Determination Method of Satellite-Earth Joint Observation for Coverage of Target Sky Area

Abstract

The invention discloses a method for determining the satellite-earth joint observation of the coverage of the target sky area. Firstly, the simultaneous coverage judgment method based on the Boolean matrix of the two-dimensional grid is adopted, and the ground station and ground station under different observation time lengths are calculated through the operation of the Boolean matrix. The simultaneous coverage of the target sky area by SVLBI satellites realizes the fine division of the target sky area and the rapid calculation of coverage, which solves the problem that the traditional ground VLBI technology can only analyze the geometric relationship between the ground station and the target sky area, but cannot analyze the ground The problem of the geometric relationship between the survey station and the SVLBI satellite to the target sky area. Then, according to the relative position relationship between the SVLBI satellite and the ground station, calculate the spatial frequency domain coverage of the target sky area by the satellite-ground joint observation, that is, the UV coverage, which reflects the composition and distribution of the spatial frequency components of the target sky area, and determines the satellite-ground The effect of the joint observation has solved the problem that the ground very long baseline interferometry technology cannot determine the observation effect of the target sky area.

Description

technical field [0001] The invention belongs to the technical field of radio astronomy, and relates to a method for determining the coverage of a target sky area through satellite-earth joint observation. Background technique [0002] Modern astrophysics observations cover the entire electromagnetic radiation from the low-frequency radio spectrum to high-energy gamma rays, and the observation equipment involved has also moved from the ground to space. On February 12, 1997, Japan successfully sent a radio telescope with an equivalent aperture of 8m into space; on July 18, 2011, Russia sent a solid-surface radio telescope with an equivalent aperture of 10m into space. The two cases filled this gap, marking the final arrival of the radio astronomy space age and the official application of the space very long baseline interferometry (Spatial very long baseline interferometry, SVLBI). my country has not yet carried out space very long baseline interferometry experiments, and rel...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for determining the satellite-ground joint observation of the coverage of the target sky area, so as to solve the problem that the ground very long baseline interferometry technology cannot analyze the geometric relationship between the ground station and the SVLBI satellite to the target sky area , and the problem that ground very long baseline interferometry technology cannot determine the observation effect of the target sky area

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