A method and apparatus for correcting three-axis antenna pointing

A three-axis antenna and antenna technology, applied in antennas, special data processing applications, instruments, etc., can solve the problems of increased antenna control error, target deviation from the antenna, and inability to meet the requirements of high-precision pointing correction of the three-axis antenna
CN110377929AActive Publication Date: 2019-10-25NO 63921 UNIT OF PLA +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NO 63921 UNIT OF PLA
Publication Date
2019-10-25

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Abstract

The invention provides a method and a device for correcting the orientation of a three-axis antenna, and the method comprises the steps: obtaining an approximate value of an orientation angle set by an antenna under an equipment horizon system and an antenna guide angle under an equipment measurement system according to a target position, provided by orbit prediction, under the equipment horizon system through coordinate transformation; obtaining a corresponding pointing angle of the approximate value of the antenna guide angle under the equipment horizon system through correction calculation;and obtaining an accurate value of the antenna guiding angle set by the antenna under the equipment horizon system under the equipment measurement system through recursive calculation and by utilizing the corresponding pointing angle of the approximate value of the antenna guiding angle under the equipment horizon system. By utilizing the method, digital tracking or program tracking can be completed in real time and with high precision under the working condition of the high frequency band of the three-axis antenna.
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Description

technical field

[0001] The present invention generally relates to the technical field of radio measurement and control. More specifically, the present invention relates to a method and apparatus for correcting the pointing of a triaxial antenna. Background technique

[0002] At present, my country's measurement and control satellite ground stations generally use two-axis Cassegrain parabolic antennas, as shown in Figure 1(a). Angle, distance measurement, speed measurement and other data calibration, to obtain high measurement accuracy, used for satellite orbit determination tasks. However, considering that the satellite measurement and control mainly works in the S frequency band, the antenna beam is relatively wide, and the measurement system and the horizon system of the two-axis antenna are the origin of the same coordinate system, so the relatively accurate satellite orbit elements are used to predict the antenna under the horizon system Pointing angle, through secant c...

Claims

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