Thermal control device for detection head of a spaceborne detector

Abstract

The invention relates to a thermal control device for the detection head of a space-borne detector, which includes a stand-alone unit on the star, a pre-embedded heat pipe, a mounting plate, a heat dissipation cover, a multi-layer heat insulation component, an electric heater and a thermistor, wherein: the mounting plate It includes a first mounting plate and a second mounting plate; the single machine on the star includes an active feed source, several transceiver components, several array power supplies, a passive feed source and several receivers, and the active feed source is thermally insulated from the first mounting plate Installation; the front power supply and the transceiver assembly are installed with the first mounting plate through heat conduction, the passive feed is installed with heat insulation between the first mounting plate and the second mounting plate, and several of the receivers and heat conduction mounting with the second mounting plate respectively. The device can solve the problems of difficult heat dissipation of the high power density components of the detection head, serious thermal coupling between single machines, poor temperature consistency of the whole array components and large temperature fluctuations of the receiver, and realize the full cycle of the detection head of the detector when it is working on orbit High precision and high stability temperature control.

Description

technical field [0001] The invention relates to a spacecraft thermal control device, in particular to a thermal control device for a detection head of a spaceborne detector. Background technique [0002] When carrying out satellite active-passive integrated remote sensing detection of soil temperature and freeze-thaw state, based on the special configuration of the detection head of the detector, the array of transceiver components with high heat consumption in the active part is located directly under the receiver of the passive part, and the distance is very close , there is thermal coupling between the transceiver components and the receiver. Due to the shading above, the heat dissipation path of the high-heat consumption transceiver components is not smooth, which will inevitably cause a further increase in the temperature of the transceiver components. At the same time, when working in orbit, the fluctuation of external heat flow also greatly disturbs the detection hea...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thermal control device for the detection head of a space-borne detector to solve the problem of heat dissipation of the existing high-power density components of the detection head, severe thermal coupling between single machines, poor temperature consistency of the entire array components and reception problems. To solve the technical problem of large temperature fluctuations of the detector, it has realized the full-cycle high-precision and high-stability temperature control of the detector head when it is working on orbit

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