Sentinel-1A数据在高原山区短期土地利用监测中的应用——以贵州省安顺市为例

发布时间：2018-06-25 04:43

本文选题：土地利用 + 合成孔径雷达　；参考：《西南大学学报(自然科学版)》2017年04期

【摘要】：为推动雷达数据在高原山区的应用,以贵州省安顺市为例,利用SAR数据并辅助TM影像、DEM等数据,以灰度图像差值法、混淆矩阵法等为基础,对星载Sentinel-1A雷达数据进行短期土地利用监测的可行性做初步探究.结果表明:(1)差值获取的土地利用变化信息简单直观,有部分伪变化;(2)土地利用变化阈值范围是-0.4~3.6.城市建设用地及植被变化差异有统计学意义,水体变化差异无统计学意义;(3)变化信息监测总准确率均达到80%,Kappa系数均在0.7以上,基本达到数据统计分析的一般准确率要求.因此,Sentinel-1A数据监测高原山区土地利用变化可达到实际应用标准,并结合DEM可有效降低高原山区气候和地形等因素的影响.
[Abstract]:In order to promote the application of radar data in highland mountain areas, taking Anshun City, Guizhou Province as an example, using SAR data and TM image Dem data, the difference method of gray image and the method of confusion matrix are used as the basis. The feasibility of short-term land use monitoring for spaceborne Sentinel-1A radar data is preliminarily explored. The results showed that: (1) the land use change information obtained by the difference value was simple and intuitive, and there were some pseudo-changes, and (2) the threshold range of land use change was -0.4 ~ (3. 6). The difference of urban construction land and vegetation is statistically significant, but the difference of water body change is not statistically significant; (3) the total accuracy of monitoring the change information is above 0.7, which basically meets the general accuracy requirements of data statistical analysis. Therefore, Sentinel-1A data can be used to monitor land use change in mountainous areas of the plateau, and Dem can effectively reduce the influence of climate and topography on mountain areas.
【作者单位】：贵州师范大学地理与环境科学学院;贵州省山地资源与环境遥感应用重点实验室;黄山学院建筑工程学院;
【基金】：贵州省科学技术基金项目(黔科合J字[2014]2127) 国家自然科学基金项目(41161002) 贵州省省长基金项目(黔省专合字(2011)46号)
【分类号】：P237;TN957.52

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