| 摘要: |
| 高分遥感影像在海域使用监测存在位置偏移的问题, 本文针对连云港海域动态监测中常用的资源三号(ZY-3)、Rapid Eye 和高分一号(GF-1)遥感数据, 应用现场测量的海域界址点数据, 对高分遥感影像在海域使用监测中的应用开展可行性分析。结果表明: (1)遥感影像相对海域界址数据偏移大小不同: Rapid Eye 影像的均方根误差ERMS 最大, 为9.09 m, 小于2 个像元; GF-1 影像的ERMS 为8.90 m, 大于4 个像元; ZY-3 影像的ERMS 最小, 为7.87 m, 小于4 个像元; (2)3 种卫星影像的东西向和南北向平均偏移量接近, ZY-3 影像的分别为4.92 m 和5.00 m; Rapid Eye 影像的分别为5.97 m 和5.84 m; GF-1 影像的分别为6.59 m 和4.52 m; (3)不同影像的内部精度一致性存在差异, 即影像上同名点与界址位置的偏移方向和偏移量存在不同, 其中Rapid Eye 影像的偏移方向无规律性, 且偏移量较大, 而ZY-3 和GF-1影像总体向东偏移, ZY-3 影像偏移量要小于GF-1 影像; (4)对于不同空间分辨率的影像而言, 校正后东西向和南北向上的误差, 并不能直接决定对应地物面积的误差大小。 |
| 关键词: 遥感 海域使用 高分影像 |
| DOI：10.11759/hykx20141011014 |
| 分类号: |
| 基金项目:2014 年海洋公益性项目(201405028); 2013 年市级科技项目(SH1317) |
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| The feasibility analysis of the high-spatial resolution remote sensing imaging in sea supervision——In the Case of Lianyungang |
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| Abstract: |
| There is a problem of position deviation with the high-spatial resolution remote sensing images in sea supervision. With the most frequently used remote sensing images of ZY-3, Rapid Eye and GF-1 and the data obtained in situ, the feasibility analysis of the high-spatial resolution remote sensing imaging in sea supervision and monitoring was performed. The results indicated that: (1) The offset between the position of boundary point data and remote sensing image is different: the ERMS of Rapid Eye was the maximum with a value of 9.09 m, suggesting that it was less than two pixels; for GF-1, the ERMS was 8.90 m, suggesting that it was more than four pixel. For ZY-3, the ERMS value was the minimum with a value of 7.87 m, suggesting that it was less than four pixels. (2) The east to west and north to south average offsets of three kinds of satellite images were very close. The average offsets of ZY-3 images were 4.92 m and 5.00 m, the average offsets of Rapid Eye images were 4.92 m and 5.00 m, and those of ZY-3 images were 4.92 m and 5.00 m, respectively. (3) The internal precision consistency of various images have a little difference. In other words, offset and corresponding direction between the same points and boundary positions was different. For Rapid Eye image, the offset direction was irregular and the offset was larger. The whole images of ZY-3 and GF-1deviated eastward, but the offset of ZY-3 is smaller than that of GF-1. (4) For different spatial resolution images, the error of x and y directions after correction was not directly related to the error of the area corresponding to surface features. |
| Key words: remote sensing sea area use high-spatial resolution image |
