management System S] 1 is a schematic diagram of a flight management system S according to this embodiment. The flight management system S includes a flight management server 1, an aircraft 2, and an information terminal 3. The flight management system S may also include other terminals, devices, etc.

[0023] The flight management server 1 is a computer that manages information related to the flight of the aircraft 2. The flight management server 1 is a single computer or multiple computers. The flight management server 1 may also be one or multiple virtual servers that operate on a cloud, which is a collection of computer resources.

[0024] The aircraft 2 is an unmanned flying device such as a drone that flies in the air. The aircraft 2 may also be a manned flying device such as an airplane or a flyable vehicle. The aircraft 2 flies along a predetermined planned flight route. The aircraft 2 has a communication unit for transmitting and receiving information by wireless communication with the flight management server 1 via a predetermined communication means.

[0025] The aircraft 2 can switch the communication means used during flight between ground communication using ground communication equipment 4 and satellite communication using communication satellite 5. The communication equipment 4 is, for example, a base station installed on the ground that relays communication signals transmitted by the flight management server 1 and the aircraft 2. The communication equipment 4 supports communication standards such as 3G (Generation), 4G / LTE (Long Term Evolution), and 5G. The communication satellite 5 is, for example, an artificial satellite placed in outer space that relays communication signals transmitted by the flight management server 1 and the aircraft 2. The communication satellite 5 supports a predetermined satellite communication standard.

[0026] The information terminal 3 is a computer used by a user. The information terminal 3 is, for example, an information terminal such as a smartphone, a tablet terminal, or a personal computer. The user is, for example, a pilot who pilots the aircraft 2. The user may also be a manager (operator, etc.) who manages the flights of multiple aircraft 2. The information terminal 3 has a display unit such as a liquid crystal display for displaying information, and an operation unit such as a touch panel for accepting operations by the user. The information terminal 3 transmits and receives information to and from the flight management server 1 via communication.

[0027] An outline of the process executed by the flight management system S according to this embodiment will be described below. The flight management server 1 acquires position information indicating the position of an aircraft 2 in flight ((1) in FIG. 1).

[0028] The flight management server 1 detects that a switching process is being performed to switch the communications of the aircraft 2 in flight between ground communications and satellite communications ((2) in FIG. 1). The flight management server 1 detects that the switching process is being performed, for example, when the aircraft 2 outputs information indicating that the switching process has started, or when the radio wave strength of the communication signal received by the aircraft 2 satisfies a predetermined switching criterion.

[0029] The flight management server 1 identifies the position of the aircraft 2 while the switching process is being performed based on the planned flight route after the switching process is started ((3) in FIG. 1). The flight management server 1 identifies, for example, any position on the planned flight route after the switching process is started as the position of the aircraft 2 while the switching process is being performed.

[0030] The flight management server 1 transmits display information for displaying the identified position of the aircraft 2 to the information terminal 3 associated with the aircraft 2 ((4) in FIG. 1). The information terminal 3 displays an image corresponding to the position of the aircraft 2 on a map in accordance with the display information received from the flight management server 1.

[0031] In this way, when the communication means of the aircraft 2 is switched between terrestrial communication and satellite communication, the flight management system S determines the position of the aircraft 2 based on the planned flight route during the switching process. This allows the flight management system S to determine the position of the aircraft 2 even if the aircraft 2 is unable to communicate when the aircraft 2 switches its communication means between terrestrial communication and satellite communication.

[0032] [Configuration of Flight Management System S] FIG. 2 is a block diagram of the flight management system S according to this embodiment. In FIG. 2, the arrows indicate main data flows, and there may be data flows other than those shown in FIG. 2. In FIG. 2, each block indicates a configuration in functional units, not a configuration in hardware (device) units. Therefore, the blocks shown in FIG. 2 may be implemented in a single device, or may be implemented separately in multiple devices. Data may be exchanged between blocks via any means, such as a data bus, a network, or a portable storage medium.

[0033] The flight management server 1 has a memory unit 11 and a control unit 12. The memory unit 11 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, etc. The memory unit 11 pre-stores programs to be executed by the control unit 12. The memory unit 11 may be provided outside the flight management server 1, in which case data may be exchanged between the memory unit 11 and the control unit 12 via a network.

[0034] The control unit 12 has an acquisition unit 121, a detection unit 122, an identification unit 123, a display control unit 124, and a switching control unit 125. The control unit 12 is a processor such as a CPU (Central Processing Unit), and functions as the acquisition unit 121, the detection unit 122, the identification unit 123, the display control unit 124, and the switching control unit 125 by executing a program stored in the storage unit 11. At least a part of the functions of the control unit 12 may be executed by an electric circuit. Also, at least a part of the functions of the control unit 12 may be realized by the control unit 12 executing a program executed via a network.

[0035] The process executed by the flight management system S will be described in detail below. An aircraft 2 in flight identifies its own position using, for example, a Global Navigation Satellite System (GNSS), and repeatedly transmits position information indicating the identified position to the flight management server 1 by ground communication or satellite communication. In addition, the aircraft 2 repeatedly transmits communication information indicating whether the communication means used is ground communication or satellite communication, and the radio wave strength of the communication signal being received, to the flight management server 1 by ground communication or satellite communication.

[0036] In the flight management server 1, the acquisition unit 121 acquires the location information and communication information transmitted by the aircraft 2, and stores the information in the memory unit 11 in association with an aircraft ID (Identification) for identifying the aircraft 2 that sent the information.

[0037] The acquisition unit 121 acquires, for example, pre-switching position information indicating the position of the aircraft 2 before the switching process is started from the aircraft 2 via terrestrial communication or satellite communication, which is the communication means before the switching process is started. The acquisition unit 121 acquires post-switching position information indicating the position of the aircraft 2 after the switching process is completed from the aircraft 2 via terrestrial communication or satellite communication, which is the communication means after the switching process is completed. The acquisition unit 121 may acquire the position information directly from the aircraft 2, or may acquire the position information via another device. While the switching process is being performed, the acquisition unit 121 does not need to acquire the position information and communication information.

[0038] The acquisition unit 121 also acquires flight schedule information indicating a planned flight route (such as a planned flight position at each time) along which the aircraft 2 is scheduled to fly. The acquisition unit 121 acquires, for example, flight schedule information pre-stored in the storage unit 11, or acquires flight schedule information from another device that holds the flight schedule information of the aircraft 2.

[0039] The acquisition unit 121 also acquires weather information indicating the weather in the area including the aircraft 2. The weather information is information indicating the actually measured weather or information indicating the predicted weather (weather forecast, etc.). The weather information includes, for example, the wind direction and wind speed at each position in the sky. The acquisition unit 121 acquires, for example, weather information stored in advance in the memory unit 11, or acquires weather information from another device that provides weather information.

[0040] The acquisition unit 121 also acquires the flight speed of the aircraft 2. The flight speed is the speed at which the aircraft 2 actually flew (such as the average speed for a predetermined period of time) or the speed specified for the aircraft 2. The acquisition unit 121 acquires, for example, a flight speed that is pre-stored in the memory unit 11, or acquires the flight speed from the aircraft 2.

[0041] The acquisition unit 121 also acquires a radio wave map stored in advance in the storage unit 11. The radio wave map is, for example, information indicating radio wave strength of each of terrestrial communication and satellite communication signals at each position in the sky. The radio wave map may be a three-dimensional radio wave map indicating radio wave strength for each altitude at each position in the sky. The radio wave map is generated, for example, by simulating the radio wave strength of communication signals at each position in the sky, or by actually measuring the radio wave strength of communication signals at each position in the sky.

[0042] The detection unit 122 detects that a switching process is being performed to switch the communication performed by the flying object 2 between ground communication and satellite communication. Fig. 3 is a schematic diagram for explaining a method by which the detection unit 122 detects that a switching process is being performed.

[0043] The detection unit 122 detects that the switching process has started. The detection unit 122 detects that the switching process has started, for example, on the condition that the aircraft 2 outputs start information indicating that the switching process has started. In this case, the aircraft 2 transmits the start information to the flight management server 1 via ground communication or satellite communication, which is the communication means before the switching process was started, for example, immediately before starting the switching process. The detection unit 122 detects that the switching process has started, on the condition that the start information has been received from the aircraft 2.

[0044] Furthermore, the detection unit 122 may detect that the switching process has started, for example, on the condition that the relationship between the radio wave strength of the ground communication signal and a predetermined threshold value satisfies a switching criterion. The radio wave strength of the ground communication signal is the radio wave strength at the position of the aircraft 2 indicated by the radio wave map acquired by the acquisition unit 121, or the radio wave strength of the communication signal received by the aircraft 2 indicated by the communication information acquired by the acquisition unit 121. When the radio wave map is a three-dimensional radio wave map, the detection unit 122 may use the radio wave strength on the radio wave map corresponding to the position and altitude of the aircraft 2 in flight.

[0045] When the aircraft 2 is performing satellite communication, the detection unit 122 detects that the switching process has started, for example, on condition that the radio wave strength of the signal of the ground communication is equal to or greater than a threshold. When the aircraft 2 is performing ground communication, the detection unit 122 detects that the switching process has started, for example, on condition that the radio wave strength of the signal of the ground communication is equal to or less than a threshold. The detection unit 122 may detect that the switching process has started based on other switching criteria.

[0046] Once the switching process is started, the aircraft 2 cannot communicate until the switching process is completed. Then, the detection unit 122 detects that the switching process is completed. The detection unit 122 detects that the switching process is completed, for example, on the condition that the aircraft 2 outputs completion information indicating that the switching process is completed. In this case, the aircraft 2 transmits the completion information to the flight management server 1 via ground communication or satellite communication, which is the communication means after the switching process is completed, for example, immediately after completing the switching process. The detection unit 122 detects that the switching process is completed on the condition that the completion information is received from the aircraft 2.

[0047] The identification unit 123 identifies the position of the aircraft 2 based on the information acquired by the acquisition unit 121. Fig. 4 is a schematic diagram for explaining a method in which the identification unit 123 identifies the position of the aircraft 2.

[0048] The identification unit 123 identifies the position indicated by the pre-switching position information acquired by the acquisition unit 121 before the detection unit 122 detects that the switching process has been started as the position of the aircraft 2 before the switching process was started.

[0049] The identification unit 123 estimates an estimated position, which is the position of the aircraft 2 while the switching process is being performed and the aircraft 2 is unable to perform ground communication and satellite communication, based on a planned flight route of the aircraft 2 after the switching process is started, on the condition that the detection unit 122 detects that the switching process has been started. The identification unit 123 identifies the estimated position as the position of the aircraft 2.

[0050] The identification unit 123 estimates, as an estimated position, for example, any position on the planned flight route after the switching process is started, among the planned flight routes indicated by the flight plan information acquired by the acquisition unit 121. This allows the flight management system S to estimate the position of the aircraft 2 from the planned flight route even if the aircraft 2 is unable to communicate when the aircraft 2 switches the communication means between ground communication and satellite communication.

[0051] The identification unit 123 may estimate the estimated position based on at least one of the flight speed of the flying object 2 and the weather information while the switching process is being performed, in addition to the planned flight route after the switching process is started. For example, the identification unit 123 estimates, as the estimated position, the position of the flying object 2 when it flies on the planned flight route at the flight speed acquired by the acquisition unit 121 during the elapsed time from the time when the detection unit 122 detects that the switching process has been started to the current time. This allows the flight management system S to improve the accuracy of estimating the position of the flying object 2 by taking into account the flight speed of the flying object 2. The identification unit 123 may also use specifications other than the flight speed of the flying object 2 to estimate the estimated position.

[0052] The determination unit 123 may change the flight speed used to estimate the estimated position according to the wind direction and wind speed indicated by the weather information acquired by the acquisition unit 121 while the switching process is being performed. For example, the determination unit 123 decreases the flight speed by a value corresponding to the wind speed when there is a headwind against the direction in which the flying object 2 is moving, and increases the flight speed by a value corresponding to the wind speed when there is a tailwind. This allows the flight management system S to improve the accuracy of estimating the position of the flying object 2 by taking into account the weather in the area including the flying object 2.

[0053] The identification unit 123 may estimate the estimated position based on the position of the aircraft 2 before the switching process is started, which is indicated by the pre-switching position information, and the planned flight route after the switching process is started. For example, the identification unit 123 calculates a deviation vector indicating the deviation between the position of the aircraft 2 before the switching process is started and the planned flight route, and estimates the position obtained by adding the deviation vector to the position on the planned flight route after the switching process is started as the estimated position. This allows the flight management system S to improve the accuracy of estimating the position of the aircraft 2, taking into account the deviation between the position of the aircraft 2 before the switching process is started and the planned flight route.

[0054] The identification unit 123 may estimate the estimated position based on the position of the flying object 2 after the switching process indicated by the post-switching position information is completed and the planned flight route after the switching process is started. For example, the identification unit 123 calculates a deviation vector indicating the deviation between the position of the flying object 2 after the switching process is completed and the planned flight route, and estimates the position obtained by adding the deviation vector to the position on the planned flight route after the switching process is started as the estimated position. Thereby, when the flight management system S identifies the position of the flying object 2 during the switching process after the switching process is completed, for example, the accuracy of estimating the position of the flying object 2 can be improved by taking into account the deviation between the position of the flying object 2 after the switching process is completed and the planned flight route.

[0055] The identification unit 123 may estimate the estimated position using both the position of the aircraft 2 before the switching process is started, which is indicated by the pre-switching position information, and the position of the aircraft 2 after the switching process is completed, which is indicated by the post-switching position information. This allows the flight management system S to further improve the accuracy of estimating the position of the aircraft 2.

[0056] After the detection unit 122 detects that the switching process has been completed, the identification unit 123 identifies the position indicated by the post-switching position information acquired by the acquisition unit 121 as the position of the flying object after the switching process has been completed.

[0057] The display control unit 124 displays the position of the aircraft 2 identified by the identification unit 123 on a map in the information terminal 3 associated with the aircraft 2. The user of the information terminal 3 is, for example, a pilot who pilots the aircraft 2 or an administrator who manages the flight of the aircraft 2.

[0058] The display control unit 124 transmits display information for displaying the position of the aircraft 2 identified by the identification unit 123 to the information terminal 3 associated with the aircraft 2. The display information includes, for example, the position (coordinates, etc.) of the aircraft 2 identified by the identification unit 123, information indicating a display mode of the position of the aircraft 2, and a planned flight path of the aircraft 2. The position of the aircraft 2 included in the display information may be the latest position of the aircraft 2, or may be multiple positions identified during the flight of the aircraft 2.

[0059] 5 is a schematic diagram for explaining a method in which the display control unit 124 displays the position of the aircraft 2 on the information terminal 3. The information terminal 3 displays an image corresponding to the position of the aircraft 2 on a map according to the display information received from the flight management server 1. The information terminal 3 may display on the display unit a map that is pre-stored in the memory unit of the information terminal 3, or may display on the display unit a map received from the flight management server 1 or another device.

[0060] The display control unit 124, for example, causes the information terminal 3 to display a planned flight path 31, a position image 32 corresponding to the position of the aircraft 2, and a risk range 33 based on the position of the aircraft 2, superimposed on a map. The position image 32 is an image such as an icon displayed at a position on the map corresponding to the position of the aircraft 2. In the example of FIG. 5, the display control unit 124 causes a plurality of position images 32 corresponding to a plurality of positions identified during the flight of the aircraft 2 to be displayed on the map, but it may also cause only the position image 32 corresponding to the latest one position of the aircraft 2 to be displayed on the map.

[0061] The display control unit 124 may display on the map, in different display modes (color, pattern, size, etc.), a position image 32 corresponding to the position of the aircraft 2 before the switching process indicated by the pre-switching position information is started and a position image 32 corresponding to the position of the aircraft 2 while the switching process is being performed (i.e., the estimated position estimated by the identification unit 123) on the information terminal 3. The display control unit 124 may also display on the map, in different display modes (color, pattern, size, etc.), a position image 32 corresponding to the position of the aircraft 2 while the switching process is being performed (i.e., the estimated position estimated by the identification unit 123) and a position image 32 corresponding to the position of the aircraft 2 after the switching process indicated by the post-switching position information is completed. This allows the flight management system S to easily distinguish whether the displayed position of the aircraft 2 is an estimated position or not.

[0062] The risk range 33 is a range in which there is a possibility of approaching the aircraft 2. The risk range 33 is, for example, a circle of a predetermined radius centered on the position of the aircraft 2. The display control unit 124 makes the risk range 33 while the switching process is being performed in the information terminal 3 larger than the risk range 33 before or after the switching process is started. This allows the flight management system S to easily allow the user to understand, as a range on a map, that the actual position of the aircraft 2 is not displayed due to the switching process. The display control unit 124 may also change the size of the risk range 33 depending on the weather information or the specifications (size, etc.) of the aircraft 2.

[0063] The switching control unit 125 controls the switching of the communication performed by the flying aircraft 2 between ground communication and satellite communication in response to a predetermined condition being satisfied. The switching control unit 125 switches the communication performed by the flying aircraft 2 between ground communication and satellite communication, for example, by transmitting control information for switching the communication means between ground communication and satellite communication to the flying aircraft 2 via ground communication or satellite communication. The flying aircraft 2 switches the communication means between ground communication and satellite communication in accordance with the control information received from the flight management server 1.

[0064] The switching control unit 125 controls the switching of the communication performed by the aircraft 2 between terrestrial communication and satellite communication, on condition that the relationship between the radio wave strength of the terrestrial communication signal and a predetermined threshold satisfies a switching criterion. The radio wave strength of the terrestrial communication signal is the radio wave strength at the position of the aircraft 2 indicated by the radio wave map acquired by the acquisition unit 121, or the radio wave strength of the communication signal received by the aircraft 2 indicated by the communication information acquired by the acquisition unit 121. When the radio wave map is a three-dimensional radio wave map, the detection unit 122 may use the radio wave strength on the radio wave map corresponding to the position and altitude of the aircraft 2 in flight.

[0065] When the aircraft 2 is performing satellite communication, the switching control unit 125 controls to switch the communication performed by the aircraft 2 from satellite communication to terrestrial communication, for example, on condition that the radio wave strength of the signal of the terrestrial communication is equal to or greater than a threshold. When the aircraft 2 is performing terrestrial communication, the switching control unit 125 controls to switch the communication performed by the aircraft 2 from terrestrial communication to satellite communication, for example, on condition that the radio wave strength of the signal of the terrestrial communication is equal to or less than a threshold. The detection unit 122 may control to switch the communication performed by the aircraft 2 between terrestrial communication and satellite communication based on other switching criteria.

[0066] [Information processing method flow] 6 is a diagram showing a flowchart of an information processing method executed by the flight management server 1 according to this embodiment. In the flight management server 1, the acquisition unit 121 acquires the location information and communication information transmitted by the aircraft 2, associates it with an aircraft ID for identifying the aircraft 2 that sent it, and stores it in the memory unit 11 (S11). The acquisition unit 121 also acquires information such as flight schedule information, weather information, flight speed, radio wave map, etc., which are used to detect the switching process and display the position of the aircraft 2.

[0067] The detection unit 122 detects that a switching process is being performed to switch the communication performed by the flying aircraft 2 between ground communication and satellite communication (S12). The detection unit 122 detects that the switching process has been started, for example, in response to the aircraft 2 outputting start information or the relationship between the radio wave strength of the ground communication signal and a predetermined threshold value satisfying a switching criterion. The detection unit 122 also detects that the switching process has been completed, for example, in response to the aircraft 2 outputting completion information.

[0068] When the detection unit 122 detects that the switching process has started (YES in S13), the identification unit 123 estimates an estimated position, which is the position of the aircraft 2 while the switching process is being performed and the aircraft 2 is unable to perform ground communication and satellite communication, based on the planned flight route of the aircraft 2 after the switching process has started (S14). The identification unit 123 identifies the estimated position as the position of the aircraft 2.

[0069] If the detection unit 122 does not detect that the switching process has started or if the detection unit 122 detects that the switching process has been completed (NO in S13), the identification unit 123 identifies the actual position of the aircraft 2 (for example, the position indicated by the pre-switching position information or the post-switching position information acquired by the acquisition unit 121) as the position of the aircraft 2 (S15).

[0070] The display control unit 124 causes the information terminal 3 associated with the aircraft 2 to display the position of the aircraft 2 identified by the identification unit 123 on a map (S16).

[0071] If a predetermined termination condition (e.g., the user has performed a termination operation) is not satisfied (NO in S17), the flight management server 1 repeats steps S11 to S16. If a predetermined termination condition is satisfied (YES in S17), the flight management server 1 ends the process.

[0072] [Effects of the embodiment] If a period of time during which the aircraft 2 is unable to communicate occurs when switching the communication means between terrestrial communication and satellite communication, the aircraft 2 is unable to transmit current position information to the outside. When the communication means of the aircraft 2 is switched between terrestrial communication and satellite communication, the flight management system S according to this embodiment identifies the position of the aircraft 2 based on the planned flight path during the switching process. This allows the flight management system S to identify the position of the aircraft 2 even if the aircraft 2 is unable to communicate when switching the communication means between terrestrial communication and satellite communication.

[0073] [First Modification] In the above-described embodiment, the flight management server 1 functions as an information processing device that performs processing to identify the position of the aircraft 2, whereas in this modified example, one of the multiple aircraft 2 included in the flight management system S functions as an information processing device that performs processing to identify the position of the aircraft 2.

[0074] In this case, the processor of the aircraft 2 functions as, for example, an acquisition unit 121, a detection unit 122, an identification unit 123, a display control unit 124, and a switching control unit 125. According to the flight management system S of this modified example, even if there is no flight management server 1, any of the aircraft 2 can perform processing to identify the position of the aircraft 2.

[0075] [Second modified example] In the above-described embodiment, the flight management server 1 functions as an information processing device that performs processing to determine the position of the aircraft 2, whereas in this modified example, the flight management server 1 and the aircraft 2 jointly function as information processing devices that perform processing to determine the position of the aircraft 2.

[0076] In this case, for example, the processor of the aircraft 2 functions as an acquisition unit 121, a detection unit 122, and a switching control unit 125, and the processor of the flight management server 1 functions as an identification unit 123 and a display control unit 124. In the aircraft 2, the detection unit 122 detects that a switching process is being performed to switch the communication performed by the aircraft 2 between ground communication and satellite communication, and then, in the flight management server 1, based on the detection result in the aircraft 2, the identification unit 123 estimates an estimated position while the switching process is being performed based on the planned flight route of the aircraft 2, and the display control unit 124 displays the position of the aircraft 2 on a map in the information terminal 3. According to the flight management system S of this modified example, the processing load can be distributed to the flight management server 1 and the aircraft 2.

[0077] Furthermore, this invention will make it possible to contribute to Goal 9 of the United Nations' Sustainable Development Goals (SDGs), which is to "build resilient infrastructure, promote industry, innovation and infrastructure."

[0078] Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. For example, all or part of the device can be configured by distributing or integrating functionally or physically in any unit. In addition, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment resulting from the combination combines the effect of the original embodiment.

[0079] The processors of the flight management server 1 and the aircraft 2 execute each step (process) included in the information processing method shown in Fig. 6. The processors of the flight management server 1 and the aircraft 2 execute the information processing method shown in Fig. 6, for example, by executing a program for executing the information processing method shown in Fig. 6. Some of the steps included in the information processing method shown in Fig. 6 may be omitted, the order of the steps may be changed, and multiple steps may be performed in parallel. [Explanation of symbols]

[0080] S Flight Management System 1 Flight Management Server 11 Storage section 12 Control section 121 Acquisition Department 122 Detection unit 123 Specific part 124 Display control section 125 Switching control section 2. Flying Objects 3. Information terminal 4. Communications Equipment 5. Communications Satellites

Claims

1. An acquisition unit that acquires information indicating a planned flight path of the aircraft; A detection unit that detects that a switching process is being performed to switch communication performed by the flying object between ground communication using ground communication facilities and satellite communication using a communication satellite; A determination unit that determines the position of the aircraft during the switching process after the switching process is completed by using a difference between the planned flight path after the switching process is started and the position of the aircraft after the switching process is completed; An information processing device having the above configuration.

2. The identification unit identifies a position of the aircraft during a period during which the switching process is being performed and the aircraft is unable to perform the ground communication and the satellite communication, based on the planned flight route after the switching process is started. The information processing device according to claim 1 .

3. The identification unit identifies a position on the planned flight route after the switching process is started as a position of the aircraft while the switching process is being performed.

3. The information processing device according to claim 1 or 2.

4. The acquisition unit acquires post-switching position information indicating the position of the aircraft after the switching process is completed from the aircraft via the communication means after the switching process is completed.

3. The information processing device according to claim 1 or 2.

5. The information terminal associated with the aircraft further includes a display control unit that displays, on a map in different display modes, an image corresponding to the position of the aircraft while the switching process is being performed and an image corresponding to the position of the aircraft indicated by the post-switching position information. The information processing device according to claim 4.

6. The identification unit identifies a position of the aircraft while the switching process is being performed based on the planned flight path after the switching process is started, the position of the aircraft before the switching process is started, and the position of the aircraft after the switching process is completed.

3. The information processing device according to claim 1 or 2.

7. The acquisition unit acquires meteorological information indicating weather in an area including the aircraft, The identification unit identifies a position of the flying object while the switching process is being performed based on the weather information while the switching process is being performed in addition to the planned flight route after the switching process is started.

3. The information processing device according to claim 1 or 2.

8. The detection unit detects that the switching process has started on the condition that the aircraft outputs information indicating that the switching process has started.

3. The information processing device according to claim 1 or 2.

9. The detection unit detects that the switching process has started on condition that a relationship between the radio wave intensity of the ground communication signal and a threshold value satisfies a switching criterion.

3. The information processing device according to claim 1 or 2.

10. The processor executes obtaining information indicating a planned flight path of the aircraft; A step of detecting that a switching process is being performed to switch communication performed by the flying object between ground communication using a ground communication facility and satellite communication using a communication satellite; determining a position of the aircraft during the switching process after the switching process is completed by using a difference between the planned flight path after the switching process is started and a position of the aircraft after the switching process is completed; An information processing method comprising the steps of:

Images