A simulated weather radar scanning system based on ARINC661 and its scanning method

Abstract

The present invention provides an ARINC661-based simulated weather radar scanning system and a scanning method thereof. The simulated weather radar scanning system comprises a flight simulation module, a user application module, and a cockpit display system module. Ethernet is used for data exchange among the flight simulation module, the user application module, and the cockpit display system module. The scanning method of the system comprises the following steps: step 1, the flight simulation model module calculates simulated flight data and simulated weather radar echo data; step 2, the user application module calculates ARINC661 image data; and step 3, the cockpit display system module displays the simulated weather radar image. The present invention solves the dependence of traditional methods on weather radar simulators, thereby reducing research and development costs. The system complies with ARINC661 specifications, uses ARINC661 controls, maintains consistency in software and process development with real aircraft, meets airworthiness certification standards, and saves development costs.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated avionics systems for civil aircraft, and in particular to an ARINC661-based simulated weather radar scanning system and a scanning method thereof. Background Art

[0002] At present, there are two main ways to implement simulated airborne weather radar systems. The first is to rely on a radar simulation simulator to generate weather radar scanning echo images. The simulation software needs to calculate the radar beam scanning range in real time, partially refresh the output echo image, and the display software parses the image frame by frame for display. The second is that the radar simulation software only generates real-time echo images of the weather radar, and the display software completes the simulated scanning and refreshing display effect.

[0003] The main problems with the existing simulated airborne weather radar systems and their scanning methods in terms of simulated scanning effects include the following aspects:

[0004] (1) The first method relies on a radar simulator to generate weather radar scanning echo images, which places high demands on the performance of the simulation software. It needs to calculate the relative position between the aircraft flight trajectory model and the weather model, the radar beam range, and generate echo images in real time. It usually requires the use of separate radar simulator hardware, which is costly to implement.

[0005] (2) In the second method, the radar simulation software only generates the real-time echo image of the weather radar, and the display software completes the simulated scanning and refreshing display effect. Although it does not require radar simulation simulator hardware, it only requires a simulation model implemented by software to output the relative position between the aircraft and the weather echo. The display software uses dual-channel image caching and image synthesis technology to achieve the scanning effect. However, the existing implementation method is mainly based on GDI and image processing software under the Windows operating system, which does not comply with the ARINC611 specification.

[0006] Therefore, it is necessary to provide an aviation ARINC661-based simulated weather radar scanning system and scanning method to solve the traditional method's dependence on weather radar simulators and reduce R&D costs; at the same time, it also complies with the ARINC661 specification and is fully implemented using A661 controls to maintain development software and processes consistent with the real aircraft, so as to meet airworthiness certification and other standards and save development costs. Summary of the Invention

[0007] To solve the problems in the prior art, the present invention provides a simulated weather radar scanning system and scanning method based on ARINC661, which can solve the traditional method's dependence on weather radar simulators and reduce research and development costs. At the same time, it also complies with the ARINC661 specification and can be fully implemented using ARINC661 controls to maintain development software and processes consistent with the real machine, thereby meeting standards such as airworthiness certification and saving development costs.

[0008] To achieve the above object, the present invention provides the following technical solution: a simulated weather radar scanning system based on ARINC661, comprising:

[0009] The flight simulation module is used to establish a flight simulation model using simulation software, simulate the operation process of a real aircraft, and establish an atmospheric model to calculate simulated flight data and simulated weather radar echo data for use by the user application module;

[0010] The user application module is used to implement the logic of the simulated weather radar scanning system based on the ARINC661 standard, calculate the ARINC661 image data of the simulated scanned synthetic image, and output it to the cockpit display system module through the ARINC661 interface;

[0011] Cockpit display system module, used to receive ARINC661 image data from the user application module and display simulated weather radar images;

[0012] The flight simulation module, user application module and cockpit display system module above use Ethernet for data exchange.

[0013] In a preferred technical solution, the user application module is used to realize the ARINC661-based radar echo display simulation dynamic sector scanning and calculate the ARINC661 image data at each moment in real time.

[0014] The preferred technical solution is that the user application module includes a data analysis module, an image analysis module, a data storage module, an image storage module, a simulation scanning module, an image synthesis module, and an ARINC661 interface conversion module;

[0015] The data parsing module is used to parse the real-time simulated flight data and simulated weather radar echo data of the flight simulation module, and store the parsed data in the data storage module;

[0016] The data storage module is used to store the parsed real-time data for the simulation scanning module and the image synthesis module to call;

[0017] The image analysis module is used to parse the real-time image data from the simulated weather radar echo data and store it in the image storage module;

[0018] The image storage module stores the analyzed real-time image data for use by the simulation scanning module and the image synthesis module;

[0019] The simulation scanning module is used to simulate the radar sector scanning mode and transmit the simulation results to the image synthesis module;

[0020] The image synthesis module is used to read data from the data storage module and the image storage module, and synthesize the data read from the image storage module according to the simulation result of the simulation scanning module, and transmit the synthesized image to the ARINC661 interface conversion module;

[0021] The ARINC661 interface conversion module is used to convert the synthesized image data into data that conforms to the ARINC661 format and transmit it to the cockpit display system module through the ARINC661 network communication interface.

[0022] In a preferred technical solution, the simulation scanning module simulates the radar sector scanning mode and transmits the simulation results to the image synthesis module in the following specific process:

[0023] Define the scanning cycle T, and divide each scanning cycle T into M and N stages. In the M stage, forward scanning is performed, and the scanning line is scanned from 0° to 180°. In the N stage, reverse scanning is performed, and the scanning line is scanned from 180° to 0°. Based on the cycle and stage corresponding to each moment, a virtual scanning line is calculated, and the area of ​​the scanned image that needs to be updated is determined through the scanning line. The calculation result is transmitted to the image synthesis module.

[0024] In a preferred technical solution, the cockpit display system module includes a base layer, a map layer, a map projection layer, and a grid image drawing layer in sequence, and each layer is a parent layer that accommodates the next layer;

[0025] The base layer is the base layer of the map layer, map projection layer, and grid image drawing layer, and is used to manage the size, position, and display status of the layer;

[0026] The map layer is used to provide a basic drawing framework and define the position of the projection reference point. Other drawing elements can be positioned by combining the projection reference point with the aircraft position.

[0027] The map projection layer defines a projection system for calculating the projection positions of all aerial and ground image elements on the map;

[0028] The grid image drawing layer is used to provide a map in a grid form, receive ARINC661 image data transmitted from the user application module through the ARINC661 network communication interface, and fill the ARINC661 image data into the corresponding grid in an array.

[0029] Another object of the present invention is to provide an ARINC661-based simulated weather radar scanning method of a simulated weather radar scanning system, which comprises the following steps:

[0030] Step 1: Use simulation software to build a flight simulation model in the flight simulation module to simulate the operation process of a real aircraft, and build an atmospheric model to calculate simulated flight data and simulated weather radar echo data for use in the user application module;

[0031] Step 2: The user application module calculates ARINC 661 image data of the simulated scanned synthetic image based on the ARINC 661 standard, and outputs the data to the cockpit display system module through the ARINC 661 interface;

[0032] Step 3: The cockpit display system module receives the ARINC661 image data from the user application module and displays the simulated weather radar image.

[0033] In a preferred technical solution, the user application module in step 2 includes a data analysis module, an image analysis module, a data storage module, an image storage module, a simulation scanning module, an image synthesis module, and an ARINC661 interface conversion module; the simulation scanning module simulates a radar sector scanning mode and transmits the simulation results to the image synthesis module; the user application module uses an ARINC661-based radar echo display to simulate dynamic sector scanning and calculates ARINC661 image data at each moment in real time.

[0034] The preferred technical solution is as follows:

[0035] First, the data parsing module parses the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores the parsed data in the data storage module; the image parsing module parses the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores the real-time image data in the image storage module;

[0036] Secondly, the simulation scanning module reads data from the data storage module and the graphic storage module, simulates the radar sector scanning mode, and transmits the simulation results to the image synthesis module;

[0037] Then, the image synthesis module reads data from the data storage module and the image storage module, synthesizes the data read from the image storage module according to the simulation result of the simulation scanning module, and transmits the synthesized image to the ARINC661 interface conversion module;

[0038] Finally, the ARINC661 interface conversion module converts the synthesized image data into data that conforms to the ARINC661 format and transmits it to the cockpit display system module through the ARINC661 network communication interface.

[0039] In the preferred technical solution, the specific process of the simulation scanning module simulating the radar sector scanning mode in step 2 and transmitting the simulation results to the image synthesis module is as follows:

[0040] First, define the scanning period T;

[0041] Secondly, each scanning cycle T is divided into M phase and N phase;

[0042] Then, in the M phase of each scanning cycle T, a forward scan is performed, and the scan line is scanned from 0° to 180°; in the N phase of each scanning cycle T, a reverse scan is performed, and the scan line is scanned from 180° to 0°; according to the cycle and phase corresponding to each moment, a virtual scan line is calculated, and the area of ​​the scanned image that needs to be updated is determined through the scan line, and the calculation result is transmitted to the image synthesis module.

[0043] In a preferred technical solution, the cockpit display system module in step three includes a base layer, a map layer, a map projection layer, and a grid image drawing layer; the base layer is the base layer of the map layer, the map projection layer, and the grid image drawing layer, and manages the size, position, and display status of the entire layer; the map layer provides a basic drawing framework, defines the position of the projection reference point, and other drawing elements can be located by combining the projection reference point with the aircraft position; the map projection layer defines a projection system, calculates the projection position of all air and ground image elements on the map; the grid image drawing layer provides a grid-formed map, receives ARINC661 image data transmitted from the user application module through the ARINC661 network communication interface, fills the ARINC661 image data into the corresponding grid according to the array, and finally displays the simulated weather radar scanning synthetic image on the grid image drawing layer.

[0044] Compared with the prior art, the ARINC661-based simulated weather radar scanning system and scanning method of the present invention have the following beneficial effects:

[0045] 1. The present invention solves the dependence of traditional methods on weather radar simulators and reduces R&D costs.

[0046] 2. The present invention complies with ARINC661 specifications and is fully implemented using ARINC661 controls, which can maintain development software and processes consistent with the real aircraft to meet standards such as airworthiness certification and save development costs.

[0047] 3. The functional split of the weather radar simulator is achieved, and the simulation scanning algorithm is placed in the user application based on ARINC661, reducing the dependence on the radar simulator. The communication between the user application and the cockpit display system software can adopt a communication mode that fully complies with the ARINC661 specification, using the same development software and development process as the real aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 The following is a schematic diagram of the software architecture of a simulated weather radar scanning system based on ARINC661 in the present invention. DETAILED DESCRIPTION

[0049] The relevant terms in the present invention are explained as follows:

[0050] Cockpit Display System (CDS): Cockpit display system;

[0051] User Application (UA): User application;

[0052] A661_Layer: base layer;

[0053] A661_Map: map layer;

[0054] A661_Map_Source: map projection layer;

[0055] A661_MapGrid: grid image drawing layer;

[0056] ARINC661: Cockpit display and control system and user system interface standard.

[0057] Reference Figure 1 The present invention further describes an ARINC661-based simulated weather radar scanning system architecture and a scanning method thereof.

[0058] like Figure 1 Shown: A simulated weather radar scanning system based on ARINC661, including:

[0059] The flight simulation module is used to establish a flight simulation model using simulation software, simulate the operation process of a real aircraft, and establish an atmospheric model to calculate simulated flight data and simulated weather radar echo data for use by the user application module;

[0060] The user application module is used to implement the logic of the simulated weather radar scanning system based on the ARINC661 standard, calculate the ARINC661 image data of the simulated scanned synthetic image, and output it to the cockpit display system module through the ARINC661 interface. The user application module implements the radar echo display simulated dynamic sector scanning based on the ARINC661 standard and calculates the ARINC661 image data at each moment in real time. The user application module includes a data parsing module, an image parsing module, a data storage module, an image storage module, a simulated scanning module, an image synthesis module, and an ARINC661 interface conversion module.

[0061] The data parsing module is used to parse the real-time simulated flight data and simulated weather radar echo data of the flight simulation module, and save the parsed data in the data storage module; the data storage module is used to store the parsed real-time data for use by the simulation scanning module and the image synthesis module; the image parsing module is used to parse the real-time image data from the simulated weather radar echo data and save it in the image storage module; the image storage module stores the parsed real-time image data for use by the simulation scanning module and the image synthesis module; the simulation scanning module is used to simulate the radar sector scanning mode and transmit the simulation results to the image synthesis module; the image synthesis module is used to read data from the data storage module and the image storage module, and synthesize the data read from the image storage module according to the simulation results of the simulation scanning module, and transmit the synthesized image to the ARINC661 interface conversion module; the ARINC661 interface conversion module is used to convert the synthesized image data into data that conforms to the ARINC661 format, and transmit it to the cockpit display system module through the ARINC661 network communication interface.

[0062] The specific process of the simulation scanning module simulating the radar sector scanning mode and transmitting the simulation results to the image synthesis module is as follows:

[0063] Define the scanning cycle T, and divide each scanning cycle T into M and N stages. In the M stage, forward scanning is performed, and the scanning line is scanned from 0° to 180°. In the N stage, reverse scanning is performed, and the scanning line is scanned from 180° to 0°. Based on the cycle and stage corresponding to each moment, a virtual scanning line is calculated, and the area of ​​the scanned image that needs to be updated is determined through the scanning line. The calculation result is transmitted to the image synthesis module.

[0064] A cockpit display system module is configured to receive ARINC661 image data from a user application module and display simulated weather radar images. The module sequentially comprises a base layer, a map layer, a map projection layer, and a grid image drawing layer, each layer being a parent layer for the next layer. The base layer serves as the base layer for the map layer, map projection layer, and grid image drawing layer, and is configured to manage the size, position, and display status of the layers. The map layer provides a basic drawing framework, defines the position of a projection reference point, and uses the projection reference point in combination with the aircraft position to locate other drawing elements. The map projection layer defines a projection system for calculating the projection positions of all aerial and ground image elements on the map. The grid image drawing layer provides a map in grid form, receives ARINC661 image data transmitted from the user application module via an ARINC661 network communication interface, and fills the ARINC661 image data into corresponding grids in an array.

[0065] The flight simulation module, user application module and cockpit display system module above use Ethernet for data exchange.

[0066] The working process of a simulated weather radar scanning system based on ARINC661 in this embodiment is as follows, including the following steps:

[0067] Step 1: Use simulation software to build a flight simulation model in the flight simulation module to simulate the operation process of a real aircraft, and build an atmospheric model to calculate simulated flight data and simulated weather radar echo data for use in the user application module;

[0068] Step 2: The user application module calculates ARINC661 image data of the simulated scanned synthetic image based on the ARINC661 standard, and outputs the data to the cockpit display system module through the ARINC661 interface. The user application module includes a data analysis module, an image analysis module, a data storage module, an image storage module, a simulated scanning module, an image synthesis module, and an ARINC661 interface conversion module. The simulated scanning module simulates the radar sector scanning mode and transmits the simulation result to the image synthesis module. The user application module uses the ARINC661-based radar echo display to simulate dynamic sector scanning and calculates the ARINC661 image data at each moment in real time.

[0069] The specific process is as follows:

[0070] First, the data parsing module parses the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores the parsed data in the data storage module; the image parsing module parses the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores the real-time image data in the image storage module;

[0071] Secondly, the simulation scanning module reads data from the data storage module and the graphic storage module, simulates the radar sector scanning mode, and transmits the simulation results to the image synthesis module;

[0072] Then, the image synthesis module reads data from the data storage module and the image storage module, synthesizes the data read from the image storage module according to the simulation result of the simulation scanning module, and transmits the synthesized image to the ARINC661 interface conversion module;

[0073] Finally, the ARINC661 interface conversion module converts the synthesized image data into data that conforms to the ARINC661 format and transmits it to the cockpit display system module through the ARINC661 network communication interface.

[0074] The specific process of the above simulation scanning module simulating the radar sector scanning mode and transmitting the simulation results to the image synthesis module is as follows:

[0075] First, define the scanning period T;

[0076] Secondly, each scanning cycle T is divided into M phase and N phase;

[0077] Then, in the M phase of each scanning cycle T, a forward scan is performed, and the scan line is scanned from 0° to 180°; in the N phase of each scanning cycle T, a reverse scan is performed, and the scan line is scanned from 180° to 0°; according to the cycle and phase corresponding to each moment, a virtual scan line is calculated, and the area of ​​the scanned image that needs to be updated is determined through the scan line, and the calculation result is transmitted to the image synthesis module.

[0078] Step 3: The cockpit display system module receives the ARINC661 image data from the user application module and displays the simulated weather radar image.

[0079] The specific division of labor and processing process is as follows: the base layer is the base layer of the map layer, map projection layer, and grid image drawing layer, which manages the size, position and display status of the entire layer; the map layer provides a basic drawing framework, defines the position of the projection reference point, and can locate other drawing elements through the projection reference point combined with the aircraft position; the map projection layer defines a projection system to calculate the projection position of all aerial and ground image elements on the map; the grid image drawing layer provides a grid-form map, receives ARINC661 image data transmitted by the user application module through the ARINC661 network communication interface, fills the ARINC661 image data into the corresponding grid according to the array, and finally displays the simulated weather radar scanning synthetic image on the grid image drawing layer.

[0080] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A simulated weather radar scanning system based on ARINC661, characterized by: It includes: The flight simulation module is used to establish a flight simulation model using simulation software, simulate the operation process of a real aircraft, and establish an atmospheric model to calculate simulated flight data and simulated weather radar echo data for use by the user application module; The user application module is used to implement the logic of the simulated weather radar scanning system based on the ARINC661 standard, calculate the ARINC661 image data of the simulated scanned synthetic image, and output it to the cockpit display system module through the ARINC661 interface; Cockpit display system module, used to receive ARINC661 image data from the user application module and display simulated weather radar images; The flight simulation module, user application module and cockpit display system module above use Ethernet for data exchange.

2. The ARINC661-based simulated weather radar scanning system according to claim 1, characterized in that: The user application module is used to realize the ARINC661-based radar echo display simulation dynamic sector scanning and calculate the ARINC661 image data at each moment in real time.

3. The ARINC661-based simulated weather radar scanning system according to claim 2, characterized in that: The user application module includes a data analysis module, an image analysis module, a data storage module, an image storage module, a simulation scanning module, an image synthesis module, and an ARINC661 interface conversion module; The data parsing module is used to parse the real-time simulated flight data and simulated weather radar echo data of the flight simulation module, and store the parsed data in the data storage module; The data storage module is used to store the parsed real-time data for the simulation scanning module and the image synthesis module to call; The image analysis module is used to parse the real-time image data from the simulated weather radar echo data and store it in the image storage module; The image storage module stores the analyzed real-time image data for use by the simulation scanning module and the image synthesis module; The simulation scanning module is used to simulate the radar sector scanning mode and transmit the simulation results to the image synthesis module; The image synthesis module is used to read data from the data storage module and the image storage module, and synthesize the data read from the image storage module according to the simulation result of the simulation scanning module, and transmit the synthesized image to the ARINC661 interface conversion module; The ARINC661 interface conversion module is used to convert the synthesized image data into data that conforms to the ARINC661 format and transmit it to the cockpit display system module through the ARINC661 network communication interface.

4. The ARINC661-based simulated weather radar scanning system according to claim 3, characterized in that: The specific process of the simulation scanning module simulating the radar sector scanning mode and transmitting the simulation results to the image synthesis module is as follows: Define the scanning cycle T, and divide each scanning cycle T into M and N stages. In the M stage, forward scanning is performed, and the scanning line is scanned from 0° to 180°. In the N stage, reverse scanning is performed, and the scanning line is scanned from 180° to 0°. Based on the cycle and stage corresponding to each moment, a virtual scanning line is calculated, and the area of ​​the scanned image that needs to be updated is determined through the scanning line. The calculation result is transmitted to the image synthesis module.

5. The ARINC661-based simulated weather radar scanning system according to claim 4, characterized in that: The cockpit display system module includes a base layer, a map layer, a map projection layer, and a grid image drawing layer in sequence, and each layer is a parent layer that contains the next layer; The base layer is the base layer of the map layer, map projection layer, and grid image drawing layer, and is used to manage the size, position, and display status of the layer; The map layer is used to provide a basic drawing framework and define the position of the projection reference point. Other drawing elements can be positioned by combining the projection reference point with the aircraft position. The map projection layer defines a projection system for calculating the projection positions of all aerial and ground image elements on the map; The grid image drawing layer is used to provide a map in a grid form, receive ARINC661 image data transmitted from the user application module through the ARINC661 network communication interface, and fill the ARINC661 image data into the corresponding grid in an array.

6. A simulated weather radar scanning method based on ARINC661, characterized by: It includes the following steps: Step 1: Use simulation software to build a flight simulation model in the flight simulation module to simulate the operation process of a real aircraft, and build an atmospheric model to calculate simulated flight data and simulated weather radar echo data for use in the user application module; Step 2: The user application module calculates ARINC 661 image data of the simulated scanned synthetic image based on the ARINC 661 standard, and outputs the data to the cockpit display system module through the ARINC 661 interface; Step 3: The cockpit display system module receives the ARINC661 image data from the user application module and displays the simulated weather radar image.

7. The ARINC661-based simulated weather radar scanning method according to claim 6, characterized in that: The user application module in step 2 includes a data analysis module, an image analysis module, a data storage module, an image storage module, a simulation scanning module, an image synthesis module, and an ARINC661 interface conversion module; the simulation scanning module simulates a radar sector scanning mode and transmits the simulation results to the image synthesis module; the user application module uses an ARINC661-based radar echo display to simulate dynamic sector scanning and calculates ARINC661 image data at each moment in real time.

8. The ARINC661-based simulated weather radar scanning method according to claim 7, characterized in that: The specific process in step 2 is as follows: First, the data parsing module parses the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores the parsed data in the data storage module; the image parsing module parses the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores the real-time image data in the image storage module; Secondly, the simulation scanning module reads data from the data storage module and the graphic storage module, simulates the radar sector scanning mode, and transmits the simulation results to the image synthesis module; Then, the image synthesis module reads data from the data storage module and the image storage module, synthesizes the data read from the image storage module according to the simulation result of the simulation scanning module, and transmits the synthesized image to the ARINC661 interface conversion module; Finally, the ARINC661 interface conversion module converts the synthesized image data into data that conforms to the ARINC661 format and transmits it to the cockpit display system module through the ARINC661 network communication interface.

9. The ARINC661-based simulated weather radar scanning method according to claim 8, characterized in that: The specific process of the simulation scanning module simulating the radar sector scanning mode in step 2 and transmitting the simulation results to the image synthesis module is as follows: First, define the scanning period T; Secondly, each scanning cycle T is divided into M phase and N phase; Then, in the M phase of each scanning cycle T, a forward scan is performed, and the scan line is scanned from 0° to 180°; in the N phase of each scanning cycle T, a reverse scan is performed, and the scan line is scanned from 180° to 0°; according to the cycle and phase corresponding to each moment, a virtual scan line is calculated, and the area of ​​the scanned image that needs to be updated is determined through the scan line, and the calculation result is transmitted to the image synthesis module.

10. The ARINC661-based simulated weather radar scanning method according to claim 9, characterized in that: The cockpit display system module in step three includes a base layer, a map layer, a map projection layer, and a grid image drawing layer; the base layer is the base layer of the map layer, the map projection layer, and the grid image drawing layer, and manages the size, position, and display status of the entire layer; the map layer provides a basic drawing framework, defines the position of the projection reference point, and other drawing elements can be located by combining the projection reference point with the aircraft position; the map projection layer defines a projection system, calculates the projection position of all air and ground image elements on the map; the grid image drawing layer provides a grid-form map, receives ARINC661 image data transmitted from the user application module through the ARINC661 network communication interface, fills the ARINC661 image data into the corresponding grid according to the array, and finally displays the simulated weather radar scanning composite image on the grid image drawing layer.

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