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A two-axis antenna overhead method

An antenna azimuth and antenna technology, applied in the direction of the antenna, electrical components, etc., can solve the problems that the two-axis antenna cannot meet the tracking and communication requirements, the antenna cannot complete the tracking task, and the pitch axis angle cannot exceed 90 degrees, and achieves a high level of improvement. Tracking capability, meeting tracking and communication requirements, effect of reducing rotational speed

Active Publication Date: 2022-07-01
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] 1) The pitch angle range of the traditional two-axis antenna is 0-90 degrees. When the two-axis antenna is over the top under the star, the pitch axis angle cannot exceed 90 degrees;
[0005] 2) When the two-axis antenna is over the top under the star, the angle of the pitch axis is close to 90 degrees. In theory, the azimuth needs to be rotated by a maximum of 180 degrees in a single control cycle, and the required rotation speed is very high, which is far beyond the maximum rotation speed and acceleration of the azimuth. The antenna Unable to complete the tracking task, even if the tracking accuracy index requirements are lowered, the current two-axis antenna still cannot meet the tracking and communication requirements when tracking overhead

Method used

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Embodiment Construction

[0036] The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] A two-axis antenna over-the-top method, in the structure design of the antenna, compared with the traditional two-axis antenna, the pitch axis rotation range is designed to be 0-180 degrees. According to the target satellite information and the position and attitude changes during the movement of the carrier, the method calculates the pointing angle of the antenna in real time, and judges whether the difference between the azimuth target deck angle and the current deck angle is too large. Based on this, different tracking methods are adopted. In this way, the range of azimuth rotation is reduced, the speed and acceleration of azimuth rotation are reduced, and the tracking ability of the two-axis antenna is improved. refer to figure 1 , the specific top method is:

[0038] 1) According to the target sa...

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Abstract

The invention discloses a method for overtopping a two-axis antenna, which belongs to the technical field of antennas. The antenna elevation axis of the present invention can rotate continuously within the range of 0-180 degrees. The present invention first obtains the attitude information of the antenna carrier in real time, then calculates the theoretical value of the pointing angle of the antenna to the star according to the target satellite information, and calculates the position and attitude of the antenna in real time according to the theoretical value of the pointing angle to the star and the change of the position and attitude during the movement of the carrier. The star points to the deck angle to judge whether the pitch axis needs to be over the top. By adopting the method of the invention, the antenna elevation angle range can reach 0-180 degrees, and when the two-axis antenna is over the top at the sub-satellite position, the elevation axis can directly exceed 90 degrees to achieve over-the-top without requiring rapid azimuth rotation. In the case of reducing the requirement of the tracking precision index, the present invention can meet the requirements of tracking and communication.

Description

technical field [0001] The present invention relates to the technical field of antennas, in particular to a method for overtopping a two-axis antenna. Background technique [0002] The communication antenna needs to calculate the pointing angle of the antenna in real time according to the target satellite information and the position and attitude changes during the movement of the carrier, and control the antenna to quickly align the satellite to track to ensure the transmission of communication signals. [0003] The traditional small-caliber two-axis antenna tracking method in high latitude areas, when the pitch angle is low, with the movement of the carrier, the azimuth rotation range, speed and acceleration are small, which can well meet the tracking and communication requirements, but cannot be used for overhead tracking. Meet tracking and communication requirements. At present, the existing antenna overhead methods have the following shortcomings: [0004] 1) The trad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q3/08
CPCH01Q3/08
Inventor 王颜武伟良张硕高建海耿大孝崔玉龙王龙刘兴隆蔡文莉马万垒李聪聪白海龙李晓普贾彦辉刘建兵何翠瑜任学民
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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