Day and night optoelectronic fire control solution for recoilless weapon system with automatic roll correction

Abstract

The present invention relates to the field of optoelectronic fire control technology, and more particularly to a method for calculating day and night optoelectronic fire control for a recoilless weapon system with automatic roll correction. Using roll correction software, the method comprises the following steps: Step 1: Calculating the horizontal component of the roll angle itself (imgabs0); Step 2: Calculating the horizontal component of the roll angle relative to the calibration of the gun (imgabs1); Step 3: Calculating the horizontal component of the roll angle outputted instantly by the attitude measurement module (imgabs2); Step 4: Calculating the horizontal component of the roll angle measured during system operation (imgabs3, i.e., imgabs4); Step 5: Calculating a roll angle calibration correction. The roll angle calibration correction refers to a correction to the horizontal calibration after trajectory calculation, i.e., the final horizontal calibration = the calculated horizontal calibration (imgabs5). This method, applied to a certain weapon platform, achieves high shooting accuracy requirements during live-fire shooting without controlling the weapon's vertical direction.

Description

Technical Field

[0001] The present invention relates to the field of optoelectronic fire control technology, and in particular to a day and night optoelectronic fire control solution method for a recoilless weapon system with automatic roll correction. Background Art

[0002] With the rapid development of science and technology, optoelectronic detection and precision strike have become major topics in modern military research. Western countries, led by the United States, have prioritized digitalization, intelligence, and precision in military equipment research since the early 19th century. They have also applied new fire control theories to military combat, accelerating the development of small arms combat systems. In the 20th century, my country made significant strides in the field of small arms fire control, including a certain type of sniper rifle day and night sight, a certain type of recoilless gun sighting device, and a certain type of ballistic solver. To improve precision strike capabilities, optoelectronic fire control systems typically perform calculations according to ballistic tables after obtaining environmental parameter variables and target-related information, and then set the sight line based on the results.

[0003] Day and night optoelectronic fire control usually consists of day and night search and tracking optical system, environmental parameter measurement module, own attitude measurement module, laser ranging module, trajectory calculation module, control system, eyepiece system, fuze setting interface, power supply and other parts. Among them, the day and night search and tracking optical system is generally composed of visible light imaging components and night vision imaging components (infrared imaging components or low-light imaging components), and can also be composed of the fusion of two imaging components; environmental parameter measurements generally include temperature, air pressure, crosswind and longitudinal wind measurements; self-attitude measurements include altitude, roll angle, heading angle and other measurements; the control system mainly realizes a series of operations such as product startup, brightness adjustment, ranging, table loading and menu, and completes all functional requirements of the fire control system; the laser ranging module is mainly used to measure the distance to the target; the ballistic solution module calculates the aiming line position according to environmental parameters, ammunition type, propellant temperature, attitude parameters, fuze parameters, etc. and completes automatic table loading; the eyepiece system is mainly used to magnify and observe the target and background; the fuze setting interface is mainly used to receive information related to the kill bomb or air burst bomb and transmit the solved time information to the fuze setting; the power supply is mainly to complete the power supply to the day and night optoelectronic system. The main components of day and night optoelectronic fire control are as follows Figure 1 As shown in the figure, the day / night electro-optical fire control system is fixed to the side of the recoilless weapon launcher. Soldiers use the day / night electro-optical fire control system to search for targets. Upon finding a target, the target tracking function is activated and the laser ranging function is initiated according to the interface prompts. At the same time, the environmental parameter sensor and attitude sensor transmit the inclination angle information, the heading angle increment information, and the target distance information to the trajectory calculation module. The trajectory calculation module combines all target information to calculate the target elevation angle, horizontal lateral deviation angle, target lead, and fuse arming time, and completes the line of sight and fuse arming.

[0004] In existing technology, day / night electro-optical fire control systems and recoilless weapon launchers are typically connected via a pickup truck. After connection, a cold calibration or parallelism correction is typically performed between the day / night electro-optical fire control and recoilless weapon launcher weapon lines. After correction, the day / night electro-optical fire control system calculates the trajectory using target parameters and automatically loads the sight. Soldiers then fire according to the loaded sight. However, the following technical drawbacks still exist:

[0005] 1) There is a difference in parallel between the day and night electro-optical fire control pickup and the weapon launcher, which results in a roll angle between the aiming line and the weapon line. After the angle is cold-calibrated, the horizontal deviation will appear when solving different distances. This deviation changes with the target distance (such as Figure 2 As shown in the figure, α is the roll angle and Δd is the horizontal offset of the installation).

[0006] 2) When shoulder-fired, recoilless weapon systems are prone to rolling. Because day / night electro-optical fire control systems lack reference lines, and the vertical reticle of the weapon system is difficult to align perpendicularly with the horizontal when shoulder-fired, horizontal roll occurs. This results in different horizontal offsets when calculating different ranges, and this offset varies with target distance.

[0007] 3) The optical axis parallelism correction datum has roll, resulting in horizontal deviation of the installation.

[0008] The above-mentioned horizontal deviation will directly lead to the offset of the installation orientation, causing the aiming point to shift and reducing shooting accuracy. Summary of the Invention

[0009] The purpose of the present invention is to provide a day and night optoelectronic fire control solution method for a recoilless weapon system with automatic roll correction. The method is applied to a certain type of weapon platform. During live-fire shooting, higher shooting accuracy requirements can be achieved without controlling the vertical direction of the weapon.

[0010] To solve the above technical problems, the present invention provides a method for calculating day and night electro-optical fire control of a recoilless weapon system with automatic roll correction, which adopts roll correction software for calculation and includes the following steps:

[0011] Step 1: Calculate the horizontal component of the roll angle itself The roll angle self-calibration mentioned herein refers to the roll between the optical axis of the electro-optical fire control aiming of the recoilless weapon and the pickup connection seat;

[0012] Step 2: Calculate the horizontal component of the gun roll angle relative to the calibration The relative calibration of the gun roll angle refers to the roll between the fire control system and the weapon system. When measuring, the weapon system installation line is perpendicular to the horizontal line, and the roll output by the attitude measurement module is the roll value between the fire control system and the weapon system, which is the relative calibration of the gun roll angle.

[0013] Step 3: Calculate the horizontal component of the roll angle output by the attitude measurement module

[0014] Step 4: Calculate the horizontal component of the roll angle measurement when the system is in use Right now

[0015] Step 5: Calculate the roll angle correction. The roll angle correction refers to the correction of the horizontal correction after the trajectory is solved, that is, the final horizontal correction = the horizontal correction after the calculation.

[0016] The present invention also provides a day and night electro-optical fire control sight for a recoilless weapon system with automatic roll correction. The day and night electro-optical fire control sight mainly consists of a day and night search system, an environmental parameter measurement module, a self-attitude measurement module, a laser ranging module, a trajectory calculation module, a control module, an eyepiece, a pickup connector and roll correction software.

[0017] Preferably, the environmental parameter measurement module includes temperature and air pressure sensors.

[0018] Preferably, the attitude measurement module adopts a spirit level, which is mainly used to measure the inclination angles of the two axes of the horizontal plane of the carrier to the ground plane as well as the horizontal angular velocity, azimuth angle and roll angle in real time.

[0019] Preferably, the spirit level adopts a platform-type installation design structure, and a top-pull adjustment mechanism is provided on the structure, which ensures that the roll angle of the product is within the range of -0.3° to +0.3° when connected to the pickup truck through a repair pad.

[0020] Preferably, the roll correction software mainly includes roll angle self-calibration, gun calibration roll angle relative calibration, roll angle measurement when the system is in use, and roll angle installation correction.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1) The weapon system is easy to operate and does not require adjustment to ensure it is vertical during firing.

[0023] 2) The weapon system has automatic roll correction and high shooting accuracy;

[0024] 3) The weapon system uses software calibration, and only plumb-fix calibration is required after long-term use, with a high level of intelligence;

[0025] 4) This method is applicable to sights with optoelectronic fire control and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a diagram of the day and night optoelectronic fire control structure in the prior art provided by the present invention.

[0027] Figure 2 A schematic diagram of the roll-on offset provided by the present invention.

[0028] Figure 3 This is a structural diagram of the design of the day and night optoelectronic fire control sight provided by the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0030] like Figure 3 As shown, the present invention provides a method for solving day and night electro-optical fire control of a recoilless weapon system with automatic roll correction, which adopts roll correction software for calculation and includes the following steps:

[0031] Step 1: Calculate the horizontal component of the roll angle itself The roll angle self-calibration refers to the roll between the optical axis of the electro-optical fire control aiming of the recoilless weapon and the pickup connection seat;

[0032] Step 2: Calculate the horizontal component of the gun roll angle relative to the calibration The relative calibration of the gun roll angle refers to the roll between the fire control system and the weapon system. When measuring, the weapon system installation line is perpendicular to the horizontal line. The roll output by the attitude measurement module is the roll value between the fire control system and the weapon system, which is the relative calibration of the gun roll angle.

[0033] Step 3: Calculate the horizontal component of the roll angle output by the attitude measurement module

[0034] Step 4: Calculate the horizontal component of the roll angle measurement when the system is in use Right now

[0035] Step 5: Calculate the roll angle correction. The roll angle correction refers to the correction of the horizontal correction after the trajectory is solved, that is, the final horizontal correction = the horizontal correction after the solution.

[0036] The present invention also provides a day and night electro-optical fire control sight for a recoilless weapon system with automatic roll correction. The day and night electro-optical fire control sight mainly consists of a day and night search system, an environmental parameter measurement module, a self-attitude measurement module, a laser ranging module, a trajectory calculation module, a control module, an eyepiece, a pickup connector and roll correction software.

[0037] The environmental parameter measurement module includes temperature and air pressure sensors.

[0038] The attitude measurement module uses a spirit level, which is mainly used to measure the inclination angles of the two axes of the horizontal plane of the carrier to the ground plane as well as the horizontal angular velocity, azimuth angle, and roll angle in real time.

[0039] The level adopts a platform-type installation design structure, and is equipped with a top-pull adjustment mechanism. A shim is used to ensure that the roll angle of the product is within the range of -0.3° to +0.3° when connected to the pickup truck.

[0040] The roll correction software mainly includes roll angle self-calibration, relative calibration of gun roll angle, roll angle measurement when the system is in use, and roll angle installation correction.

[0041] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A method for solving day and night electro-optical fire control for a recoilless weapon system with automatic roll correction, characterized in that: The calculation using roll correction software includes the following steps: Step 1: Calculate the horizontal component of the roll angle itself The self-calibration of the roll angle refers to the roll between the optical axis of the electro-optical fire control aiming of the recoilless weapon and the pickup connection seat; Step 2: Calculate the horizontal component of the gun roll angle relative to the calibration ; The relative calibration of the gun roll angle refers to the roll between the fire control system and the weapon system weapon line; when measuring, the weapon system installation line is perpendicular to the horizontal line, and the roll output by the attitude measurement module is the roll value between the fire control system and the weapon system, that is, the relative calibration of the gun roll angle; Step 3: Calculate the horizontal component of the roll angle output by the attitude measurement module ; Step 4: Calculate the horizontal component of the roll angle measurement when the system is in use ,Right now = ; Step 5: Calculate the roll angle correction. The roll angle correction refers to the correction of the horizontal correction after the trajectory is solved, that is, the final horizontal correction = the horizontal correction after the trajectory is solved + .

2. A day / night electro-optical fire control sight for a recoilless weapon system with automatic roll correction, using the method for solving day / night electro-optical fire control for a recoilless weapon system with automatic roll correction as claimed in claim 1, characterized in that: The day and night electro-optical fire control sight consists of a day and night search system, an environmental parameter measurement module, a self-attitude measurement module, a laser ranging module, a trajectory calculation module, a control module, an eyepiece, a pickup connector and roll correction software.

3. The day and night electro-optical fire control sight for a recoilless weapon system with automatic roll correction according to claim 2, characterized in that: The environmental parameter measurement module includes temperature and air pressure sensors.

4. The day and night electro-optical fire control sight for a recoilless weapon system with automatic roll correction according to claim 2, characterized in that: The attitude measurement module uses a spirit level to measure the inclination angles of the two axial directions of the horizontal plane of the carrier to the ground plane as well as the horizontal angular velocity, azimuth angle and roll angle in real time.

5. The day and night electro-optical fire control sight for a recoilless weapon system with automatic roll correction according to claim 4, characterized in that: The level adopts a platform installation design structure, and is provided with a top-pull adjustment mechanism. A shim is used to ensure that the roll angle of the product is within the range of -0.3°~+0.3° when connected to a pickup truck.

6. The day and night electro-optical fire control sight for a recoilless weapon system with automatic roll correction according to claim 2, characterized in that: The roll correction software includes roll angle self-calibration, gun calibration roll angle relative calibration, roll angle measurement when the system is in use, and roll angle meter correction.

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