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SEA ICE DRIFT MONITORING IN THE BOHAI SEA BASED ON GF4 SATELLITE

机译:基于GF4卫星的渤海海冰漂移监测。

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The Bohai Sea is the inland sea with the highest latitude in China. In winter, the phenomenon of freezing occurs in the Bohai Sea due to frequent cold wave influx. According to historical records, there have been three serious ice packs in the Bohai Sea in the past 50 years which caused heavy losses to our economy. Therefore, it is of great significance to monitor the drift of sea ice and sea ice in the Bohai Sea. The GF4 image has the advantages of short imaging time and high spatial resolution. Based on the GF4 satellite images, the three methods of SIFT (Scale invariant feature – the transform and Scale invariant feature transform), MCC (maximum cross-correlation method) and sift combined with MCC are used to monitor sea ice drift and calculate the speed and direction of sea ice drift, the three calculation results are compared and analyzed by using expert interpretation and historical statistical data to carry out remote sensing monitoring of sea ice drift results. The experimental results show that the experimental results of the three methods are in accordance with expert interpretation and historical statistics. Therefore, the GF4 remote sensing satellite images have the ability to monitor sea ice drift and can be used for drift monitoring of sea ice in the Bohai Sea.
机译:渤海是中国海拔最高的内陆海域。在冬季,由于频繁的冷浪涌入,渤海会发生冰冻现象。根据历史记录,在过去的50年中,渤海出现了3个严重的冰袋,给我们的经济造成了严重损失。因此,监测渤海海冰和海冰的漂移具有重要意义。 GF4图像具有成像时间短和空间分辨率高的优点。基于GF4卫星图像,使用SIFT(尺度不变特征-变换和Scale不变特征变换),MCC(最大互相关方法)和过筛与MCC结合的三种方法来监测海冰漂移并计算速度在海冰漂流的方向和方向上,利用专家解释和历史统计数据对这三个计算结果进行了比较和分析,对海冰漂流结果进行了遥感监测。实验结果表明,三种方法的实验结果均符合专家的解释和历史统计。因此,GF4遥感卫星图像具有监测海冰漂移的能力,可用于渤海海冰的漂移监测。

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