CAJ | 학술논문

介绍了一种以半导体发光二极管（LED）和溴钨灯为光源的光谱可调谐地面景物光谱辐射源，及其系统结构和控制系统设计。利用地物光谱辐射源模拟了大量不同地物光谱，在控制系统中建立了地物光谱数据库，引进了改进型遗传算法匹配出了光谱数据库中的500余种地物光谱。进而详细分析了几种典型地物的光谱匹配相似度，平均光谱匹配误差以及全波段，红，绿，蓝和近红外波段光谱匹配相似度。目标辐亮度为50W·（m2·sr）－1时，地物光谱辐射源平均光谱匹配误差在10％以内，最低可达6．0％；全波段光谱匹配相似度高于0．895，最高可达0．983；对于同一景物光谱红、绿、蓝和近红外波段（特别是绿光和近红外波段）光谱匹配相似度低于全波段，绿光和近红外波段光谱匹配相似度与红光和蓝光波段相比，最大低幅为50％。地物光谱辐射源能够用于光学遥感器的辐射定标，能有效解决光学遥感器的工作目标与定标光源光谱不匹配造成的定标误差。
개소료일충이반도체발광이겁관（LED）화추오등위광원적광보가조해지면경물광보복사원，급기계통결구화공제계통설계。이용지물광보복사원모의료대량불동지물광보，재공제계통중건립료지물광보수거고，인진료개진형유전산법필배출료광보수거고중적500여충지물광보。진이상세분석료궤충전형지물적광보필배상사도，평균광보필배오차이급전파단，홍，록，람화근홍외파단광보필배상사도。목표복량도위50W·（m2·sr）－1시，지물광보복사원평균광보필배오차재10％이내，최저가체6．0％；전파단광보필배상사도고우0．895，최고가체0．983；대우동일경물광보홍、록、람화근홍외파단（특별시록광화근홍외파단）광보필배상사도저우전파단，록광화근홍외파단광보필배상사도여홍광화람광파단상비，최대저폭위50％。지물광보복사원능구용우광학요감기적복사정표，능유효해결광학요감기적공작목표여정표광원광보불필배조성적정표오차。
A spectrum-tunable ground scenery spectrum radiation source,using LEDs and bromine tungsten lamp as lumines-cence media,was introduced.System structure and control of the spectrum radiation source was expounded in detail.In order to simulate various ground scenery spectrum distribution with different shapes,a ground scenery spectral database was established in the control system.An improved genetic algorithm was proposed,and a large number of ground scenery spectra were pro-duced by the simulator.Spectral similarity and the average spectral matching error of several typical ground scenery spectra were further analyzed.Spectral similarity of red bands,green bands,blue bands and near-infrared spectral band also was discussed. When the radiance of the target was 50 W·(m2 ·sr)-1 ,the average spectral matching error was less than 10% and spectral similarity was greater than 0.9,up to 0.983.Spectral similarity of red band,green band,blue band and near-infrared band (es-pecially green band and near-infrared band)was less than that of full-band.Compared with blue band and red band,spectral simi-larity of green band and near-infrared band low-amplitude maximum can rearch50%.Ground scenery spectrum radiation source can be used as radiometric calibration source for optical remote sensor,and calibration error,which is caused by objectives and calibration sources spectral mismatch,can be effectively reduced.