Secondary zero correction method for offset rotary reflector antenna
Through the secondary zero correction method, the zero correction value is updated and the error is eliminated, which solves the problem of in-orbit pointing accuracy of the new biased rotary reflective surface antenna, and achieves higher communication efficiency.
CN119726118AActive Publication Date: 2025-03-28AEROSPACE LONG MARCH LAUNCH VEHICLE TECH CO LTD
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Patent Information
- Application Number
- CN202411689620.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-11-25
AI Technical Summary
Technical Problem
The in-orbit pointing accuracy of the new biased rotary reflective surface structure antenna is difficult to ensure, and the original error correction method is not applicable.
Method used
The secondary zero-position correction method is used to initially calibrate the zero position through the mechanical arm, paste the cubic prism for three-coordinate calibration, measure the error and update the zero-position correction value to eliminate the error between the Y-axis output shaft mechanical reference and the X-axis base mechanical reference.
Benefits of technology
It effectively ensures the direction accuracy of the biased rotating reflective surface antenna, eliminates errors, and improves communication efficiency.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a secondary zero position correction method for an offset rotating reflector antenna, which comprises the following steps: firstly, primarily calibrating zero positions of two shafts by using a mechanical arm for the first time, and calibrating references are an output shaft flange reference and a fixed shaft base mechanical reference; secondly, respectively pasting a cubic prism (the prism precision is not less than 5.5 '') on an antenna mechanism base and a Y-axis output shaft mechanical structural member in a part state, calibrating an error relation between coordinate systems of the two prisms and a mechanical reference coordinate system of a mechanical mechanism where the prisms are located by using three coordinates, and then measuring the error relation between the coordinate systems of the two prisms and the mechanical reference coordinate system of the mechanical mechanism by using a high-precision theodolite during a development test; according to the error relation between the two prisms at the position (0, 0), the error between the Y-axis output shaft mechanical reference and the X-axis base mechanical reference is calculated through the measurement errors, and the zero correction value is updated, so that the errors in the two directions of the Y-axis output shaft mechanical reference and the X-axis base mechanical reference are eliminated, and the purpose of ensuring the pointing precision is achieved.
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