Real-time calculation method of position and attitude of large aperture antenna panel based on edge sensor

Abstract

The invention discloses a real-time calculation method of positions and postures of large-diameter antenna panels based on edge sensors. The real-time calculation method comprises the steps: a large-diameter reflecting surface antenna structure scheme is determined, and an antenna is divided into a plurality of areas in the directions of a radiation beam and a ring beam; the mounting positions ofedge sensor main bodies and targets are determined; angle values measured by the edge sensors are collected in real time; the sensor target mounting panels are sequentially determined, and the actualpositions and postures of the panels are calculated; the actual positions and postures of all the panels in the areas are obtained; and the steps are repeated to calculate the actual positions and postures of all the panels. The angle sensors mounted at the edges of the panels can be utilized to read to calculate the actual positions and postures of the deformed large-diameter antenna panels in real time, the basis is provided for active adjustment of the subsequent reflecting surface antenna panels, and thus the electrical performance and pointing accuracy of the antenna under observation service are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a method for real-time calculation of the position and posture of a large-diameter antenna panel based on an edge sensor. The invention can be used for real-time calculation of the position and attitude of the large-diameter antenna panel, laying a foundation for the active adjustment of the subsequent reflector antenna panel, so that the antenna performance can be optimized. Background technique [0002] As the antenna aperture becomes larger and the operating frequency is higher and higher, the antenna structure becomes more and more complex, making the antenna aperture efficiency and pointing more and more sensitive to structural deformation. At this time, the traditional compensation method can no longer meet the requirements of the antenna electrical performance. Requirements, the shape of the main surface must be adjusted, that is, to realize the active adjustment of the m...

AI Technical Summary

Problems solved by technology

The signal strength of celestial sources is relatively weak, it is difficult to meet the requirements, which may result in insufficient measurement resolution

However, artificial satellites have strong signals, and using artificial satellites as signal sources can generally obtain high aperture and phase resolution. However, the distribution of artificial satellites is very limited, and effective measurements can only be achieved at limited angles, which cannot meet the needs of large radio telescopes. Requirements for Surface Deformation Measurements at Arbitrary Attitudes

The use of near-field holography requires the installation of signal towers and reference antennas. The method of signal towers can indeed theoretically solve multiple attitude measurement problems, but the height of signal towers required by the size of large radio telescopes cannot be achieved at present, so near Field holographic measurement is also difficult to meet the measurement requirements

[0004] In order to overcome the shortcomings of the above two types of antenna reflective surface shape measurement methods, such as not being real-time, heavy, and unable to be measured from any angle, an edge sensor detection method is proposed to realize real-time splicing detection and adjustment in the process of batch panel observation , in order to achieve a shorter wavelength observation band and achieve better antenna technical indicators

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