Thermal deformation real-time forecast method for axial symmetry reflector antenna

Abstract

The invention relates to the technical field of antennas, in particular to a thermal deformation real-time forecast method for an axial symmetry reflector antenna. Temperature measuring data and temperature simulation data are combined, and the thermal deformation real-time forecast method for the axial symmetry reflector antenna is put forward. Accordingly, an antenna temperature field is acquired accurately in real time, the real-time forecast for the thermal deformation of the reflector antenna is achieved, and the influence of the thermal deformation of the reflector antenna to electrical properties of the reflector antenna is reduced in real time. The thermal deformation real-time forecast method for the axial symmetry reflector antenna is used for the real-time forecast of the temperature field and the thermal deformation of the axial symmetry reflector antenna in a project.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a real-time estimation method for thermal deformation of an axisymmetric reflector antenna. It is applied to real-time prediction of temperature field and thermal deformation of axisymmetric reflector antenna in engineering. Background technique [0002] With the development of science and technology, reflector antennas are developing in the direction of high frequency, high gain, and large diameter. Any small structural deformation will cause a significant decrease in electrical performance. As one of the antenna loads, temperature has been paid more and more attention. The IRAM-30m radio telescope in Spain has an operating frequency of up to 230GHz, and the antenna is equipped with temperature control equipment as a whole. The radio telescopes such as the 65m Sheshan in Shanghai and the Effelsberg-100m in Germany are difficult to configure with temperature control equipment du...

AI Technical Summary

Problems solved by technology

The finite element method is based on the theory of heat transfer, which can reflect the internal heat transfer law of the structure. However, due to the complex time-varying environment, it is difficult to measure accurately, and there are too many subjective factors in the setting of boundary conditions, and the calculation error is large. Only one kind of work can be calculated each time. The temperature field under the condition and the calculation time is long, not real-time

Arranging temperature sensors can obtain the temperature field of the actual antenna in real time, but the cost is high, and the reliability of the data measured by a large number of sensors decreases, and there is a certain interpolation error when using the interpolation method

In short, it is difficult to accurately obtain the temperature field of the antenna in real time, and it is impossible to realize the real-time prediction of the thermal deformation of the reflector antenna, and it is impossible to reduce the influence of the thermal deformation of the reflector antenna on its electrical performance in real time according to the existing technology

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