STL (standard template library)-based analysis method on sheltering to solar wing by communications satellite large antenna

Abstract

The invention relates to an STL (standard template library)-based analysis method on the sheltering to a solar wing by a communications satellite large antenna, and belongs to the technical field of satellite design. The invention provides a method which can effectively analyze the sheltering to the solar wing by the large antenna according to a satellite orbit dip angle and attitude offset, and comprises the steps of firstly, converting a three-dimensional model of an object to be analyzed into an STL data file, secondly, extracting an effective triangular net in solar wing battery piece STL data, thirdly, performing interpolation processing on the triangular net of a solar wing battery piece, fourthly, processing large antenna STL data and then projecting the large antenna STL data to a plane where the solar wing battery piece exists, fifthly, judging the sheltering condition of the battery piece and the triangular net of the large antenna in a two-dimensional plane, and sixthly, computing the sheltering area according to the sheltering condition and generating an analysis graph. The method can obtain the sheltering condition of the large antenna to the solar wing at any moment, is convenient for a power supply and distribution designer to perform intuitive analysis, simplifies the computing process, and is convenient for project implementation.

Description

technical field [0001] The invention relates to an STL-based method for analyzing the shielding of a large antenna of a communication satellite to a sun wing, and belongs to the technical field of satellite design. Background technique [0002] With the increasing complexity of communication satellites' missions, the aperture of large satellite-borne antennas is getting larger and larger. The large antenna and solar wings are folded on the satellite module board when the satellite is launched and deployed in orbit. For communications satellites, the solar wings are always oriented toward the sun. If the on-orbit attitude of the satellite is continuously offset, the angle between the solar wing and the sun will show periodic changes. As the angle between the sunlight and the normal vector of the solar wing changes, at certain moments, the large antenna will block the solar wing, which is essentially blocking the solar wing. Shading reduces the intensity of sunlight project...

AI Technical Summary

Problems solved by technology

But at present, some communication satellites are no longer standard synchronous orbits, but small-inclination synchronous orbits. It is difficult to accurately express the relative geometric relationship between satellite attitude, sunlight vector and solar wing, which makes the original limit position no longer applicable;

[0006] (2) In addition to orbital changes, some large antennas also rotate around the satellite. At this time, the simple limit position in the original analysis method is no longer applicable;

[0007] (3) In addition to the limit position, if the original analysis method considers the occlusion of other positions in detail, it is necessary to manually adjust the 3D model, and the workload is relatively large;

[0008] (4) Since the solar wing is rotated by a certain angle in the 3D software, it is not conducive for the power supply and distribution designer to design the layout of the solar wing on the solar wing according to the shading diagram after this rotation;

[0009] (5) The previous analysis method only takes the entire solar wing as a whole for simple geometric analysis, without considering the actual layout of the solar cells

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