CAJ | 학술논문

设计了由硅光电探测器作为反馈元件，采用 DSP 控制主光源开口处电动可调光阑大小，实现输出光谱辐亮度值连续可调的高精度程控化可见/近红外波段积分球辐射定标装置。经过理论设计和计算，在该装置内放置挡屏，保证了出射口处输出光谱辐亮度值的均匀性。使用 PR-655高精度扫描式亮度计测量出该装置的最大输出光谱辐亮度值为23061 cd/m2；在直径150 mm 范围内的光谱辐亮度值的非均匀性为1.04%；输出光谱辐射亮度值的稳定性为0.8%。实验结果表明：该装置完全可以满足可见/近红外光学遥感仪器的地面辐射定标需要，并可实现智能程控化控制，提高了定标测试精度。
설계료유규광전탐측기작위반궤원건，채용 DSP 공제주광원개구처전동가조광란대소，실현수출광보복량도치련속가조적고정도정공화가견/근홍외파단적분구복사정표장치。경과이론설계화계산，재해장치내방치당병，보증료출사구처수출광보복량도치적균균성。사용 PR-655고정도소묘식량도계측량출해장치적최대수출광보복량도치위23061 cd/m2；재직경150 mm 범위내적광보복량도치적비균균성위1.04%；수출광보복사량도치적은정성위0.8%。실험결과표명：해장치완전가이만족가견/근홍외광학요감의기적지면복사정표수요，병가실현지능정공화공제，제고료정표측시정도。
The high precison intelligent radiation calibration device of visible/near-infrared integratl sphere can achieve continuously adjustable output spectral radiance luminance, using DSP controlling the electrically adjustable exit size in front of the main light source by silicon photo detector for feedback. Designed and calculated by the theory of integrating sphere, Stopper screen was placed within the device in order to ensure the uniformity of the output spectral radiance luminance of the exit. Using precision scanning PR-655 luminance meter, it was measured that the spectral radiance luminance of the maximum output value was 23 061 cd/m2; In the range of 150 mm diameter, the non-uniformity is 1.04% ; the stability is 0.8%. Experimental results show that the device meets the ground radiometric calibration needs for the visible/near-infrared optical remote sensing instrument, and it can realize intelligent programmable control to improve the calibration accuracy.