Open earth simulator applied to three-axis air bearing table

Abstract

The invention provides an open earth simulator applied to a three-axis air bearing table. The open earth simulator applied to the three-axis air bearing table is characterized by comprising a simulated earth radiant panel, a supporting base, a telescopic rod, a sleeve rod, a connecting rod, a heat insulating ring and a connecting rod grabhook, wherein the simulated earth radiant panel is made of an electric heating earth infrared simulated source panel; the front surface of the simulated earth radiant panel is a vapour chamber; and black treatment is made on the surface of the simulated earth radiant panel. According to the invention, good temperature uniformity and long-time working temperature stability of the simulated earth radiant panel are realized and high technical index level is realized; and the universality of a three-axis air bearing table system in simulating earth thermal radiation is enhanced.

Description

technical field [0001] The invention relates to an earth simulator, in particular to an open earth simulator applied to a three-axis air bearing platform. Background technique [0002] The earth simulator provides the thermal radiation input signal for the earth sensor, and it can be divided into two categories according to the satellite experiments applied to different orbits: suitable for high orbit and suitable for low and medium orbit. [0003] The earth simulator suitable for high orbit embodies the characteristics of the earth by simulating the characteristics of the earth's disk. There are two main types: collimated and non-collimated. The collimated type has a collimated objective lens, and outputs a collimated beam to simulate an infinite target. For the sensor optical system, it is closer to the on-orbit situation and has higher precision, but it is more complicated and difficult to apply on a three-axis air bearing. The non-collimated type is to place the earth d...

AI Technical Summary

Problems solved by technology

[0005] At present, domestic research institutes or universities are mostly researching small-scale collimated earth simulators. The diameter of the earth disk is mostly less than 300mm. Although the non-collimated earth simulators have a large size, they are mostly fixed installations and have poor temperature uniformity. Difficult to apply to three-axis air bearing table

Therefore, it is necessary to design an open earth simulator applied to a three-axis air bearing platform to solve the problems of poor temperature uniformity and low temperature stability.

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