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首页> 外文期刊>Chinese science bulletin >Hyperspectral retrieval model of phycocyanin in case II waters
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Hyperspectral retrieval model of phycocyanin in case II waters

机译：案例二水域藻蓝蛋白的高光谱检索模型

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摘要

Phycocyanin, a functional protein found in blue-green algae, with characteristic absorption peak around 620 nm, can be used to detect the quantity of blue-green algae in waters. Spectral characteristics of phycocyanin were studied by measuring hyperspectral water leaving radiance and absorption curve, and the results showed that the absorption peak of phycocyanin around 620 nm was evident in the curve of water leaving radiance. Bio-optical model of phycocyanin was set up with analytical methods and calibrated with error analysis. Linear relationship between phycocyanin concentration measured and that retrieved with calibrated bio-optical model (R = 0.755) was better than that retrieved with the band ratio of 709 nm/620 nm (R = 0.729), which proved that the calibration was necessary for improving the accuracy of phycocyanin concentration.
机译：藻蓝蛋白是蓝藻中发现的一种功能蛋白，其特征吸收峰在620 nm附近，可用于检测水中的蓝藻量。通过测量高光谱离水辐射率和吸收曲线，研究了藻蓝蛋白的光谱特征，结果表明，离水辐射曲线中的藻蓝蛋白吸收峰在620 nm左右。通过分析方法建立了藻蓝蛋白的生物光学模型，并通过误差分析对其进行了校准。测得的藻蓝蛋白浓度与通过校准的生物光学模型获得的藻红蛋白浓度之间的线性关系（R = 0.755）优于在709 nm / 620 nm的谱带比下获得的线性关系（R = 0.729），证明校准对于改善藻蓝蛋白浓度的准确性。

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