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Method for calculating A-E-C triaxial antenna coordinate of shipborne satellite communication earth station

An A-E-C, satellite communication technology, applied in the field of test communication of aerospace measurement and control technology, can solve problems such as difficulty in capturing targets, single means of ship roll isolation, polarization angle error, etc., to ensure real-time and correctness, and improve capture and tracking efficiency. , the model has a good effect of robustness

Inactive Publication Date: 2014-07-09
UNIT 63680 OF PLA
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Problems solved by technology

[0006] However, as the application of linearly polarized satellite communications in the sea develops more and more deeply, the original stable antenna tracking system gradually exposes a series of problems caused by the imperfect calculation of antenna coordinates, such as: it is difficult to capture targets under severe sea conditions , the polarization angle error is difficult to correct in real time, the isolation means of the ship is single and the reliability of the servo gyro is overly dependent, and when the self-tracking loop fails, the antenna will not be able to implement a single Phase Calibration of Pulse Tracking Receiver

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  • Method for calculating A-E-C triaxial antenna coordinate of shipborne satellite communication earth station
  • Method for calculating A-E-C triaxial antenna coordinate of shipborne satellite communication earth station
  • Method for calculating A-E-C triaxial antenna coordinate of shipborne satellite communication earth station

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Embodiment Construction

[0053] For specifying the present invention, at first the ship-borne A-E-C triaxial antenna stable tracking system is analyzed as follows:

[0054] 1), A-E-C three-axis frame form

[0055] The shipborne satellite communication antenna mount generally adopts the A-E-C three-axis form, and a third axis-the cross axis (C-axis) is added between the azimuth axis (A axis) and the pitch axis (E axis). The space is orthogonal, and the C-axis can use the secant compensation effect, so that the antenna can reliably track the zenith target. The structure of the three-axis antenna is as follows: figure 1 (The dotted line in the figure is the line of sight of the antenna).

[0056] 2) Antenna stabilization tracking system

[0057] The A-E-C servo system of a satellite earth station of a survey ship adopts a three-axis stable and two-axis tracking system. Three-axis stability means that the azimuth follows the heading, isolates the influence of heading changes on the antenna pointing, an...

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Abstract

The invention relates to shipborne triaxial stabilized antenna servo control technology, particularly relates to a method for calculating A-E-C triaxial antenna coordinate of a shipborne satellite communication earth station, and belongs to the field of test communication technology of spaceflight measurement and control technology. According to the invention, a marine inertial navigation system is used for providing accurate ship attitude information to a shipborne satellite communication earth station; the shipborne satellite communication earth station A-E-C antenna seat structure and the movement rule are analyzed; a shipborne A-E-C antenna coordinate calculation mathematic model is established by a matrix transformation method; calculation is carried out by a servo supervisory control computer based on the coordinate calculation model; interconversion among a satellite communication antenna geographic coordinate system, a deck coordinate system and an antenna coordinate system is realized; and the instantaneity and correctness of the calculation of the antenna axis system angles are guaranteed.

Description

technical field [0001] The invention relates to a ship-borne three-axis stable antenna servo control technology, in particular to a method for calculating the A-E-C three-axis antenna coordinates of a ship-borne satellite communication earth station, and belongs to the field of test communication technology of aerospace measurement and control technology. Background technique [0002] The axis-stabilized satellite communication antenna has unique advantages. It can effectively overcome the disturbance caused by the motion of the ship, reliably track the zenith target, and realize the ideal stability of the beam. However, due to the complex structure and shafting motion, higher requirements are placed on the antenna control. [0003] The antenna mount of the shipborne satellite communication earth station generally adopts the A-E-C three-axis form, and a third axis-the cross axis (C-axis) is added between the azimuth axis (A axis) and the pitch axis (E axis), which is related...

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Application Information

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IPC IPC(8): G01C21/00
CPCG01C21/16
Inventor 黄昆陈雪军张沪玲赵乾宏胡湘江周建峰吉庆张建飞其他发明人请求不公开姓名
Owner UNIT 63680 OF PLA
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