时间序列雷达数据识别耕地种粮类型的研究  

Research on Cultivated Land Grain Monitoring Based on Time Series Radar Data

作　　者：武晓天[1] 欧正蜂 王晓蕾[2,3] 孙汉英 王长委 黄永奇[2,3] WU Xiao-tian;OU Zheng-feng;WANG Xiao-lei;SUN Han-ying;WANG Chang-wei;HUANG Yong-qi(Land and Resources Technology Center of Guangdong Province,guangzhou 510075,Guangdong Province,China;Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510610,Guangdong Province,China;National and Local Joint Engineering Laboratory of Estuary Hydropower Technology,Guangzhou 510610,Guangdong Province,China;College of Natural Resources and Environment,South China Agricultural University,guangzhou 510642,Guangdong Province,China)

机构地区：[1]广东省国土资源技术中心,广东广州510075 [2]广东省水利水电科学研究院,广东广州510610 [3]河口水利技术国家地方联合工程实验室,广东广州510610 [4]华南农业大学资源环境学院,广东广州510642

出　　处：《中国农村水利水电》2025年第1期124-128,135,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(42471340);国家自然科学基金青年项目(41604017);2022年产学合作协同育人项目(220802313195721);广东省水利科技创新项目(2020-07);广东省水利科技创新项目(2020-08)。

摘　　要：以广东省揭阳市揭西县为研究对象,采用2021年下半年的时间序列哨兵一号数据,分析了实测样本的水稻、玉米、坑塘水面、未耕种、树林和蔬菜等耕地上不同覆盖物的时间序列后向散射系数特征和类间差异性,结果表明耕地种粮类型分类的最优极化方式为VH极化,在此基础上构建了基于长短期记忆网络(Long Short-Term Memory networks,LSTM)的耕地种粮类型识别模型,模型精度达到90%。根据模型提取了研究区的水稻、玉米、坑塘水面、未耕种、树林和蔬菜的空间分布,为多云地区的耕地种类监测提供了新的遥感技术手段。Taking Jiexi County,Jieyang City,Guangdong Province as the research object,this paper used the time series Sentinel-1 data of the second half of 2021 to anylize the time series backscattering coefficient characteristics and inter-class differences of different covers on cultivated land such as rice,corn,pond water surface,uncultivated,woods and vegetables in the measured samples.The results showed that the optimal polarization mode of crop classification in Jiexi County was VH polarization,on which,a model for the classification of cultivated land crops based on long short-term memory network(LSTM)was constructed.The model accuracy reached 90%.The spatial distribution of rice,corn,pond water,uncultivated land,forests and vegetables in the study area was extracted based on the model,providing a new remote sensing technology for monitoring cultivated land types in cloudy areas.

关 键 词：耕地种粮监测 哨兵一号 时间序列 长短期记忆网络 揭西县 

分 类 号：S127[农业科学—农业基础科学]