Temperature Compensation Method for Ground-Based Antenna

Abstract

The invention discloses a foundation antenna temperature compensation method, which mainly solves the problem of nonideal electric performance caused by electric performance compensation by aiming at gravity deformation in the prior art. The method is realized through the following steps that (1) the foundation reflecting surface antenna parameters are obtained, and the parameters are used for calculating the sun direct illuminating point position of an antenna; (2) an antenna panel is divided into M*N blocks, and the antenna panel block region with the sun direct illumination point is determined; (3) an antenna hot deformation sub surface position compensation regulation table is built, the sub surface position compensation regulation table is inquired through the real-time weather condition, and six kinds of 36 fitting parameters of the current block under extreme conditions are obtained; (4) the six kinds of fitting parameters are subjected to grouping interpolation, the interpolation results are used for calculation to obtain the antenna heat deformation sub surface position compensation regulation quantity, and the antenna temperature compensation is completed. The foundation antenna temperature compensation method has the advantages that the antenna deformation caused by the temperature field can be compensated in real time, the electric performance is improved, and the method can be used for the temperature deformation electric performance real-time compensation of foundation antennas of ground communication antennas, radio telescopes and the like.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a temperature compensation method for ground-based antennas, which can be used in ground communication antennas, radio astronomy telescopes and many other aspects. Background technique [0002] With the development of science and technology, reflector antennas have been applied to many aspects such as ground communication antennas, radio astronomy telescopes, and spaceborne deployable antennas. At the same time, higher requirements are placed on the electrical performance indicators of reflector antennas, such as high gain, narrow beam, high efficiency, etc., which will inevitably bring difficulties to the electromagnetic design and structural design of the reflector antenna. Reflector antennas usually work in a higher frequency band. In order to pursue higher electrical performance indicators, higher requirements are placed on the accuracy of the antenna structure. Even if the ...

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Problems solved by technology

However, most of the existing antenna compensation is implemented for gravity deformation, and the research on temperature deformation is not common, because the temperature field is affected by many factors such as ambient temperature, wind speed, weather changes, and antenna working attitude. The resulting changes in the antenna structure will have a more serious impact on the electrical performance of the antenna. At present, there is no effective method for real-time compensation for temperature deformation, resulting in low electrical performance of the antenna.

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