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通过研究交叉检验船测样点上的7种不同尺度的海冰密集度数据,发现相同时间和相同空间尺度的海冰密集度值吻合度最高,不同时间不同尺度的海冰密集度值的相关性较弱。由数据获取时间不同引起的密集度差异在高分辨率数据上体现明显。真实船测点与伪船测点之间的吻合度不高,受观测者主观因素、天气条件、影像处理质量和伪船测点提取方法的影响。虽然伪船测点方法在海冰边界研究中具有快速、大面积提取边界点的优势,但需要控制提取算法中的误差传播。
By studying the sea ice concentration data of seven different scales at the cross-test ship sampling sites, it is found that the sea ice concentration values at the same time and the same spatial scale have the highest coincidence degree, and the sea ice concentration values at different scales at different times are correlated Weak sex. The differences in the intensity caused by different data acquisition times manifest themselves in high-resolution data. The coincidence between the true ship measuring point and the false ship measuring point is not high, which is affected by the subjective factors of the observer, the weather conditions, the quality of the image processing and the extraction method of the false ship measuring point. Although the pseudo-ship point detection method has the advantage of fast and large-area extraction of boundary points in the research of sea-ice boundary, it is necessary to control the error propagation in the extraction algorithm.