High-precision beam stabilization method during arbitrary change of ship attitude

A stabilization method and high-precision technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of one-sided electronic beam stabilization methods, expensive control accuracy of mechanical stabilization platforms, etc., and achieve good universality, high precision, and evasive control accuracy effect of error

Inactive Publication Date: 2021-10-15
HAIYING ENTERPRISE GROUP
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  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a high-precision beam stabilization method when the attitude of the ship changes arbitrarily, so as to solve the problems that the existing mechanical stabilization platform is expensive, the control accuracy is poor, and the electronic beam stabilization method is relatively one-sided.

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  • High-precision beam stabilization method during arbitrary change of ship attitude
  • High-precision beam stabilization method during arbitrary change of ship attitude
  • High-precision beam stabilization method during arbitrary change of ship attitude

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Embodiment 1

[0037] The present invention provides a high-precision beam stabilization method when the attitude of a ship changes arbitrarily, which is realized through the following steps:

[0038] Step 1: Systematize and define the reference coordinate system and attitude angle, as follows:

[0039] (1) Deck coordinate system: the stern pointing to the bow is the positive direction of the deck coordinate x-axis, the port side is pointing to the starboard side is the positive direction of the deck coordinate y-axis, and the vertical deck horizontal plane is upwards is the positive direction of the deck coordinate z-axis; the center of the cylindrical array is the spatial coordinate origin;

[0040] (2) Geographical coordinate system: the projection of the stern pointing to the bow line on the horizontal plane is the geographic coordinate x-axis, the projection of the port pointing to the starboard line on the horizontal plane is the geographic coordinate y-axis, and the horizontal plane i...

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Abstract

The invention discloses a high-precision beam stabilization method during arbitrary change of ship attitude, and belongs to the technical field of underwater sound. Firstly, a deck coordinate system, a geographic coordinate system, a rolling angle R, a pitching angle P and a course angle H are systematically and clearly defined; when the posture of the ship changes, a coordinate transformation formula is deduced according to the coordinates and the posture angle definition; the initial coordinate of the array element is (XYZ), and the coordinate after attitude transformation is expressed as (X1Y1Z1) = Td (XYZ); the time delay tau (theta, phi) = vT (theta, phi) X1Y1Z1 / c when the signal reaches the relative reference point of the array element is calculated by using the array element coordinate (X1Y1Z1) after the attitude change; and the beam output response is obtained.

Description

technical field [0001] The invention relates to the field of underwater acoustic technology, in particular to a high-precision beam stabilization method when the attitude of a ship changes arbitrarily. Background technique [0002] Attitude changes will always occur on ships at sea, especially in harsh sea conditions or small platforms. The drastic attitude changes will directly change the spatial orientation of the transmitting and receiving beams. The main impacts include: first, the transmitting and receiving orientations are unstable; The second is that when receiving in a fixed direction, the target flicker will be lost. In order to reduce the adverse effects caused by the unstable attitude of the ship, attitude compensation must be carried out. At present, there are mainly two compensation methods: [0003] (1) Mechanical stabilization method: use the reverse motion of the mechanical stabilization platform and the ship to overcome the ship's attitude change to achieve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/52
CPCG01S7/52
Inventor 郭瑞李思博李玉娟
Owner HAIYING ENTERPRISE GROUP
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