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  • 软件名称:基于Landsat 8数据的3种地表温度反演算法在三河坝流域的对比分析
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 史新,周买春
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 采用辐射传输方程法(RTE)、单窗算法(MW)和单通道算法(SC)3种算法及相关参数,结合三河坝流域数据对TIRS10/Landsat 8遥感数据反演的地表温度(LST)进行研究和分析,并对MW算法中的参数进行了修正。输出了流域LST灰度图和密度分割图,LST的直方图和交叉验证散点图用于LST反演算法结果的比较。3种算法计算LST的像元值线性拟合程度类似,空间分布一致,其中RTE与SC算法精度接近一致差值在0~0.05 K区间范围内,MW算法的LST偏高于其他2种算法差值在0~1.27 K区间范围内。对该流域不同土地覆盖类型的地表温度进行比较,反演结果可有效根据不同土地覆盖类型反演出地表热场细部结构,显示地表温度的细节信息。将这3种算法获取的LST值与MODIS LST产品值进行比较,结果表明两者之间显著相关,有较高的一致性。通过3种反演LST算法对TIRS10/Landsat 8遥感数据进行细致和精确的分析,为其他热红外波段卫星数据反演LST的算法提供一定的参考,通过对不同土地覆盖类型LST的评价与比较,也为后续提高LST反演精度提供依据。 关键词: 地表温度;  Landsat 8;  辐射传输方程法;  单窗算法;  单通道算法     Abstract: The Land Surface Temperature (LST) of TIRS10 / Landsat 8 remote sensing data is studied and analyzed by combining the data and related parameters of Sanheba basin,and the LST inversion algorithm are used the Radiative Transfer Equation Method (RTE),Mono\|Window algorithm (MW) and Single\|Channel Method (SC).The parameters of the MW algorithm are corrected.The LST gray scale and density segmentation graphs,the histogram of LST and the cross validation flank are used to compare the results of the LST inversion algorithm.The results show that the three kinds of algorithms are similar to the linear fitting degree of LST,and the spatial distribution is consistent.The RTE and SC algorithm are close to each other,the average error of algorithm is 0~0.05 K.the LST of MW algorithm is higher than that of the other two algorithms,the average error of algorithm is 0~1.27 K.The LST of different land cover types in this basin is compared,and the inversion results can effectively reflect the details of the surface thermal field structure according to the different land cover types.The LST values obtained by these three algorithms are compared with the MODIS LST product values.The results show that there is a significant correlation between the LST values and the MODIS LST products.In this paper,3 kinds of the LST inversion algorithms are analyzed detailed accurate on TIRS10/Landsat 8 remote sensing data,provide a reference for other thermal infrared satellite data inversion LST algorithm,but also for the subsequent LST improve the accuracy of inversion basis.

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