The Thermal Control Technology Study For Space Ultraviolet Imaging Spectrometer

In the1980s, space remote sensing technology achieve great development, anew kind of remote sensor called imaging spectrometer was developed.Imagingspectrometer can receive the image of object target and receive the spectrum ofobservation targt,it is a perfect performance remote sensors. The data obtained havecharacteristics with band, high spectral resolution, etc. In addition to visible, nearinfrared, thermal infrared and microwave remote sensing, space ultraviolet remotesensing technology is one who has a prominent advantage of remote sensingfield.With the development of remote sensing technology, atmospheric remotesensing is widely used in meteorological satellite, aircraft and ground meteorologicalobservation, space laboratory. With the deepening of atmospheric remote sensingresearch, the meaning of ionosphere upper atmosphere is more and more importantfor human space, the upper atmosphere remote sensing becomes the focus by theearth’s space science. In our country has carried out the study of this technology,carried out the earth limb imaging spectrometer the scientific work of this new typeof space optical remote sensing instruments. In order to ensure that the limb imagingspectrometer in the spaceborne orbit can normal operation, an important task of thewhole project design is the rationality, reliability and validity of thermal controlsubsystem. In the space environment, temperature is the major impact source of theimaging quality by optical system. The priority used simple and effective thermal control measures to ensure the spectrometer in space thermal environment hasreliable optical performance and image quality.This paper is being developed XX-X limb imaging spectrometer for the study,carried out thermal control technology research, from systems engineering point ofview, for the spectrometer system throughout the application lifecycle,according tothe requirement of the structural characteristics、mission and the flight conditions ofspectrometer, put forward a reasonable thermal design,and put forward thermalcontrol requirements for space ultraviolet remote sensorPaper provided a brief overview of development present situation and trend forimaging spectrometer and ultraviolet remote sensor. Analysis the necessity ofthermal control technology of the ultraviolet remote sensor, combined with thethermal control technology of ultraviolet optical remote sensor in domestic andoverseas, summarizes the characteristics of the ultraviolet remote sensing thermalcontrol technology.Papers from the structural characteristics of limb imaging spectrometer, theworking environment and factors influencing of temperature distribution, analyzesthermal control needs of XX-X ultraviolet limb imaging spectrometer and thermalcontrol task, summed up the ultraviolet imaging spectrometer which have thermalcontrol technology difficulties, propose a detailed thermal design, including theforward spectrometer, annular imager, UV-electric control boxes and other thermaldesign.Paper established a finite element thermal model of ultraviolet limb imagingspectrometer, make thermal analysis for thermal control system. Through theanalysis and calculation results of the spectrometer, optimize the thermal design ofthe spectrometer, eventually determine the engineering characteristics of lightweightminiaturization of thermal design scheme.for ultraviolet imaging spectrometer.Paper according to each component in the imaging spectrometer of heatdistribution and environment conditions, determine the extreme working condition of high and low temperature, low temperature working condition of each stage tomake use of finite element software IDEAS for the simulation calculation, theanalysis results show that thermal control scheme satisfies the requirement ofsystem.Papers do experiment of spectrometer, including thermal vacuum balance testand thermal optical test. Experiments prove the rationality of the theoretical analysisand the accuracy of temperature control index, and obtain high quality images. Thetest results show that the thermal control scheme is correct, effective and meet thethermal control indicators.The study of thermal design for limb imaging spectrometer in the future, laid asolid technical foundation for ultraviolet multichannel space optical remote sensorresearch and development.