Method for checking consistency of azimuth signal receiver and artillery azimuth rotation angle

Abstract

The invention discloses a method for checking consistency of azimuth rotation angles of an azimuth sensor and a gun, and belongs to the technical field of measurement. The invention aims to provide a method for checking the consistency of the azimuth sensor and the artillery azimuth rotation angle, which is used for checking the consistency of the azimuth sensor and the artillery azimuth rotation angle by adopting two theodolites before and after the artillery azimuth rotation. According to the method, two theodolites are adopted for horizontally threading a gun bore before and after artillery azimuth rotation, then the two theodolites are used for aiming, so that horizontal angles with three-axis centers of the two theodolites as vertexes are measured, a third angle is calculated through an interior angle of a triangle to serve as an artillery azimuth rotation angle, and then the third angle is compared with an angle of a trusted instrument. The method is simple to operate, can accurately check the consistency of the azimuth signal receiver and the artillery azimuth rotation angle, and is suitable for various types of artillery.

Description

Technical Field

[0001] The invention belongs to the technical field of measurement. Background Art

[0002] The receiver of the gun tracking system is a sensor device of the launcher. It has the function of feedback of the device's operating angle position and control of the device's operation and firing range. The receiver consists of two parts: firing angle and azimuth. Ideally, the rotation angle displayed by the receiver should be consistent with the rotation angle of the gun body. However, under actual conditions, the two may not be consistent. It is necessary to check whether the consistency between the receiver and the gun body meets the technical requirements.

[0003] The current method for checking the consistency between the azimuth receiver and the gun body is: before and after the azimuth rotation of the gun, use the periscope fixed on the barrel to aim at the same fixed point 100m away. The difference between the angle change of the azimuth receiver and the change of the periscope reading is the consistency deviation between the azimuth receiver and the gun body.

[0004] The main problem with this method is that the fixed position of the periscope is usually not on the rotation center of the gun, and its observation result is affected by multiple factors: the angle (angular deviation) caused by the non-parallelism between the vertical axis of the periscope and the rotation axis of the gun, the distance between the vertical axis of the periscope and the rotation axis of the gun (horizontal deviation), the distance between the rotation axis of the gun and the aimed point, and the setting angle error of the periscope. Summary of the invention

[0005] The purpose of the present invention is to provide a method for checking the consistency of an azimuth receiver and an artillery azimuth rotation angle by using two theodolites before and after the artillery azimuth rotation.

[0006] The steps of the present invention are: S4. The horizontal angle of theodolite A is set to zero, and the reading of the receiver is returned to zero; S5. Turn the gun direction machine so that the receiver reading shows the specified inspection angle; S6. Set up theodolite B in front of the muzzle and level it. The three-axis center of theodolite B is approximately at the same height as the center of the muzzle end face. S7, adjust theodolite B and the gun to achieve horizontal threading of theodolite B gun bore; S8. The horizontal angle of theodolite B is set to zero. At this time, the reading of the azimuth receiver is α S ; S9, theodolite A and theodolite B are aligned, and the horizontal observation angles of theodolite A and theodolite B are α A and α B ; S10, calculate the gun azimuth rotation angle α according to formula (1) O ; α O=180 ° -α A |-α B | (1) S11. Calculate the deviation δ between the azimuth receiver reading and the gun azimuth rotation angle according to formula (2): S , this deviation δ S is the deviation of the consistency between the azimuth receiver and the gun azimuth rotation angle at this position δ S =α S -α O (2).

[0007] The invention is easy to operate, can accurately check the consistency between the azimuth receiver and the artillery azimuth rotation angle, and is suitable for various types of artillery. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the inspection site layout. DETAILED DESCRIPTION

[0009] The present invention adopts two theodolites to respectively thread the horizontal line of the gun bore before and after the azimuth rotation of the gun, and then the two theodolites are aimed at each other, so as to measure the horizontal angles with the three-axis centers of the two theodolites as vertices, and calculate the third angle as the azimuth rotation angle of the gun through the sum of the internal angles of the triangle, and then compare it with the angle of the receiver, so as to realize the consistency check of the azimuth receiver and the azimuth rotation angle of the gun.

[0010] The steps of the present invention are: S1. The gun under test is driven into the designated testing area and the gun is leveled using the patented “gun rotation plane leveling method” (CN115717848 A).

[0011] S2. Set up theodolite A in front of the muzzle and level it. The three-axis center of theodolite A is approximately at the same height as the center of the muzzle end face.

[0012] S3. Adjust theodolite A and the gun, and achieve horizontal threading of the theodolite A through the gun bore using the patented “horizontal threading method of theodolite gun bore” (CN 114018090 B).

[0013] S4. Set the horizontal angle of theodolite A to zero and the reading of the receiver to zero.

[0014] S5. Turn the gun steering mechanism so that the receiver reading displays the specified inspection angle.

[0015] S6. Set up theodolite B in front of the muzzle and level it. The three-axis center of theodolite B is approximately at the same height as the center of the muzzle end face.

[0016] S7. Adjust theodolite B and the gun, and achieve horizontal threading of the theodolite B through the patented "horizontal threading method of theodolite gun bore" (CN 114018090 B).

[0017] S8. The horizontal angle of theodolite B is set to zero. At this time, the reading of the azimuth receiver is α S .

[0018] S9, theodolite A and theodolite B are aligned, and the horizontal observation angles of theodolite A and theodolite B are α A and α B .

[0019] S10, calculate the gun azimuth rotation angle α according to formula (1) O α O =180 ° -|α A |-|α B |(1).

[0020] S11. Calculate the deviation δ between the azimuth receiver reading and the gun azimuth rotation angle according to formula (2): S , this deviation δ S is the deviation of the consistency between the azimuth receiver and the gun azimuth rotation angle at this position δ S =α S -α O (2).

[0021] Examples: Basic conditions: the rotation radius of the gun is 5000mm, the leveling error of the gun rotation plane is 1°; the standard deviation of the vertical line observed by the theodolite is 0.2mm, and the horizontal angle observation error of the theodolite is 2″; the standard deviation of the angle between the vertical axis of the periscope and the rotation axis of the gun is 5°, the distance between the vertical axis of the periscope and the rotation axis of the gun is 500mm, the distance between the rotation axis of the gun and the aimed point is 200m, the setting angle error of the periscope is 0.3mil, and the standard deviation of the aimed point observed by the periscope is 0.3mil. Random sampling m=100000 times, the result errors of the traditional method and the present invention at different inspection angles are obtained, as shown in Table 1.

[0022] Table 1 Differences in results between the two methods under basic conditions

[0023] It can be seen from Table 1 that the error of the present invention is stable at about 0.1 mrad, which is much smaller than the traditional method and has obvious advantages.

Claims

1. A method for checking the consistency between an azimuth receiver and an artillery azimuth rotation angle, characterized in that: The steps are: S4. The horizontal angle of theodolite A is set to zero, and the reading of the receiver is returned to zero; S5. Turn the gun direction machine so that the receiver reading shows the specified inspection angle; S6. Set up theodolite B in front of the muzzle and level it. The three-axis center of theodolite B is approximately at the same height as the center of the muzzle end face. S7, adjust theodolite B and the gun to achieve horizontal threading of theodolite B gun bore; S8. The horizontal angle of theodolite B is set to zero. At this time, the reading of the azimuth receiver is α S ; S9, theodolite A and theodolite B are aligned, and the horizontal observation angles of theodolite A and theodolite B are α A and α B ; S10, calculate the gun azimuth rotation angle α according to formula (1) O ; α O ＝180°-|α A |-|α B | (1) S11. Calculate the deviation δ between the azimuth receiver reading and the gun azimuth rotation angle according to formula (2): S , this deviation δ S is the deviation of the consistency between the azimuth receiver and the gun azimuth rotation angle at this position d S =a S -a O (2)。

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