Google Earth Engine（GEE）——一种预处理 sentinel-1数据的方法PERONA-MALIK 过滤器

// 导入Sentinel-1 数据集和处理筛选
var s1 =  ee.ImageCollection('COPERNICUS/S1_GRD')
            .filter(ee.Filter.listContains('transmitterReceiverPolarisation', 'VH'))
            .filter(ee.Filter.listContains('transmitterReceiverPolarisation', 'VV'))
            .filter(ee.Filter.eq('orbitProperties_pass', 'DESCENDING'))
            .filter(ee.Filter.eq('instrumentMode', 'IW'))
            .filterBounds(geometry)
            .filterDate("2020-10-01","2020-10-31");
             
var firstNoTerrainCorrection = ee.Image(s1.first());
 
Map.addLayer(firstNoTerrainCorrection,{min:-25,max:20},"no terrain correction");
 
s1 = s1.map(terrainCorrection);
var s1_pmf = s1.map(PeronaMalikFilter);
print(s1_pmf)
 
var firstTerrainCorrection = ee.Image(s1.first());
var s1_pmf  = ee.Image(s1_pmf.first());
 
 
Map.addLayer(firstTerrainCorrection,{min:-2

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原文链接：blog.csdn.net/qq_31988139/article/details/121069599