CAJ | 학술논문

基于敦煌辐射校正场，利用高、中两类定标场地，采用反射率基法对资源三号卫星多光谱传感器进行在轨场地绝对辐射定标，获取多光谱传感器的2013年绝对辐射定标系数，并与2012年定标结果进行对比分析。同时，利用2013年7月1日Landsat 8的operational land imager（OLI）影像对资源三号卫星多光谱传感器进行交叉定标，验证定标系数的可靠性。结果表明，一年来资源三号卫星多光谱传感器各波段性能存在1％～8.5％的变化；交叉定标和场地定标的结果有较好的一致性，说明定标结果具有较高的可信度。
기우돈황복사교정장，이용고、중량류정표장지，채용반사솔기법대자원삼호위성다광보전감기진행재궤장지절대복사정표，획취다광보전감기적2013년절대복사정표계수，병여2012년정표결과진행대비분석。동시，이용2013년7월1일Landsat 8적operational land imager（OLI）영상대자원삼호위성다광보전감기진행교차정표，험증정표계수적가고성。결과표명，일년래자원삼호위성다광보전감기각파단성능존재1％～8.5％적변화；교차정표화장지정표적결과유교호적일치성，설명정표결과구유교고적가신도。
A field calibration campaign of ZY-3 multispectral sensor (MUS) was performed by the China Center for Resources Satellite Data and Application at the Dunhuang site .The reflectance-based method with two-point sites was used to obtain MUS absolute calibration coefficients in 2013 .Compared to the calibration results in 2012 ,the calibration coefficients in 2013 changed by about 1% ~8.5% in different bands .The results were also validated by intercalibration method using the Landsat 8 Opera-tional Land Imager (OLI) data .It shows largely good consistency between field calibration and intercalibration .It was concluded that the absolute calibration coefficients were highly reliable .