雷州湾海域悬浮物浓度遥感监测研究

Research on Remote Sensing Information Model for Suspended Material in Leizhou Bay

以雷州湾为研究区域,利用光谱仪进行水体遥感反射率的测量和同步水样采集分析,通过研究悬浮物质量浓度与遥感反射率之间的相关性,采用波段比值法建立了悬浮物质量浓度的遥感反演模型,并利用2011年4月11日的HY-1B数据反演了研究区域的悬浮物质量浓度,得到其空间分布图。结果表明,所建立的悬浮物遥感反演模型,仪器现场遥感值与实验室实测值的平均相对误差为14.94%。利用HY-1B数据绘制了雷州湾海域悬浮物质量浓度的空间分布图,其反映的浓度值变化有待进一步验证。

Leizhou Bay has been taken as the study area in this paper, the remote sensing reflectance of water was measured with spectroradiometer and water samples were collected for further laboratory analyses simultaneously. Through studying the correlation between the suspended material concentration and the remote sensing reflectance, the model of retrieving of the suspended material was set up and the distribution of suspended material concentration was mapped for study area based on one HY-1B image captured on April 4, 2011. The result showed that the mean relative percentage error of the suspended matter concentration derived from instrument and laboratory was about 14.94%, and the distribution of the suspended matter concentration in Leizhou Bay was mapped with the HY-1B data, but the change of suspended matter concentration needed to be further verified.