Global operational land imager Landsat-8 reflectance-based active fire detection algorithm  

作　　者：S.S.Kumar D.P.Roy 

机构地区：[1]Plant and Environmental Sciences,New Mexico State University,Las Cruces,NM,USA [2]Geospatial Sciences Center of Excellence,South Dakota State University,Brookings,SD,USA

出　　处：《International Journal of Digital Earth》2018年第2期154-178,共25页国际数字地球学报（英文）

基　　金：funded by the NASA Land Cover/Land Use Change(LCLUC14-2):Multi-Source Land Imaging Science Program,Grant[NNX15AK94G];by the U.S.Department of Interior,U.S.Geological Survey(USGS)under grant[G12PC00069].

摘　　要：A global operational land imager(GOLI)Landsat-8 daytime active fire detection algorithm is presented.It utilizes established contextual active fire detection approaches but takes advantage of the significant increase in fire reflectance in Landsat-8 band 7(2.20μm)relative to band 4(0.66μm).The detection thresholds are fixed and based on a statistical examination of 39 million non-burning Landsat-8 pixels.Multi-temporal tests based on band 7 reflectance and relative changes in normalized difference vegetation index in the previous six months are used to reduce commissions errors.The probabilities of active fire detection for the GOLI and two recent Landsat-8 active fire detection algorithms are simulated to provide insights into their performance with respect to the fire size and temperature.The algorithms are applied to 11 Landsat-8 images that encompass a range of burning conditions and environments.Commission and omission errors are assessed by visual interpretation of detected active fire locations and by examination of the Landsat-8 images and higher spatial resolution Google Earth imagery.The GOLI algorithm has lower omission and comparable commission errors than the recent Landsat-8 active fire detection algorithms.The GOLI algorithm has demonstrable potential for global application and is suitable for implementation with other Landsat-like reflective wavelength sensors.

关 键 词：Earth observation remote sensing visible/infrared remote sensing 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]