CN106019241B - A kind of radar simulator single goal method for interception - Google Patents

Abstract

The invention discloses a radar simulator single target interception method, the specific steps are: S1, the radar simulator sends the target information to the display control subsystem; S2, the display control subsystem sends the intercept command and locks the locked target according to the target information Send the position information of the target to the radar simulator; S3, obtain the position information of the locked target; S4, obtain the range range of the multi-function display screen in the display control subsystem; S5, calculate the azimuth angle of the locked target; S6, calculate the locked target S7, calculate the distance of the locked target; S8, compare the azimuth and distance of the locked target with the azimuth and distance of the target searched by the radar simulator in order to determine the intercepted target; S9, calculate the intercepted target Attribute data is transmitted to the display control system. The beneficial effect of the invention is that the correctness of the single target interception control interface can be verified in the laboratory environment, the production cost is saved, and the development time is shortened.

Description

A Single Target Interception Method for Radar Simulator

technical field

The invention relates to the technical field of aircraft avionics system simulation, in particular to a radar simulator single target interception method.

Background technique

As an important equipment of an aircraft, radar is responsible for functions such as target detection, target tracking, and weather detection, and plays a key role in completing tasks.

During the ground test, usually only the processor of the radar participates in the test, the detection antenna does not enter the test environment, the target information cannot be sent to the control system, and the control between the control system and the radar equipment cannot be verified during multi-target or single target tracking. interface. During the ground test, the radar simulator needs to simulate the target information to verify the control interface of the radar target. Single target tracking and interception are important functions of the radar simulator. In order to intercept the target more accurately, precise algorithms and comparisons are required. Support control system control and realization of single target interception.

Contents of the invention

The purpose of the present invention is to provide a radar simulator single target interception method to solve or at least alleviate at least one problem in the background technology.

The technical solution adopted by the present invention is: provide a radar simulator single target interception method, including the following steps: S1, the radar simulator sends target information to the display control subsystem, and the target information includes the position information of the target; S2, the The display control subsystem sends an intercept command for the locked target and the position information of the locked target to the radar simulator according to the target information; S3, acquires the position information of the locked target, and the position information of the locked target includes horizontal Position coordinates and vertical position coordinates; S4, obtain the range range of the multi-function display screen in the display control subsystem; S5, according to the horizontal position coordinates of the locked target, the locked target relative to the display of the display control subsystem Calculate the azimuth angle of the locked target based on the maximum offset angle at the center of the screen and the screen pixel corresponding to the maximum offset angle; S6, calculate the azimuth radian of the locked target according to the azimuth angle of the locked target; S7, calculate the distance of the locked target according to the vertical position coordinates of the locked target, the initial offset in the vertical direction, the maximum pixel in the vertical direction and the range range of the multi-function display screen; S8, calculate the azimuth of the locked target and the distance are compared with the azimuth and distance of the target searched by the radar simulator in turn, if the absolute value of the error between the calculated azimuth of the locked target and the azimuth of the target searched by the radar simulator is less than the set azimuth error, and The distance between the locked target calculated by S and the target range error absolute value difference that is searched by the radar simulator is less than the set distance error, then it is considered that the target searched by the radar simulator is the intercepted target; S9, the attribute of the intercepted target The data is sent to the display control system.

Preferably, the method for calculating the azimuth angle of the locked target in the step S5 is: the horizontal position coordinate of the locked target × the maximum offset angle of the locked target relative to the center position of the screen of the display control subsystem / the screen pixel corresponding to the maximum offset angle .

Preferably, the method for calculating the locked target distance in the step S6 is: (vertical position of the cursor+initial offset in the vertical direction)/maximum pixel in the vertical direction×range range of the multi-function display screen.

Preferably, the set azimuth angle error in the step S8 should satisfy 3 radians ≤ set azimuth angle error ≤ 5 radians, and the set distance error should satisfy 3 km ≤ set distance error ≤ 5 km.

The beneficial effect of the present invention is: realize the simulation of single target interception through the method of radar simulator single target interception, can verify the correctness of single target interception control interface in laboratory environment, make the aircraft save production cost in the development stage, Shorten the development time and provide support for system troubleshooting during the flight test phase; it can be widely used in the interface verification of radar target tracking for avionics weapon systems.

Description of drawings

Fig. 1 is a flow chart of a radar simulator single target interception method according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

In describing the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the Means that a device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the invention.

The working principle of the present invention is: during the ground test, the radar simulator sends the simulated target data to the display control subsystem, and the display control subsystem displays the data on the screen of the multi-function display. The pilot uses the cursor to lock the single target according to the information on the screen, and the display control subsystem sends the cursor information of the target sent by the pilot to the radar simulator, and sends a single target intercept command. After receiving the intercept command, the radar simulator converts the information of the cursor on the multi-function display into the azimuth and distance information of the target through a certain algorithm, and compares it with the detected target information data. If the azimuth and If the distance comparisons are all within a certain error range, the selected target is considered to be the compared target. The radar sends the target information to the display control subsystem, and the display control subsystem sets the intercept flag for the target information and displays it on the multi-function display. At the same time, it sends the radar to enter the single-target tracking mode command, and the radar’s working mode enters the single-target tracking mode. Successfully intercepted. This method supports the verification of the control interface between the control system and the radar, and is especially beneficial to the verification of the interface in the single-target tracking mode.

In order to illustrate the implementation process of the method of the present invention in more detail, the following is an example of 20 targets searched by radar for detailed description:

As shown in FIG. 1 , a radar simulator single-target interception method includes the following steps: S1, the radar simulator sends target information to a display control subsystem, and the target information includes target position information.

In this embodiment, the radar simulator sends the position information of 20 targets to the display control subsystem.

S2, the display control subsystem sends an interception command for the locked target and the position information of the locked target to the radar simulator according to the target information.

In this embodiment, after the pilot uses the cursor to select one of the 20 targets as an intercept target, the display control subsystem sends an intercept command for the locked target and the position information of the locked target to the radar simulator according to the target information.

S3. Acquiring position information of the locked target, where the position information of the locked target includes horizontal position coordinates and vertical position coordinates.

In this embodiment, after receiving the position information of the locked target, the radar simulator stores the position information in the temporary variables horizontal position and vertical position, where the horizontal position coordinate is 78 and the vertical position coordinate is 125.

S4. Obtain the measurement range of the multi-function display screen in the display control subsystem.

The radar simulator determines the range range of the multi-function display screen according to the working mode before entering the interception, and stores the range value in the variable Range. In this embodiment, the range of the multi-function display screen is 10KM.

S5. Calculate the orientation of the locked target according to the horizontal position coordinates of the locked target, the maximum offset angle of the locked target relative to the central position of the display screen of the display control subsystem, and the screen pixel corresponding to the maximum offset angle corner angle.

In this embodiment, the specific calculation method is:

The horizontal position coordinates of the locked target × the maximum offset angle of the locked target relative to the center position of the screen of the display control subsystem/the screen pixel corresponding to the maximum offset angle. Among them, the maximum offset angle of the locked target relative to the center position of the display control subsystem screen, and the screen pixels corresponding to the maximum offset angle are obtained by the radar simulator. In this embodiment, the locked target is relative to the central position of the display control subsystem screen. The maximum offset angle is 60 degrees, and the screen pixels corresponding to the maximum offset angle are 186.

Lock target azimuth angle=78×60/186=25.16 degrees.

S6. Calculate the azimuth radian of the locked target according to the azimuth angle of the locked target.

In this embodiment, the azimuth radian of the locked target=25.16×3.142/180=0.439 radian.

S7. Calculate the distance of the locked target according to the vertical position coordinates of the locked target, the initial offset in the vertical direction, the maximum pixel in the vertical direction, and the range range of the multi-function display screen.

In this embodiment, the specific calculation method is:

(vertical position of the cursor + initial offset in the vertical direction)/maximum pixel in the vertical direction×range of the multi-function display screen. Wherein, the initial offset in the vertical direction and the maximum pixel in the vertical direction are acquired by the radar simulator. In this embodiment, the initial offset in the vertical direction is 192, and the maximum pixel in the vertical direction is 384.

The distance of locking the target=(125+192)/384×10=8.2KM.

S8, comparing the azimuth and distance of the locked target with the azimuth and distance of the target searched by the radar simulator in turn, if there is an error between the calculated azimuth of the locked target and the target azimuth searched by the radar simulator is less than the set azimuth angle error, and the distance between the locked target calculated by S and the target distance searched by the radar simulator is less than the set distance error, then the target searched by the radar simulator is considered to be the intercepted target.

In this embodiment, the azimuth (0.439 radians) and distance (8.2 km) of the target to be locked are compared with the azimuth and distance of the searched target in turn.

In this embodiment, the set azimuth error in step S8 should satisfy 3 radians ≤ set azimuth error ≤ 5 radians, and the set distance error should satisfy 3 km ≤ set distance error ≤ 5 km.

In this embodiment, the azimuth angle of one of the targets searched by the radar is 0.502 radians, and the distance is 9.3km.

According to |0.439-0.502|=0.063 radians, less than the azimuth error;

|8.2-9.3|＝1.1km, less than the distance error,

The target is considered to be a locked target.

S9. Transmitting the attribute data of the intercepted target to the display control system.

Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and these The modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (4)

1. a radar simulator single target interception method, is characterized in that, comprises the following steps: S1, the radar simulator sends target information to the display control subsystem, and the target information includes the position information of the target; S2, the display control subsystem sends an intercept command for the locked target and position information of the locked target to the radar simulator according to the target information; S3. Acquiring position information of the locked target, where the position information of the locked target includes horizontal position coordinates and vertical position coordinates; S4, acquiring the range range of the multi-function display screen in the display control subsystem; S5. Calculate the orientation of the locked target according to the horizontal position coordinates of the locked target, the maximum offset angle of the locked target relative to the central position of the display screen of the display control subsystem, and the screen pixel corresponding to the maximum offset angle angle angle; S6, calculating the azimuth radian of the locked target according to the azimuth angle of the locked target; S7, calculating the distance of the locked target according to the vertical position coordinates of the locked target, the initial offset in the vertical direction, the maximum pixel in the vertical direction, and the range range of the multi-function display screen; S8, comparing the azimuth and distance of the locked target with the azimuth and distance of the target searched by the radar simulator in turn, if there is an error between the calculated azimuth of the locked target and the target azimuth searched by the radar simulator If the absolute value is less than the set azimuth error, and the absolute value of the distance error between the locked target calculated by S and the target distance searched by the radar simulator is less than the set distance error, then the target searched by the radar simulator is considered to be an intercepted target; S9. Transmitting the attribute data of the intercepted target to the display control system. 2. The radar simulator single target interception method as claimed in claim 1, characterized in that: the method for calculating the azimuth angle of the locked target in the step S5 is: the horizontal position coordinates of the locked target × the locked target relative to the display control points The maximum offset angle of the center position of the system screen/the screen pixel corresponding to the maximum offset angle. 3. radar simulator single target interception method as claimed in claim 1 is characterized in that: the method for calculating locked target distance in the described step S6 is, (vertical position+vertical initial offset of vernier)/vertical direction The maximum pixel × the range of the multi-function display screen. 4. radar simulator single target interception method as claimed in claim 1, is characterized in that: described setting azimuth error in described step S8 should satisfy, 3 radians ≤ set azimuth angle error ≤ 5 radians, The set distance error should satisfy, 3km≤setting distance error≤5km.