光谱非匹配对光学遥感器定标精度的影响

Influence of spectrum not-matching on calibration precision of remote sensor

介绍了光学遥感器定标过程中定标光源与待观测目标的光谱非匹配对遥感器测量精度的影响。通过数值模拟计算,定量分析了光谱非匹配所产生的测量相对误差及其与遥感器光谱带宽的关系。结果表明,对于20 nm以内的分光谱光学遥感器,光谱非匹配对测量精度的影响基本可以忽略;而对中低光谱分辨或全色光学遥感器,在带宽为300 nm时,光谱非匹配造成测量相对误差可达7.9%。因此,采用光谱匹配的定标光源是非常必要的。

The spectrum not-matching of a calibration source with target source can affect remote sensor measurement precision in the calibration of remote sensor.The measuring relative errors caused by the spectrum not-matching was analyzed quantitively and the relation between the measuring errors and the bandwidth of remote sensor was given.The simulated results indicate that,for the remote sensor with bandwidth 20 nm,the error for spectrum not-matching of calibration source can be negligible;for the moderate resol...