External heat flow simulation device for optical remote sensor

Abstract

The invention provides an external heat flow simulation device for an optical remote sensor, which includes a base and a support, and the support is provided with two first heating zones and a second heating zone, the second heating zone is located between the two first heating zones, and An included angle is formed between the second heating zone and the two first heating zones, and the second heating zone is isolated from the two first heating zones by baffles. The first heating zone includes heating unit 1, heating unit 2 and The heating unit 3 and the second heating zone include the heating unit 4 and the heating unit 5, the heating unit 4 and the two heating units 1 are located in the same plane, and the heating unit 5 and the two heating units 2 are located in the same plane. In the present invention, the external heat flow in different areas of the light entrance can be simulated simultaneously, the uniformity of heat flow simulation in each area can be improved, and the heat flow compensation can be applied in three-dimensional partitions during the simulation test, and the accuracy of the application of external heat flow can be improved, thereby improving the simulation space. The accuracy of the thermal environment reduces simulation errors.

Description

technical field [0001] The invention belongs to space optical remote sensing, in particular to an external heat flow simulation device of an optical remote sensor. Background technique [0002] In order to verify the imaging performance of the space optical remote sensor under orbital conditions and ensure the optical remote sensor’s in-orbit operation, sufficient environmental simulation tests must be carried out on the ground, the most important of which is the thermal equilibrium camera transfer in the space environment simulator. Function detection. Under ground conditions, it is very difficult to simulate the heat flux at the light entrance of the optical remote sensor strictly and accurately. [0003] Usually, the light entrance of the optical remote sensor is a circular or square plane, and the heat flow distribution on this surface is consistent. A single-piece infrared cage can be used to simulate the heat flow outside the light entrance. However, when simulating ...

AI Technical Summary

Problems solved by technology

However, when simulating the external heat flow at the light entrance of the existing space optical remote sensor, the simulation of different external heat flow in multiple regions is limited, each heating area interferes with each other, and the uniformity of heat flow is poor.

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