Indoor simulation method for space target optical characteristic actual measurement conditions

Abstract

The invention provides an indoor simulation method for space target optical characteristic actual measurement conditions. The indoor simulation method for the space target optical characteristic actual measurement conditions comprises the following steps of step 1, arranging a simulation device for the space target optical characteristic actual measurement conditions; step 2, establishing a body coordinate system for a space target model; step 3, establishing a reference coordinate system for an indoor simulation device; step 4, defining a light source vector VL and a detector vector VD; step 5, establishing an auxiliary coordinate system; step 6, enabling three axes of the body coordinate system and three axes of the reference coordinate system to be coincided respectively and the detector vector VD and the light source vector VL to be parallel at the zero moment; step 7, obtaining angular variation on a real satellite from the moment t to the zero moment after the illumination and detection angles of the real satellite are changed at some moment t, adjusting the indoor simulation system according to the above three coordinate systems and achieving simulation of real space target illumination and observation conditions to further achieve simulation of a real space target observation process.

Description

technical field [0001] The invention belongs to the field of optical characteristic measurement of space objects, in particular to an indoor simulation method for actual measurement conditions of optical characteristics of space objects. Background technique [0002] The indoor simulation technology of the optical characteristics of space targets uses equipment and methods to simulate the space lighting conditions faced by space targets in the laboratory, and at the same time simulates the relative geometric relationship between the light source-target-detector. The purpose is to realize the actual observation process (ground-based telescope observation , space-based payload observations) and parallel simulation of observation data. Using laboratory simulation, it can assist in the establishment of various theoretical models of the target optical properties, and can compare the actual observation data to study the influence of various factors such as target shape, phase angl...

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Problems solved by technology

[0008] However, there are shortcomings in this scheme: in order to realize the 360-degree rotation of the spiral arm, this scheme requires a large circular experimental space, and a dedicated large-area laboratory needs to be established.

Although the central manipulator can realize the three-axis attitude control of the target, its load-bearing capacity is small, the attitude angle accuracy is low, and the stability of the center point is insufficient.

In addition, for the measurement of large-scale targets, it is necessary to use a large-caliber solar simulation light source, which is too large to be installed and used on the spiral arm, so this solution is still only suitable for low-precision analog measurement of the optical properties of small-sized space debris

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