阅读说明：本技术 航炮空间姿态校准装置及校准方法 (Device and method for calibrating aerial gun space attitude ) 是由 孙林 饶永红 张克 于 2021-09-17 设计创作，主要内容包括：本发明提供一种航炮空间姿态校准装置,包括：相交校准靶、电子校炮镜、倾角传感器、上位机和显示器；所述相交校准靶上设有两个不同位置的校准目标,所述电子校炮镜的一端设有准直物镜,另一端设有插轴；通过插轴用于将电子校炮镜插入炮口,并保持电子校炮镜的光轴与炮口轴线重合；电子校炮镜中设有图像传感器,所述图像传感器连接上位机,所述上位机连接显示器；所述倾角传感器安装在电子校炮镜上,用于检测电子校炮镜的倾角。本发明还提供了一种航炮空间姿态校准方法。本发明校炮过程无需对机身进行校正,不受环境的影响,大大简化了操作流程。(The invention provides a device for calibrating the space attitude of an aerogun, which comprises: the device comprises an intersecting calibration target, an electronic gun calibration mirror, a tilt angle sensor, an upper computer and a display; the intersected calibration target is provided with two calibration targets at different positions, one end of the electronic gun calibration lens is provided with a collimating objective lens, and the other end of the electronic gun calibration lens is provided with an inserting shaft; the electronic gun checking mirror is inserted into the muzzle through the insertion shaft, and the optical axis of the electronic gun checking mirror is kept to be coincident with the axis of the muzzle; an image sensor is arranged in the electronic gun checking mirror and connected with an upper computer, and the upper computer is connected with a display; the inclination angle sensor is arranged on the electronic cannon correcting mirror and used for detecting the inclination angle of the electronic cannon correcting mirror. The invention also provides a method for calibrating the space attitude of the aerogun. The gun body is not required to be corrected in the gun correcting process, the gun body is not influenced by the environment, and the operation flow is greatly simplified.)

1. The utility model provides a flight gun space gesture calibrating device which characterized in that includes: the device comprises an intersecting calibration target, an electronic gun calibration mirror, a tilt angle sensor, an upper computer and a display;

the intersected calibration target is provided with two calibration targets at different positions, one end of the electronic gun calibration lens is provided with a collimating objective lens, and the other end of the electronic gun calibration lens is provided with an inserting shaft; the electronic gun checking mirror is inserted into the muzzle through the insertion shaft, and the optical axis of the electronic gun checking mirror is kept to be coincident with the axis of the muzzle; an image sensor is arranged in the electronic gun checking mirror and connected with an upper computer, and the upper computer is connected with a display; the inclination angle sensor is arranged on the electronic cannon correcting mirror and used for detecting the inclination angle of the electronic cannon correcting mirror.

2. The aerogun spatial attitude calibration apparatus of claim 1,

the calibration targets on the intersecting calibration targets are cross-hatch targets.

3. The aerogun spatial attitude calibration apparatus of claim 1,

the tilt sensor adopts an MEMS tilt sensor.

4. An aircraft gun space attitude calibration method using the aircraft gun space attitude calibration device according to any one of claims 1 to 3, characterized by comprising:

step S1, determining the full target distance D and the actual target distance D of the aerogun₀；

Step S2, calculating the vertical distance H and the horizontal distance L of the centers of two calibration targets on the intersected calibration target;

according to the similar triangle theorem, the following results are obtained:

wherein H₀The vertical distance between the center of the muzzle and a sighting device on the aerial gun is taken as the vertical distance; h is the vertical distance between the centers of two calibration targets on the intersected calibration target;

wherein L is₀The horizontal distance between the center of the muzzle and a sighting device on the aerial gun is taken as the horizontal distance; l is the horizontal distance between the centers of the two calibration targets on the intersected calibration target;

step S3, two calibration targets are arranged on the intersected calibration targets according to the vertical distance H and the horizontal distance L of the centers of the two calibration targets;

step S4, inserting the electronic gun checking mirror into the muzzle of the aerial gun, and keeping the optical axis of the electronic gun checking mirror coincident with the axis of the muzzle;

step S5, adjusting the gun body of the aerogun to enable the inclination angle sensor on the electronic gun checking mirror to be in a horizontal state, namely the gun body is in a horizontal state;

step S6, placing the intersection calibration target at an actual target distance D from the muzzle₀And adjusting the intersecting calibration target along the vertical direction, adjusting the gun body along the horizontal direction to enable the electronic gun calibration lens to align with a calibration target center B on the intersecting calibration target, then adjusting the sighting device on the aerial gun to enable the center of the sighting device to coincide with another calibration target center A on the intersecting calibration target, and recording the relative angle between the sighting device and the gun body at the moment as the reference angle of the sighting device.

Technical Field

The invention relates to the technical field of aircraft gun calibration, in particular to an aircraft gun space attitude calibration device and a calibration method.

Background

In a complex combat environment, an aerogun is an important means for the air-ground attack of a modern warplane, the shooting precision of the aerogun directly influences the battlefield viability of the warplane and the success or failure of a local war, and therefore, for the aerogun, the target calibration is important work which is frequent and directly related to the guarantee of airborne weapons, the hit probability and the task efficiency of the whole weapon system.

The traditional aerogun calibration method is to jack up an airplane by using a jack and a bracket, wherein a longitudinal axis and a transverse axis of the airplane are in horizontal positions, a target plate is arranged 50m in front of a datum seat of the airplane, the horizontal line of the target plate is parallel to the transverse axis of the airplane, a vertical line on the target plate is coincided with a plumb line, the center of the target plate is aligned with a target calibration datum, and then target calibration is carried out. The method has strict requirements on the calibration environment and the space attitude of the fuselage, and has complex operation and low precision.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the device and the method for calibrating the space attitude of the aerial gun, the gun body does not need to be calibrated in the gun calibrating process, the gun body is not influenced by the environment, the operation process is greatly simplified, and the calibration precision and the calibration efficiency are improved.

In order to achieve the technical purpose, the embodiment of the invention adopts the technical scheme that:

in a first aspect, an embodiment of the present invention provides an aircraft gun spatial attitude calibration apparatus, including: the device comprises an intersecting calibration target, an electronic gun calibration mirror, a tilt angle sensor, an upper computer and a display;

the intersected calibration target is provided with two calibration targets at different positions, one end of the electronic gun calibration lens is provided with a collimating objective lens, and the other end of the electronic gun calibration lens is provided with an inserting shaft; the electronic gun checking mirror is inserted into the muzzle through the insertion shaft, and the optical axis of the electronic gun checking mirror is kept to be coincident with the axis of the muzzle; an image sensor is arranged in the electronic gun checking mirror and connected with an upper computer, and the upper computer is connected with a display; the inclination angle sensor is arranged on the electronic cannon correcting mirror and used for detecting the inclination angle of the electronic cannon correcting mirror.

Further, the calibration targets on the intersecting calibration targets are cross-hatch targets.

Further, the tilt sensor is a MEMS tilt sensor.

In a second aspect, an embodiment of the present invention provides a method for calibrating an aircraft gun spatial attitude, where the method for calibrating an aircraft gun spatial attitude is used, and includes:

step S1, determining the total target distance of the aerogunDistance D and actual target distance D₀；

Step S2, calculating the vertical distance H and the horizontal distance L of the centers of two calibration targets on the intersected calibration target;

according to the similar triangle theorem, the following results are obtained:

wherein H₀The vertical distance between the center of the muzzle and a sighting device on the aerial gun is taken as the vertical distance; h is the vertical distance between the centers of two calibration targets on the intersected calibration target;

wherein L is₀The horizontal distance between the center of the muzzle and a sighting device on the aerial gun is taken as the horizontal distance; l is the horizontal distance between the centers of the two calibration targets on the intersected calibration target;

step S3, two calibration targets are arranged on the intersected calibration targets according to the vertical distance H and the horizontal distance L of the centers of the two calibration targets;

step S4, inserting the electronic gun checking mirror into the muzzle of the aerial gun, and keeping the optical axis of the electronic gun checking mirror coincident with the axis of the muzzle;

step S5, adjusting the gun body of the aerogun to enable the inclination angle sensor on the electronic gun checking mirror to be in a horizontal state, namely the gun body is in a horizontal state;

step S6, placing the intersection calibration target at an actual target distance D from the muzzle₀And adjusting the intersecting calibration target along the vertical direction, adjusting the gun body along the horizontal direction to enable the electronic gun calibration lens to align with a calibration target center B on the intersecting calibration target, then adjusting the sighting device on the aerial gun to enable the center of the sighting device to coincide with another calibration target center A on the intersecting calibration target, and recording the relative angle between the sighting device and the gun body at the moment as the reference angle of the sighting device.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: the defect that the fuselage is corrected before the traditional gun correction is overcome, the method is not only suitable for calibrating the aircraft gun in a target correcting field, but also suitable for correcting the target of the aircraft at any time after the aircraft is used for a period of time, and has low requirement on the environment.

Drawings

FIG. 1 is a schematic diagram of a calibration apparatus according to an embodiment of the invention.

FIG. 2 is a schematic view of an intersecting calibration target in an embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating the calculation of the calibration target position on the intersecting calibration targets in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the device for calibrating the space attitude of an aerogun provided by the embodiment of the invention comprises an intersecting calibration target 1, an electronic gun calibration mirror 2, a tilt sensor 3, an upper computer 4 and a display 5;

the intersected calibration target 1 is provided with two calibration targets at different positions, the calibration targets are preferably crossed cross targets, and the centers of the two calibration targets are shown as A and B in FIG. 2; one end of the electronic gun-checking mirror 2 is provided with a collimating objective 6, and the other end is provided with an inserting shaft 8; the electronic gun-checking mirror 2 can be inserted into the muzzle through the insertion shaft 8, and the optical axis of the electronic gun-checking mirror 2 is kept to be coincident with the axis of the muzzle; an image sensor 7 is arranged in the electronic gun checking mirror 2, the image sensor 7 is connected with an upper computer 4, and the upper computer 4 is connected with a display 5; the inclination angle sensor 3 is arranged on the electronic cannon correcting mirror 2 and is used for detecting the inclination angle of the electronic cannon correcting mirror 2; the tilt sensor 3 is preferably a MEMS tilt sensor;

the inserted shaft 8 adopts a push-pull clearance compensation expansion shaft structure, realizes gapless stable matching, and meets the requirement of reliable positioning precision;

the embodiment of the invention provides a method for calibrating the space attitude of an aerogun, which comprises the following steps:

step S1, determining the full-range target-distance of the aerogunD and the actual target distance D₀；

For a certain model of aerogun, the full-range target-to-target distance D can be determined according to the performance requirement, for example, the full-range target-to-target distance D is 1200 m; then, according to the convenience of actual target comparison, the actual target comparison distance D is determined₀Actual target distance D₀Less than full target distance D, e.g. actual target distance D₀Is 400 m;

step S2, calculating the vertical distance H and the horizontal distance L of the centers of two calibration targets on the intersected calibration target;

as shown in fig. 3, if the electronic gun-checking mirror is inserted into the muzzle of the aerial gun, the optical axis of the sighting device of the aerial gun and the optical axis of the electronic gun-checking mirror intersect at the end of the full-range target-distance D;

according to the similar triangle theorem, the following results are obtained:

wherein H₀The vertical distance between the center of the muzzle and a sighting device on the aerial gun is taken as the vertical distance; h is the vertical distance between the centers of two calibration targets on the intersected calibration target;

wherein L is₀The horizontal distance between the center of the muzzle and a sighting device on the aerial gun is taken as the horizontal distance; l is the horizontal distance between the centers of the two calibration targets on the intersected calibration target;

step S3, two calibration targets are arranged on the intersected calibration targets according to the vertical distance H and the horizontal distance L of the centers of the two calibration targets;

the calibration target is preferably set as a cross-hair target;

step S4, inserting the electronic gun checking mirror into the muzzle of the aerial gun, and keeping the optical axis of the electronic gun checking mirror coincident with the axis of the muzzle;

step S5, adjusting the gun body of the aerogun to enable the inclination angle sensor on the electronic gun checking mirror to be in a horizontal state, namely the gun body is in a horizontal state;

step S6, placing the intersection calibration target at an actual target distance D from the muzzle₀Adjusting the intersecting calibration target along the vertical direction, adjusting the gun body along the horizontal direction to enable the electronic gun calibration lens to align with a calibration target center B on the intersecting calibration target, then adjusting the sighting device on the aerogun to enable the center of the sighting device to coincide with another calibration target center A on the intersecting calibration target, and recording the relative angle between the sighting device and the gun body at the moment as the reference angle of the sighting device;

in the step, whether the electronic gun checking mirror is aligned to a calibration target center B on the intersecting calibration target or not can be observed through the display 5; the relative angle between the sighting device and the gun body can be obtained by a fire control system of the aerial gun;

finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.