Simulation scene construction method and device for assisting in completing automatic landing task

Abstract

The invention belongs to the technical field of flight simulation, and relates to a simulation scene construction method and device for assisting in completing an automatic landing task, and the method comprises the steps: S1, loading a mobile platform model and an airplane model to a designated position in a simulation scene; s2, correcting the position of the airplane through the real-time lateral deviation and height deviation, mapping the corrected position into the simulation scene, and marking the corrected position as a point A; s3, vertically and downwards intersecting the sea surface at a point C from the point A, taking a point B where the mobile platform is located as an original point, extending to a point E along the direction vertical to the straight line AC in the plane ABC, vertically and upwards extending the point E to a point D with the same height as the point A, and taking the point D as a track turning point; and S4, connecting the point A to the point D to serve as a level flight track, connecting the point D to the point B to serve as a glide track, and loading the level flight track and the glide track into the simulation scene. According to the method, the burden of simulation personnel is relieved, and the airplane design and development period is shortened.

Description

Technical Field

[0001] This application belongs to the field of flight simulation technology, and particularly relates to a method and device for constructing a simulation visual scene to assist in completing an automatic landing task. Background Art

[0002] In the current aircraft visual scene simulation system, there is a lack of an auxiliary visual display screen for fully automatic landing tasks. Especially for fully automatic landing on a mobile platform, it can only be connected within a certain area behind the mobile platform. At this time, the aircraft is far from the mobile platform in the visual scene, and it is very difficult to lock the landing point in the presented picture. Simulation personnel need to spend a lot of time tracking the mobile platform or the landing point, resulting in low simulation efficiency. Summary of the Invention

[0003] This application provides a method and device for constructing a simulation visual scene to assist in completing an automatic landing task. Through an auxiliary display system, it helps simulation personnel determine whether the functional conditions for fully automatic landing are met.

[0004] The first aspect of this application provides a method for constructing a simulation visual scene to assist in completing an automatic landing task, mainly including: Step S1: Load the mobile platform model and the aircraft model to the specified positions in the simulation visual scene; Step S2: Correct the position of the aircraft through real-time lateral deviation and altitude deviation, map the corrected position to the simulation visual scene, and mark it as point A; Step S3: Vertically intersect the sea surface from point A to point C on the sea surface, jointly construct a plane ABC with point B where the mobile platform model is located. Taking point B as the origin, extend a set distance in the direction perpendicular to the straight line AC within the plane ABC to point E, and vertically extend point E upward to point D at the same altitude as point A. Take point D as the flight path turning point, where the set distance corresponds to the given switching glide design kilometers; Step S4: Connect point A to point D as the level flight path, connect point D to point B as the glide path, and load the level flight path and the glide path into the simulation visual scene.

[0005] Preferably, further included before step S1: Determine that the aircraft enters the fully automatic landing mode according to a preset trigger condition.

[0006] Preferably, the method further includes: Load the lateral deviation, altitude deviation, and / or the distance from the landing point into the simulation visual scene.

[0007] Preferably, the method further includes: Load the real-time wake flow field of the mobile platform tail into the simulation visual scene.

[0008] The second aspect of the present application provides a simulation visual scene construction device for assisting in completing an automatic landing task, mainly including: A model loading module, configured to load a mobile platform model and an aircraft model to a specified position in the simulation visual scene; A starting position determination module, configured to correct the position of the aircraft through real-time lateral deviation and altitude deviation, map the corrected position to the simulation visual scene, and mark it as point A; A key position point determination module, configured to intersect the sea surface vertically downward from point A to point C on the sea surface, jointly construct a plane ABC with point B where the mobile platform model is located, take point B as the origin, extend a set distance in a direction perpendicular to the straight line AC within the plane ABC to point E, and extend point E vertically upward to a point D at the same altitude as point A, and use point D as the flight path turning point, where the set distance corresponds to a given switching glide design kilometer number; An auxiliary trajectory line loading module, configured to connect point A to point D as a level flight trajectory, connect point D to point B as a glide trajectory, and load the level flight trajectory and the glide trajectory to the simulation visual scene.

[0009] Preferably, the device further includes: A full-automatic landing mode determination module, configured to determine that the aircraft enters the full-automatic landing mode according to a preset triggering condition.

[0010] Preferably, the device further includes: A parameter loading module, configured to load lateral deviation, altitude deviation, and / or distance from the landing point to the simulation visual scene.

[0011] Preferably, the device further includes: A wake flow field loading module, configured to load the real-time wake flow field of the mobile platform tail to the simulation visual scene.

[0012] The present application reduces the burden on simulation personnel and shortens the aircraft design and development cycle. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of a simulation visual scene of a preferred embodiment of the simulation visual scene construction method for assisting in completing an automatic landing task in the present application. Detailed Embodiments

[0014] To make the purpose, technical solutions, and advantages of the present application more clear, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0015] The first aspect of the present application provides a method for constructing a simulation visual scene to assist in completing an automatic landing task, as Figure 1 shown, mainly including: Step S1: Load the mobile platform model and the aircraft model to the specified positions in the simulation visual scene; Step S2: Correct the position of the aircraft through real-time lateral deviation and altitude deviation, map the corrected position to the simulation visual scene, and mark it as point A; Step S3: Intersect vertically downward from point A to the sea surface at point C, and jointly construct a plane ABC with point B where the mobile platform model is located. Taking point B as the origin, extend a set distance in the plane ABC along the direction perpendicular to the straight line AC to point E, and extend point E vertically upward to point D at the same height as point A. Take point D as the track turning point, where the set distance corresponds to the given switching glide design kilometer number; Step S4: Connect point A to point D as the level flight track, connect point D to point B as the glide track, and load the level flight track and the glide track into the simulation visual scene.

[0016] In order to adapt to complete the full-automatic landing simulation task of the aircraft, the present application designs an auxiliary display system to help the simulation personnel judge whether the function conditions for automatic landing are met, without using an airborne avionics system with a relatively high development cost, and avoids the cross-linking debugging between the simulation system and the avionics system. The present application does not require additional software investment, reduces the burden on the simulation personnel, and shortens the project development cycle.

[0017] In traditional simulation tests, the positions of the aircraft and the mobile platform are driven by digital models and can be directly loaded to the specified positions in the simulation visual scene in step S1. The auxiliary display data for adapting to automatic landing can be selected from the existing mathematical models without the need for new modeling. Thus, in step S2, the lateral deviation and altitude deviation can be directly called, and in step S3, the switching glide design kilometers can be directly called. With these parameters, each reference point can be determined in steps S2 - S3, and finally, the connection display can be performed in step S4.

[0018] Step S2 is used to determine point A near the position of the aircraft model in the simulation visual scene. The abscissa of point A is the lateral position of the aircraft minus the lateral deviation, and the ordinate of point A is the longitudinal position of the aircraft minus the altitude deviation. Taking point A as the starting point of the ideal landing trajectory, in step S3, first, the mobile platform is used as the end point of the ideal landing trajectory. Point A is perpendicular to the sea surface and intersects the sea surface at point C. In the plane ABC, with point B as the origin, a vertical line AC is extended by a set distance to point E, and point E is vertically extended upward to point D. Point D is at the same altitude as point A and serves as the turning point of the ideal glide trajectory. Then, the connection line of point A, point D, and point B is used as the auxiliary line of the ideal glide trajectory. In step S4, the auxiliary line of the ideal glide trajectory is rendered and displayed in the simulation visual scene, and the auxiliary line of the ideal glide trajectory is updated in real time to facilitate the simulation personnel to judge the landing deviation of the aircraft.

[0019] The final formed simulation visual scene is as Figure 1 shown. In an alternative embodiment, the above simulation visual scene can be used as an auxiliary visual scene and be integrally embedded into the main visual scene. The main visual scene is formed from the pilot's perspective, showing the sea surface and the mobile platform, and the auxiliary visual scene shown Figure 1 is displayed in the lower left corner or other corners of the main visual scene.

[0020] In some alternative embodiments, further comprising before step S1: Determine that the aircraft enters the full - automatic landing mode according to a preset trigger condition.

[0021] In this embodiment, after determining that the aircraft enters the full - automatic landing mode, the lateral deviation, altitude deviation, and the aircraft position coordinates and the mobile platform position coordinates in the simulation model are retrieved in real time, and thus mapped to the simulation visual scene according to a ratio, continuously modifying the positions of point A and point D.

[0022] In some alternative embodiments, the method further comprises: Loading the lateral deviation, altitude deviation, and / or the distance to the landing point into the simulation visual scene.

[0023] In this embodiment, the purpose of the display parameter design is to facilitate the pilot to more accurately judge the distance between the aircraft and the mobile platform.

[0024] In some alternative embodiments, the method further comprises: Loading the real-time wake flow field of the mobile platform into the simulation scene.

[0025] In this embodiment, in the level flight segment (AD) and the glide segment (DB), a three-dimensional vector map of the wake turbulence field of the mobile platform is superimposed, and the disturbance of the airflow on the aircraft attitude is represented by a particle system. For example, a dynamic flow field texture can be generated based on Computational Fluid Dynamics (CFD) data and combined with a Unity Shader to achieve real-time rendering. Among them, the Unity Shader is the core technology in the Unity engine for controlling the rendering effect of objects. Essentially, it is a program running on the GPU. By defining the optical properties, geometric transformations, and dynamic effects of the material surface, it realizes the visual presentation from basic colors to complex lighting effects.

[0026] The second aspect of the present application provides a simulation scene construction device for assisting in completing the automatic landing task corresponding to the above method, mainly including: A model loading module for loading the mobile platform model and the aircraft model to a specified position in the simulation scene; A starting position determination module for correcting the aircraft position through real-time lateral deviation and altitude deviation, mapping the corrected position to the simulation scene, and marking it as point A; A key position point determination module for intersecting the sea surface vertically downward from point A to the sea surface at point C, jointly constructing a plane ABC with point B where the mobile platform model is located, taking point B as the origin, extending a set distance in the direction perpendicular to the straight line AC in the plane ABC to point E, and extending point E vertically upward to a point D at the same altitude as point A, and taking point D as the flight path turning point, where the set distance corresponds to a given switching glide design kilometer number; An auxiliary trajectory line loading module for connecting point A to point D as the level flight trajectory, connecting point D to point B as the glide trajectory, and loading the level flight trajectory and the glide trajectory into the simulation scene.

[0027] In some alternative embodiments, the device further comprises: A full-automatic landing mode determination module for determining that the aircraft enters the full-automatic landing mode according to a preset trigger condition.

[0028] In some alternative embodiments, the device further comprises: A parameter loading module for loading the lateral deviation, altitude deviation, and / or the distance from the landing point into the simulation scene.

[0029] In some alternative embodiments, the device further comprises: Wake flow field loading module, which is used to load the real-time wake flow field of the mobile platform into the simulation visual scene.

[0030] As mentioned above, it is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by this application should be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A method for constructing a simulation visual scene to assist in completing an automatic landing task, characterized in that, Including: Step S1: Load the mobile platform model and the aircraft model to the specified positions in the simulation visual scene; Step S2: Correct the position of the aircraft through real-time lateral deviation and altitude deviation, map the corrected position to the simulation visual scene, and mark it as point A; Step S3: Vertically intersect the sea surface downward from point A to point C on the sea surface, jointly construct plane ABC with point B where the mobile platform model is located, with point B as the origin, extend a set distance in the direction perpendicular to line AC within plane ABC to point E, and vertically extend point E upward to point D at the same altitude as point A, and use point D as the track turning point, where the set distance corresponds to the given switching glide design kilometers; Step S4: Connect point A to point D as the level flight track, connect point D to point B as the glide track, and load the level flight track and the glide track to the simulation visual scene.

2. The method for constructing a simulation visual scene to assist in completing an automatic landing task according to claim 1, characterized in that, Before step S1, it further includes: Determine that the aircraft enters the fully automatic landing mode according to the preset trigger condition.

3. The method for constructing a simulation visual scene to assist in completing an automatic landing task according to claim 1, characterized in that, The method further includes: Load the lateral deviation, altitude deviation, and / or the distance from the landing point to the simulation visual scene.

4. The method for constructing a simulation visual scene to assist in completing an automatic landing task according to claim 1, characterized in that, The method further includes: Load the real-time tail flow field of the mobile platform to the simulation visual scene.

5. A device for constructing a simulation visual scene to assist in completing an automatic landing task, characterized in that, Including: A model loading module for loading the mobile platform model and the aircraft model to the specified positions in the simulation visual scene; A starting position determination module for correcting the position of the aircraft through real-time lateral deviation and altitude deviation, mapping the corrected position to the simulation visual scene, and marking it as point A; A key position point determination module for vertically intersecting the sea surface downward from point A to point C on the sea surface, jointly constructing plane ABC with point B where the mobile platform model is located, with point B as the origin, extending a set distance in the direction perpendicular to line AC within plane ABC to point E, and vertically extending point E upward to point D at the same altitude as point A, and using point D as the track turning point, where the set distance corresponds to the given switching glide design kilometers; An auxiliary track line loading module for connecting point A to point D as the level flight track, connecting point D to point B as the glide track, and loading the level flight track and the glide track to the simulation visual scene.

6. The device for constructing a simulation visual scene to assist in completing an automatic landing task according to claim 5, characterized in that, The device further includes: A fully automatic landing mode determination module for determining that the aircraft enters the fully automatic landing mode according to the preset trigger condition.

7. The device for constructing a simulation visual scene to assist in completing an automatic landing task according to claim 5, characterized in that, The device further includes: A parameter loading module for loading the lateral deviation, altitude deviation, and / or the distance from the landing point to the simulation visual scene.

8. The device for constructing a simulation visual scene to assist in completing an automatic landing task according to claim 5, characterized in that, The device further includes: A wake flow field loading module for loading the real-time tail flow field of the mobile platform to the simulation visual scene.

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