Data link-based enhanced entry and exit display device

Abstract

The enhanced arrival and departure display device based on data link sends the arrival and departure procedures related to the flight mission and mission airport to the aircraft through the high-access data link. The aircraft enhanced chart terminal completes information acquisition, decryption and data display, and provides flight assistance functions for the crew. It includes: high-access data link transmission system, arrival and departure procedure digital processing system, arrival and departure procedure graphical display system, and arrival and departure procedure flight navigation system.

Description

Technical Field

[0001] The present invention relates to the technical field of civil aviation airspace data processing, and in particular to an enhanced approach and departure display device based on a data link, which sends approach and departure procedures to aircraft based on a high-access data link system, provides a graphical display function based on an enhanced flight chart on the crew side, and effectively improves flight safety. Background Art

[0002] In recent years, with the rapid development of my country's civil aviation, the complexity of terminal airspace has been greatly improved, and the work pressure of crews and control staff has increased. How to ensure the operation safety of aircraft in the terminal area in high-density traffic flow, reduce the workload of crews and control staff, and eliminate the hidden dangers of aircraft operation safety under the busy airspace has become a major problem that needs to be solved in terminal area operations. Summary of the invention

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide an enhanced approach and departure display device based on a data link, which sends the approach and departure procedures related to the flight mission and the mission airport to the aircraft through a high-path data link. The aircraft enhanced aeronautical chart terminal completes information acquisition, decryption and data display, and provides flight assistance functions for the crew.

[0004] The technical solution of the present invention is: the data link-based enhanced approach and departure display device comprises: a high-path data link transmission system, an approach and departure procedure digital processing system, an approach and departure procedure graphical display system, and an approach and departure procedure flight navigation system;

[0005] The high-path data link transmission system comprises:

[0006] In the entry and departure procedure information receiving module, the ground terminal and the terminal encrypt and decrypt the transmission message according to the specified encryption algorithm, and add the message body CRC check code transmission during the transmission process. After the mobile terminal completes the information decryption, the information CRC code is calculated and compared with the CRC code transmitted by the ground terminal to ensure data consistency and integrity;

[0007] The data information processing module performs secondary processing on the information before transmitting the entry and departure procedures to the entry and departure procedure digital processing system. The data between multiple systems is processed and stored in isolation to prevent abnormalities that may be caused by strong data coupling;

[0008] Information sending module, after the mobile terminal goes online, it first sends link establishment information to the ground terminal to establish the entry and departure procedure session. When the entry and departure procedure instructions sent by the ground terminal are received and decrypted normally,

[0009] After verification, reply to the ground terminal to confirm the status information.

[0010] The present invention obtains the approach and departure procedures through a high-path data link and realizes the superposition of vector approach and departure procedures, and combines with a multi-data source positioning system to effectively help pilots better complete the execution of approach and departure procedures, improve route flight safety, and reduce workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the data link-based enhanced approach and departure display device according to the present invention. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0013] In order to make the description of the present disclosure more detailed and complete, the following is an illustrative description of the implementation and specific embodiments of the present invention; however, this is not the only form of implementing or using the specific embodiments of the present invention. The implementation covers the features of multiple specific embodiments and the device steps and sequences used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences.

[0014] like Figure 1 As shown, this data link-based enhanced approach and departure display device includes: a high-path data link transmission system, an approach and departure procedure digital processing system, an approach and departure procedure graphic display system, and an approach and departure procedure flight navigation system;

[0015] The high-path data link transmission system comprises:

[0016] In the entry and departure procedure information receiving module, to ensure transmission security, the ground terminal and the terminal encrypt and decrypt the transmission message according to the specified encryption algorithm. To ensure the integrity of the decrypted data, the message body CRC check code is added during the transmission process. After the mobile terminal completes the information decryption, the information CRC code is calculated and compared with the CRC code transmitted by the ground terminal to ensure data consistency and integrity;

[0017] The data information processing module performs secondary processing on the information before transmitting the entry and departure procedures to the entry and departure procedure digital processing system. The data between multiple systems is processed and stored in isolation to prevent abnormalities that may be caused by strong data coupling;

[0018] The information sending module first sends link establishment information to the ground end after the mobile end goes online to establish an entry and departure procedure session. When the entry and departure procedure instructions sent by the ground end are received and decrypted and verified normally, a message confirmation status information is sent to the ground end.

[0019] The present invention obtains the approach and departure procedures through a high-path data link and realizes the superposition of vector approach and departure procedures, and combines with a multi-data source positioning system to effectively help pilots better complete the execution of approach and departure procedures, improve route flight safety, and reduce workload.

[0020] Preferably, in order to ensure the security of transmitted messages, the digital processing system for approach and departure procedures adopts dynamic encryption methods rather than fixed password fields. Taking into account the limitations of the ground-to-air data link transmission character set, the airborne enhanced chart system first decodes the message character set after receiving the encrypted message, and after restoring the original encrypted message, calculates the corresponding private key of the message based on the flight mission, time, message authentication code information and the agreed algorithm. The private key contains two parts: a decryption private key and the number of message encryption rounds. The airborne enhanced chart uses a specified round function based on the number of encryption rounds in the message in combination with the private key and the public key to complete the subsequent decryption logic.

[0021] Preferably, the digital processing system for arrival and departure procedures includes:

[0022] Arrival and departure procedure parsing module: after the aircraft mobile terminal receives the arrival and departure procedure transmitted from the high-path data link transmission system, it parses the corresponding flight procedure according to its arrival and departure procedure code, and searches for local data to realize data superposition based on the GIS engine;

[0023] Arrival and departure procedure data storage module;

[0024] The digital analysis module for arrival and departure data searches for the waypoints / stations along the way of the current arrival and departure procedure according to the arrival and departure procedure code, analyzes the relevant information and organizes it into a standardized data model.

[0025] Preferably, the approach and departure procedure data storage module consists of two parts of data: a vector class and a terminal area map class; wherein the vector class data includes the approach and departure procedure code, the approach and departure procedure type, the airport four-character code, each waypoint / station code and related basic information, and uses the approach and departure procedure code, the approach and departure procedure type and the airport four-character code as indexes to achieve fast retrieval, and is rendered in real time after coordinate conversion based on the approach and departure procedure graphical display system and superimposed on the route map end; the terminal area map class data includes the approach and departure procedure code, the approach and departure procedure type, the airport four-character code and the runway call sign information, and uses the approach and departure procedure code and the airport four-character code as indexes to achieve fast retrieval, and is rendered in real time after coordinate conversion, rotation and eccentricity based on the approach and departure procedure graphical display system.

[0026] Preferably, the entry and departure procedure graphical display system comprises:

[0027] The raw data overlay module of the arrival and departure procedure data pre-processes the terminal area map and verifies the latitude and longitude coordinates and rotation angle information corresponding to the waypoints, and overlays them on the high-altitude route map. When the map is zoomed in and out, the map is zoomed in and out, and the coordinates are recalibrated for the key points.

[0028] The standard image element transparency processing module performs transparency rasterization processing on the terminal area image pixel by pixel, and provides a variety of transparency image display and overlay solutions;

[0029] The entry and departure procedure altitude setting module automatically switches to display different terminal procedure diagrams at different flight altitudes according to different flight phases. When manually pinching and zooming the map, it automatically switches to display APP, SID, and STAR program data according to the current zoom altitude of the map and the current entry and departure status.

[0030] The vector approach and departure procedure overlay module analyzes the waypoints / stations along the way, extracts the location information and overlays it on the map. Combined with the approach and departure procedure flight navigation system, it provides a clearer and more intuitive interface browsing method for aviation crews.

[0031] Preferably, the arrival and departure procedure graphical display system further comprises:

[0032] The manual switching module for approach and departure procedures provides group switching of approach and departure procedures based on airports and runways, and obtains procedure data based on the selected procedure code and overlays it on the high-altitude route map.

[0033] Preferably, the approach and departure procedure flight navigation system comprises:

[0034] Multi-data source fusion positioning module: the system uses the positioning information of multiple data sources and fuses them to extract the current positioning position, meeting the navigation needs under various conditions;

[0035] Multi-data source fusion angle calculation module: the system uses the angle information of multiple data sources and extracts the main angle content as the current navigation angle to achieve superimposed display;

[0036] The arrival and departure segment differentiation display module distinguishes the currently flying program segment, the flown program segment, and the expected program segment based on the current positioning information, and realizes differentiated display of different states.

[0037] The present invention can achieve the following beneficial effects:

[0038] By acquiring the approach and departure procedures through the high-path data link and realizing the superposition of vector approach and departure procedures, combined with the multi-data source positioning system, it can effectively help pilots better complete the execution of approach and departure procedures, improve route flight safety, and reduce workload.

[0039] With traditional voice control, the arrival and departure procedures must be announced by voice before the flight approaches or takes off. With the present invention, the pilot can view the arrival and departure procedures of the mission airport on the enhanced mobile terminal. When the aircraft executes the approach and departure procedures, the flight arrival and departure procedures are automatically obtained based on the data link and automatically superimposed on the enhanced aeronautical chart, avoiding human errors such as mishearing and missed hearing caused by traditional voice control, effectively improving the control and crew operation efficiency, and reducing workload.

[0040] The enhanced display of approach and departure procedures based on data link, in addition to the automatic approach and departure procedure overlay and graphical display based on data link, can also automatically superimpose the current positioning and flight plan tasks. It serves as an important reference for pilots during take-off and landing, provides safety guarantees for flight missions, effectively reduces the pilot's route deviation when performing approach and departure procedures, avoids descending to the specified minimum safe altitude in advance during landing, and effectively improves the aircraft's operating efficiency and safety level during take-off and landing.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The enhanced display device for approach and departure based on data link is characterized by: It includes: High-path data link transmission system, digital processing system for approach and departure procedures, graphic display system for approach and departure procedures, and flight navigation system for approach and departure procedures; The high-path data link transmission system comprises: In the entry and departure procedure information receiving module, the ground terminal and the terminal encrypt and decrypt the transmission message according to the specified encryption algorithm, and add the message body CRC check code transmission during the transmission process. After the terminal completes the information decryption, it calculates the information CRC code and compares it with the ground terminal transmission CRC code to ensure data consistency and integrity; The data information processing module performs secondary processing on the information before transmitting the entry and departure procedures to the entry and departure procedure digital processing system. The data between multiple systems is processed and stored in isolation to prevent abnormalities that may be caused by strong data coupling; Information sending module: after the terminal goes online, it first sends link establishment information to the ground terminal to establish the entry and departure procedure session. After receiving the entry and departure procedure instructions sent by the ground terminal and decrypting and verifying them normally, it replies to the ground terminal with a message to confirm the status information; The digital processing system for approach and departure procedures adopts dynamic encryption means. Considering the transmission character set limitation of ground-to-air data link, the enhanced chart system on the airborne end first decodes the character set of the message after receiving the encrypted message. After restoring the original encrypted message, the corresponding private key of the message is calculated according to the flight mission, time, message authentication code information and the agreed algorithm. The private key includes two parts: the decryption private key and the number of message encryption rounds. The enhanced chart system on the airborne end uses the specified round function combined with the private key and the public key to complete the subsequent decryption logic according to the number of encryption rounds in the message. The digital processing system for the arrival and departure procedures includes: Arrival and departure procedure parsing module: after receiving the arrival and departure procedures transmitted from the high-path data link transmission system, the terminal parses the corresponding flight procedures according to the arrival and departure procedure codes, and searches for local data to realize data overlay based on the GIS engine; Arrival and departure procedure data storage module; The digital analysis module for arrival and departure data searches for the waypoints / stations along the way of the current arrival and departure procedure according to the arrival and departure procedure code, analyzes the relevant information and organizes it into a standardized data model; Terminal area map data includes the code of the approach and departure procedure, the type of approach and departure procedure, the four-character airport code, and the runway call sign information. The approach and departure procedure code and the four-character airport code are used as indexes to achieve fast retrieval. The approach and departure procedure graphical display system is rendered in real time after coordinate conversion, rotation, and eccentricity. The arrival and departure procedure graphical display system comprises: The raw data overlay module of the arrival and departure procedure data pre-processes the terminal area map and verifies the latitude and longitude coordinates and rotation angle information corresponding to the waypoints, and overlays it on the high-altitude route map. When the map is zoomed in and out, the coordinates are recalibrated for the key points. The standard image element transparency processing module performs transparency rasterization processing on the terminal area map pixel by pixel, and provides a variety of transparency image display overlay solutions. The entry and departure procedure altitude setting module automatically switches to display different terminal procedure diagrams at different flight altitudes according to different flight phases. When manually pinching and zooming the map, it automatically switches to display APP, SID, and STAR program data according to the current zoom altitude of the map and the current entry and departure status. The vector approach and departure procedure overlay module analyzes the waypoints / stations along the way, extracts the location information and overlays it on the map. Combined with the approach and departure procedure flight navigation system, it provides a clearer and more intuitive interface browsing method for aviation crews.

2. The data link-based enhanced arrival and departure display device according to claim 1, characterized in that: The arrival and departure procedure graphical display system also includes: The manual switching module for approach and departure procedures provides group switching of approach and departure procedures based on airports and runways, and obtains procedure data based on the selected procedure code and overlays it on the high-altitude route map.

3. The enhanced arrival and departure display device based on data link according to claim 2, characterized in that: The arrival and departure procedure flight navigation system includes: Multi-data source fusion positioning module: the system uses the positioning information of multiple data sources and fuses them to extract the current positioning position, meeting the navigation needs under various conditions; Multi-data source fusion angle calculation module: the system uses the angle information of multiple data sources and extracts the main angle content as the current navigation angle to achieve superimposed display; The arrival and departure segment differentiation display module distinguishes the currently flying program segment, the flown program segment, and the expected program segment based on the current positioning information, and realizes differentiated display of different states.

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