Simulated meteorological radar scanning system based on ARINC661 and scanning method thereof

Abstract

The invention provides a simulated meteorological radar scanning system based on ARINC661 and a scanning method thereof. The simulated meteorological radar scanning system comprises a flight simulation module, a user application program module and a cockpit display system module. The flight simulation module, the user application program module and the cockpit display system module carry out data interaction through the Ethernet; the scanning method of the system comprises the following steps: step 1, the flight simulation model module calculates simulated flight data and simulated meteorological radar echo data; step 2, the user application program module calculates ARINC661 image data; step 3, the cockpit display system module displays the simulated meteorological radar image; the problem that a traditional method depends on a meteorological radar simulator is solved, and the research and development cost is reduced; according to the method, the ARINC661 standard is met, an ARINC661 control is used, software and processes consistent with those of a real machine are maintained to be developed, the airworthiness certification standard is met, and the development cost is saved.

Description

Technical Field

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

[0002] Currently, there are mainly two implementation methods for analog airborne weather radar systems. The first is to rely on a radar simulation simulator to generate weather radar scanning echo images. It is necessary to simulate and calculate the radar beam scanning range in real time by simulation software, partially refresh the output echo images, and the display software parses and displays the images frame by frame. The second is that the radar simulation software only generates real-time weather radar echo images, and the display software completes the display effect of analog scanning refresh.

[0003] The main problems existing in the current analog airborne weather radar systems and their scanning methods in terms of analog scanning effects include the following aspects: (1) The first method relies on a radar simulation simulator to generate weather radar scanning echo images, which has high requirements for the performance of the simulation software. It is necessary to calculate the relative positions between the aircraft flight trajectory model and the weather model, the radar beam range, and generate echo images in real time. Usually, a separate radar simulation simulator hardware is required, resulting in a high implementation cost. (2) In the second method, the radar simulation software only generates real-time weather radar echo images, and the display software completes the display effect of analog scanning refresh. Although it does not require radar simulation simulator hardware and only needs a software-implemented simulation model to output the relative positions between the aircraft and the weather echoes, the scanning effect is achieved through dual-channel image caching and image synthesis techniques in the display software. However, the existing implementation methods are mainly based on GDI and image processing software under the Windows operating system, which does not conform to the ARINC611 specification.

[0004] Therefore, it is necessary to provide an ARINC661-based analog weather radar scanning system and a scanning method for aviation, which can solve the dependence on weather radar simulators in traditional methods, reduce the R & D cost; at the same time, it also conforms to the ARINC661 specification and is completely implemented using A661 controls to maintain the same development software and process as the real aircraft, so as to meet standards such as airworthiness certification and save development costs. Summary of the Invention

[0005] To solve the problems in the prior art, the present invention provides an ARINC661-based simulated weather radar scanning system and its scanning method, which can solve the dependence on weather radar simulators in traditional methods, reduce the R & D cost; at the same time, it also complies with the ARINC661 specification and can be fully implemented using ARINC661 controls to maintain the same development software and process as the real aircraft, so as to meet standards such as airworthiness certification and save development costs.

[0006] To achieve the above object, the present invention provides the following technical solution: An ARINC661-based simulated weather radar scanning system, including: A flight simulation module, which is used to establish a flight simulation model by using simulation software, simulate the operation process of a real aircraft, and establish an atmosphere model to calculate simulated flight data and simulated weather radar echo data for use by the user application program module; A user application program module, which 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 composite image, and output it to the cockpit display system module through the ARINC661 interface; A cockpit display system module, which is used to receive the ARINC661 image data of the user application program module and display the simulated weather radar image; Data interaction is carried out among the above flight simulation module, user application program module, and cockpit display system module by using Ethernet.

[0007] In a preferred technical solution, the user application program module is used to implement a simulated dynamic sector scan of radar echo display based on ARINC661 and calculate the ARINC661 image data at each moment in real time.

[0008] In a preferred technical solution, the user application program module includes a data parsing module, an image parsing 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 save the parsed data in the data storage module; The data storage module is used to store the parsed real-time data for calling 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 calling 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, 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 conforming to the ARINC661 format and transmit it to the cockpit display system module through the ARINC661 network communication interface.

[0009] In a preferred technical solution, 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 period T, and divide each scanning period T into M stages and N stages; in the M stage, forward scanning is performed, and the scanning line scans from 0° to 180°; in the N stage, reverse scanning is performed, and the scanning line scans from 180° to 0°; according to the corresponding period and stage of each moment, calculate a virtual scanning line, determine the area of the scanning image that needs to be updated through the scanning line, and transmit the calculation results to the image synthesis module.

[0010] In a preferred technical solution, the cockpit display system module sequentially includes a base layer, a map layer, a map projection layer, and a grid image drawing layer, and each layer is a parent layer that accommodates the next layer in sequence; The base layer is the base layer of the map layer, the map projection layer, and the grid image drawing layer, and is used to manage the size, position, and display state of the layers; The map layer is used to provide a basic drawing framework, define the position of the projection reference point, and other drawing elements can be located by combining the aircraft position with the projection reference point; The map projection layer defines a set of projection systems and is used to calculate the projection positions of all air and ground image elements on the map; The grid image drawing layer is used to provide a map in the form of a grid, receive the ARINC661 image data transmitted by the user application module through the ARINC661 network communication interface, and fill the ARINC661 image data into the corresponding grid according to the array.

[0011] Another object of the present invention is to provide a method for simulating a meteorological radar scan based on ARINC661 for an ARINC661-based simulated meteorological radar scan system, which includes the following steps: Step 1: In the flight simulation module, use simulation software to establish a flight simulation model to simulate the operation process of a real aircraft, and establish an atmospheric model to calculate simulated flight data and simulated meteorological radar echo data for use by the user application module; Step 2: The user application module calculates the ARINC661 image data of the synthetic image of the simulated scan based on the ARINC661 standard and outputs it to the cockpit display system module through the ARINC661 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.

[0012] In a preferred technical solution, the user application module in Step 2 includes a data parsing module, an image parsing module, a data storage module, an image storage module, a simulation scan module, an image synthesis module, and an ARINC661 interface conversion module; the simulation scan module simulates the radar fan scan mode and transmits the simulation result to the image synthesis module; the user application module uses the ARINC661-based radar echo display to simulate a dynamic fan scan and calculates the ARINC661 image data at each moment in real time.

[0013] In a preferred technical solution, the specific process in Step 2 is as follows: First, the data parsing module parses the real-time simulation flight data and the simulated weather radar echo data obtained from the flight simulation module and saves the parsed data in the data storage module; the image parsing module parses the real-time image data from the real-time simulation flight data and the simulated weather radar echo data obtained from the flight simulation module and saves it in the image storage module; Second, the simulation scan module reads data from the data storage module and the graphic storage module, simulates the radar fan scan mode, and transmits the simulation result 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 scan 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 conforming to the ARINC661 format and transmits it to the cockpit display system module through the ARINC661 network communication interface.

[0014] In a preferred technical solution, the specific process in which the simulation scan module in Step 2 simulates the radar fan scan mode and transmits the simulation result to the image synthesis module is as follows: First, define the scan period T; Second, divide each scan period T into M stages and N stages; Then, during the M phase of each scanning period T, a forward scan is performed, and the scanning line scans from 0° to 180°; during the N phase of each scanning period T, a reverse scan is performed, and the scanning line scans from 180° to 0°. According to the corresponding period and phase at 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, and the calculation result is transmitted to the image synthesis module.

[0015] In a preferred technical solution, the cockpit display system module in step three includes a basic layer, a map layer, a map projection layer, and a grid image drawing layer. The basic 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 state 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 aircraft position with the projection reference point. The map projection layer defines a set of projection systems and calculates the projection positions of all air and ground image elements on the map. The grid image drawing layer provides a map in the form of a grid, 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 scan synthesis image on the grid image drawing layer.

[0016] Compared with the prior art, the beneficial effects of an ARINC661-based simulated weather radar scanning system and its scanning method of the present invention are as follows: 1. The present invention solves the dependence on the weather radar simulator in the traditional method and reduces the R & D cost.

[0017] 2. The present invention complies with the ARINC661 specification and is completely implemented using ARINC661 controls, which can maintain the same development software and process as the real machine to meet standards such as airworthiness certification and save development costs.

[0018] 3. The function of the weather radar simulator is split. The simulated scanning algorithm is placed in the user application implemented 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, and the same development software and development process as the real machine are used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the software architecture of an ARINC661-based simulated weather radar scanning system of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The relevant terms in the present invention are described as follows: Cockpit Display System (CDS): Cockpit Display System; User Application (UA): User Application; A661_Layer: Base Layer; A661_Map: Map Layer; A661_Map_Source: Map Projection Layer; A661_MapGrid: Grid Image Drawing Layer; ARINC661: Cockpit Display and Control System and User System Interface Standard.

[0021] Refer to Figure 1 To further illustrate an analog meteorological radar scanning system architecture and its scanning method based on ARINC661 of the present invention.

[0022] As Figure 1 Shown: An analog meteorological radar scanning system based on ARINC661, comprising: A flight simulation module, used to establish a flight simulation model by using simulation software, simulate the operation process of a real aircraft, and establish an atmosphere model to calculate simulated flight data and simulated meteorological radar echo data for use by the user application module; A user application module, used to implement the logic of the analog meteorological radar scanning system based on the ARINC661 standard, calculate the ARINC661 image data of the synthesized image of the analog scan, and output it to the cockpit display system module through the ARINC661 interface; this user application module implements the simulation of dynamic sector scanning of radar echo display based on the ARINC661 standard and calculates the ARINC661 image data at each moment in real time. This user application module includes a data parsing module, an image parsing module, a data storage module, an image storage module, an analog scan 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 meteorological 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 the simulation scanning module and the image synthesis module to call; the image parsing module is used to parse the real-time image data from the simulated meteorological radar echo data and save it in the image storage module; the image storage module stores the parsed real-time image data for the simulation scanning module and the image synthesis module to call; the simulation scanning module is used to simulate the radar fan scanning mode and transmit the simulation result 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 conforming to the ARINC661 format and transmit it to the cockpit display system module through the ARINC661 network communication interface.

[0023] Among them, the specific process of the simulation scanning module simulating the radar fan scanning mode and transmitting the simulation result to the image synthesis module is as follows: Define the scanning period T, and divide each scanning period T into M stages and N stages; in the M stage, perform forward scanning, and the scanning line scans from 0° to 180°; in the N stage, perform reverse scanning, and the scanning line scans from 180° to 0°; calculate a virtual scanning line according to the corresponding period and stage of each moment, determine the area of the scanning image that needs to be updated through the scanning line, and transmit the calculation result to the image synthesis module.

[0024] The cockpit display system module is used to receive the ARINC661 image data of the user application module and display the simulated meteorological radar image; the cockpit display system module sequentially includes a base layer, a map layer, a map projection layer, and a grid image drawing layer, and each layer is a parent layer that accommodates the next layer in turn; the base layer is the base layer of the map layer, the map projection layer, and the grid image drawing layer, and is used to manage the size, position, and display state of the layers; the map layer is used to provide a basic drawing framework, define the position of the projection reference point, and other drawing elements can be located by combining the aircraft position with the projection reference point; the map projection layer defines a set of projection systems and is used to calculate the projection positions of all air and ground image elements on the map; the grid image drawing layer is used to provide a map in the form of a grid, receive the ARINC661 image data transmitted by the user application module through the ARINC661 network communication interface, and fill the ARINC661 image data into the corresponding grid according to the array.

[0025] Data interaction is carried out among the above-mentioned flight simulation module, user application program module, and cockpit display system module via Ethernet.

[0026] The working process of an ARINC661-based simulated weather radar scanning system in this embodiment is as follows, including the following steps: Step 1: In the flight simulation module, use simulation software to establish a flight simulation model to simulate the operation process of a real aircraft, and establish an atmosphere model to calculate simulated flight data and simulated weather radar echo data for use by the user application program module; Step 2: The user application program module calculates the ARINC661 image data of the simulated scanned composite image based on the ARINC661 standard and outputs it to the cockpit display system module through the ARINC661 interface; among them, the user application program 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; the simulated scanning module simulates the radar fan scanning mode and transmits the simulation result to the image synthesis module; the user application program module uses the radar echo display based on ARINC661 to simulate a dynamic fan scan and calculates the ARINC661 image data at each moment in real time.

[0027] The specific process 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 image data from the real-time simulated flight data and simulated weather radar echo data obtained from the flight simulation module and stores it in the image storage module; Secondly, the simulated scanning module reads data from the data storage module and the graphic storage module, simulates the radar fan scanning mode, and transmits the simulation result 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 simulated 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 conforming to the ARINC661 format and transmits it to the cockpit display system module through the ARINC661 network communication interface.

[0028] The specific process of the above-mentioned simulated scanning module simulating the radar fan scanning mode and transmitting the simulation result to the image synthesis module is as follows: First, define the scanning period T; Secondly, each scanning period T is evenly divided into an M stage and an N stage; Then, a forward scan is performed in the M stage of each scanning period T, and the scanning line scans from 0° to 180°; a reverse scan is performed in the N stage of each scanning period T, and the scanning line scans from 180° to 0°. According to the corresponding period and stage at each moment, a virtual scanning line is calculated, and the area that needs to be updated in the scanned image is determined through the scanning line, and the calculation result is transmitted to the image synthesis module.

[0029] Step 3: The cockpit display system module receives the ARINC661 image data of the user application program module and displays the simulated weather radar image.

[0030] The specific division of labor and processing process is as follows: The basic layer is the basic layer of the map layer, the map projection layer, and the grid image drawing layer, managing the size, position, and display state 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 aircraft position with the projection reference point; the map projection layer defines a set of projection systems and calculates the projection positions of all air and ground image elements on the map; the grid image drawing layer provides a map in the form of a grid, receives the ARINC661 image data transmitted by the user application program module through the ARINC661 network communication interface, fills the ARINC661 image data into the corresponding grid in an array, and finally displays the simulated weather radar scan synthesis image on the grid image drawing layer.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. It should be noted that any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ARINC661-based analog weather radar scanning system, characterized in that: It includes: A flight simulation module, which is used to establish a flight simulation model by using simulation software, simulate the operation process of a real aircraft, and establish an atmosphere model to calculate simulated flight data and simulated weather radar echo data for use by the user application module; A user application module, which 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 synthetic image of the simulated scan, and output it to the cockpit display system module through the ARINC661 interface; A cockpit display system module, which is used to receive the ARINC661 image data of the user application module and display the simulated weather radar image; Data interaction is carried out between the above-mentioned flight simulation module, user application module, and cockpit display system module by using Ethernet.

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

3. The simulated meteorological radar scanning system based on ARINC661 according to claim 2, characterized in that: The user application module includes a data parsing module, an image parsing module, a data storage module, an image storage module, a simulation scan 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 save the parsed data in the data storage module; The data storage module is used to store the parsed real-time data for calling by the simulation scan 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 calling by the simulation scan module and the image synthesis module; The simulation scan module is used to simulate the radar sector scan mode and transmit the simulation result to the image synthesis module; The image synthesis module is used to read data from the data storage module and the image storage module, synthesize the data read from the image storage module according to the simulation result of the simulation scan 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 conforming 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 scan module simulating the radar sector scan mode and transmitting the simulation result to the image synthesis module is as follows: Define the scan period T, and divide each scan period T into M stages and N stages; in the M stage, a forward scan is performed, and the scan line scans from 0° to 180°; in the N stage, a reverse scan is performed, and the scan line scans from 180° to 0°; according to the corresponding period and stage of each moment, calculate a virtual scan line, determine the area of the scan image that needs to be updated through the scan line, and transmit the calculation result 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 successively includes a base layer, a map layer, a map projection layer, and a grid image drawing layer, and each layer is successively the parent layer that accommodates the next layer; The base layer is the basic 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 layers; The map layer is used to provide a basic drawing framework, define the position of the projection reference point, and locate other drawing elements by combining the aircraft position with the projection reference point; The map projection layer defines a set of projection systems and is used to calculate the projection positions of all airborne and ground image elements on the map; The grid image drawing layer is used to provide a map in the form of a grid, receive ARINC661 image data transmitted by the user application module through the ARINC661 network communication interface, and fill the ARINC661 image data into the corresponding grid according to the array.

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

7. A method for simulating weather radar scanning based on ARINC661 according to claim 6, characterized in that: The user application module in Step 2 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; the simulated scanning module simulates the radar fan scanning mode and transmits the simulation result to the image synthesis module; the user application module uses the radar echo display based on ARINC661 to simulate the dynamic fan scanning and calculates the ARINC661 image data at each moment in real time.

8. A method for simulating weather radar scanning based on ARINC661 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 meteorological radar echo data obtained from the flight simulation module and saves the parsed data in the data storage module; the image parsing module parses the real-time image data from the real-time simulated flight data and simulated meteorological radar echo data obtained from the flight simulation module and saves it in the image storage module; Secondly, the simulated scanning module reads data from the data storage module and the graphics storage module, simulates the radar fan scanning mode, and transmits the simulation result 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 simulated 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 conforming to the ARINC661 format and transmits it to the cockpit display system module through the ARINC661 network communication interface.

9. A method for simulating weather radar scanning based on ARINC661 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. A method for simulating weather radar scanning based on ARINC661 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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