Unlock instant, AI-driven research and patent intelligence for your innovation.

Calibration Method of Antenna Servo System Based on Coordinate Rotation

A technology of servo system and coordinate rotation, applied in the field of antenna servo system calibration based on coordinate rotation, can solve the problem of high cost, achieve low cost, good adaptability, and reduce design and use costs

Active Publication Date: 2021-06-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] d) Calibration of the moving carrier antenna requires special instruments such as a spirit level, theodolite, and optical telescope, and the cost is relatively high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Calibration Method of Antenna Servo System Based on Coordinate Rotation
  • Calibration Method of Antenna Servo System Based on Coordinate Rotation
  • Calibration Method of Antenna Servo System Based on Coordinate Rotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Taking the A-E (azimuth-elevation) two-axis pedestal antenna as an example, the calibration method of the antenna includes the following steps:

[0039] (1) A-E (azimuth-pitch) two-axis pedestal antenna system error analysis

[0040] Analyze the systematic errors of the A-E (azimuth-pitch) two-axis pedestal antenna, mainly including the pitch error, roll error of the antenna azimuth turntable, the mechanical zero degree of the azimuth axis, the non-orthogonal error of the azimuth axis and the pitch axis, and the pitch mechanical error. The misalignment error between the axis and the electric axis of the antenna, the misalignment error between the azimuth mechanical axis and the electric axis of the antenna, the error expression is shown in the table below;

[0041]

[0042] (2) Determine the rotation matrix of the shaft angle and system error according to the shaft relationship

[0043] A-E (azimuth-pitch) two-axis pedestal antenna axis coordinate relationship diagr...

Embodiment 2

[0071] Taking the A-E-C (azimuth-elevation-cross) triaxial pedestal antenna as an example, the calibration method of the antenna includes the following steps:

[0072] (1) System Error Analysis of A-E-C (Azimuth-Elevation-Cross) Triaxial Mount Antenna

[0073] Analyze the systematic errors of the A-E-C (azimuth-pitch-cross) three-axis mount antenna, mainly including the pitch error and roll error of the antenna azimuth turntable, the mechanical zero degree of the azimuth axis, the non-orthogonal error of the azimuth axis and the pitch axis, The mechanical zero of the pitch axis, the non-orthogonal error between the pitch axis and the cross axis, the non-coincidence error between the cross mechanical axis and the antenna electrical axis, and the non-coincidence error between the pitch mechanical axis and the antenna electrical axis, the error expression is shown in the following table:

[0074]

[0075] (2) Determine the rotation matrix of the shaft angle and system error ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a calibration method for an antenna servo system based on coordinate rotation, which belongs to the technical field of antennas. In this method, the tracking data of an antenna with a certain range of variation for a certain period of time to a target with a known accurate position is used as sample data, and the antenna is calibrated by using the least square method to analyze and calculate the sample data according to the calibration formula obtained through coordinate rotation. Servo system error. The invention realizes the system calibration of the antenna servo system through the antenna tracking data analysis method of the target star, and has the advantages of simple system structure, wide range of adaptable mounts, low calibration cost, and continuous improvement of calibration accuracy through iterative calibration advantage.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to an antenna servo system calibration method based on coordinate rotation. Background technique [0002] With the development of communication measurement and control, the application market of antennas has expanded, and in most applications, it is required to achieve precise measurement and control of antenna pointing. In particular, in the fields of vehicle-mounted mobile communications, ship-borne and airborne satellite communications, most antenna moving carriers have navigation equipment or devices to provide more accurate carrier attitude and position, which provides favorable conditions for the moving carrier antenna to achieve pointing and tracking . In this case, in order to improve the pointing accuracy of the moving carrier antenna, higher system calibration requirements are put forward for the moving carrier antenna, and the calibration method in the prior art cannot ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/10
CPCG01R29/10
Inventor 耿大孝张振庄黄元庆任金泉米青超任娟荣笑张凤
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP