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- 2018
近岸/内陆典型水环境要素定量遥感空间尺度问题研究
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Abstract:
近岸/内陆水环境遥感的空间尺度问题研究包括空间变异尺度及遥感监测空间尺度需求，以及多源多尺度遥感数据及定量产品的空间尺度误差两个方面。利用长时序高分一号16 m遥感数据集高时空分辨率的综合优势，采用空间半变异函数分析方法获取了中国近岸/内陆典型水环境要素（以悬浮颗粒物为例）的空间变异尺度。基于水环境要素空间变异的连续性和泰勒级数展开理论，定量化地描述了空间尺度误差解析函数。结果表明，近岸/内陆水体等高动态水体的空间变异尺度平均在150 m以下，而外海等相对稳定水体空间变异尺度在300 m以上。随着空间分辨率的降低，受到空间变异和水环境要素非线性定量反演模型的共同影响，悬浮颗粒物的空间尺度误差显著增大，亟需重点研究区域化的尺度误差校正方法
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