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阐述了 1998年 5月 2日至 2 7日“东海重点试验区水下光谱观测”试验期间 ,利用上海技术物理研究所研制的PIS -B型光谱辐射计测得的现场光谱数据和用常规吊桶表面水质取样 ,经实验室泥沙样和光谱数据处理后 ,用最小二乘法建立光谱反射率与表层悬浮泥沙浓度之间的关系。结果表明 ,水体表面的光谱反射率与表层悬浮泥沙浓度之间呈指数关系。实践证明 ,遥测东海海区表面悬浮泥沙浓度的最佳波带为 5 5 5nm和 670nm。
The field spectral data measured by the PIS-B spectroradiometer developed by Shanghai Institute of Technical Physics during the experiment of “Underwater Spectral Observation in the Key Experimental Zone of the East China Sea” from May 2 to July 27, 1998, are described. Surface water quality sampling, the laboratory sediment-like and spectral data processing, using least squares method to establish the relationship between spectral reflectance and suspended sediment concentration. The results show that there is an exponential relationship between the spectral reflectance on the water surface and the suspended sediment concentration on the surface. Practice has proved that the best bands for surface suspended sediment concentration in the East China Sea are 555nm and 670nm.