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低溫真空環(huán)境的紅外背景模擬器的研制

Development of the low-temperature optical-infrared background simulator

  • 摘要: 紅外背景模擬器是光學(xué)遙感器性能檢測(cè)試驗(yàn)和輻射定標(biāo)試驗(yàn)中的重要設(shè)備。針對(duì)某低溫光學(xué)遙感器的光學(xué)定標(biāo)試驗(yàn)，將仿真優(yōu)化與實(shí)踐經(jīng)驗(yàn)相結(jié)合，研制了一套能夠在120 K的低溫真空環(huán)境中穩(wěn)定工作的紅外背景模擬器。該模擬器主要由真空低溫面源黑體、冷光闌和電移臺(tái)3部分組成。其中冷光闌的溫度在90～300 K范圍內(nèi)連續(xù)可調(diào)，且溫度均勻性在±3 K以?xún)?nèi)；電移臺(tái)的三維運(yùn)動(dòng)控制精度≤10 mm。該模擬器能夠適用于多種光學(xué)遙感器的紅外性能檢測(cè)試驗(yàn)和定標(biāo)試驗(yàn)。

     

    Abstract: The infrared background simulator is an important optical remote sensing test equipment for the performance test and the radiometric calibration. Based on the simulation and the experience, a stable infrared background simulator working at 120 K low-temperature vacuum is developed, for the optical remote sensor's optical low-temperature calibration test. The infrared simulator includes the surface blackbody, the cold diaphragm and the transfer station. The temperature of the cold diaphragm is continuously adjustable in the range 90～300 K, and the temperature uniformity error is less than 3 K. The three-dimensional control accuracy of the transfer station≤10 mm. The infrared background simulator can be applied to the infrared detection performance test and the calibration test for a variety of optical sensors.

     

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