ASTER处理.doc

ASTER影像偏移值和增益值、太阳辐照度波段辐射照度增益值偏移值Band118470.676-0.676Band215530.708-0.708Band311180.862-0.862Band4232.50.2174-0.2174Band580.320.0696-0.0696Band674.920.0625-0.0625Band769.20.0597-0.0597Band859.820.0417-0.0417Band957.320.0318-0.0318L=gain*DN+biasGain=增益值，bias 偏移值/share/264195704=*L*d2/(E*sin() d=离地距离，E=太阳辐射照度，太阳高度角3.1415*(0.676*B1-0.676)*1.012/(1847*0.90630779)3.1415*(0.708*B2-0.708)*1.012/(1553*0.90630779)3.1415*(0.862*B3-0.862)*1.012/(1118*0.90630779)3.1415*(0.2174*B4-0.2174)*1.012/(232.5*0.90630779)3.1415*(0.0696*B5-0.0696)*1.012/(80.32*0.90630779)3.1415*(0.0625*B6-0.0625)*1.012/(74.92*0.90630779)3.1415*(0.0597*B7-0.0597)*1.012/(69.2*0.90630779)3.1415*(0.0417*B8-0.0417)*1.012/(59.82*0.90630779)3.1415*(0.0318*B9-0.0318)*1.012/(57.32*0.90630779)STER数据除去未经处理的原始数据Level 0以外, 其他的数据都经过了不同程度的处理。目前用户可以申请到的数据产品有L1、L2、L3 三个级别。其中使用最多的是Level 1产品。Level 1类数据产品包括两种: Level 1A ( L1A) 和Level 1B ( L1B)。L1A数据是经过重构的未经处理的仪器数据, 保持了原有分辨率。L1A数据产品文件中包含了数据字典、类属头文件、云量覆盖表、辅助数据以及3个子系统的数据, 子系统数据中包括各子系统的专门头文件、各个波段的影像数据、辐射计矫正表、几何矫正表和补充数据。L1B数据在L1A的基础上,使用L1A自带的参数完成辐射计反演和几何重采样后生成的。所以在子系统文件中少了辐射计矫正表和几何矫正表两项内容。在生产时用户可以根据需要选择采样方法, 在默认情况下采用UTM 投影, Cubic Convolution重采样方法。ASTER每天能获得并处理650景左右L1A 数据, L1B数据的最大产量为310 景左右。更高级别的数据产品还有16种之多,是在L1数据产品的基础上进行处理后生成的, 这些处理包括了更细致全面的辐射校正等。VNIR子系统有一个后视波段, 极大地方便了在轨迹方向上进行立体观察。对Aster 数据进行辐射定标时，具体是利用ENVI的FLASSH模块，在Basic ToolsPreprocessingCalibration UtilitiesFLASSH菜单下对里面的选项进行设置，包括选择传感器类型，你肯定选Aster，影像成像时间，地区平均高差，地区所处位置等等，其他选项基本上为默认选项。在做辐射定标之前必须保证，1、数据分辨率一致，因此需要对VINR数据进行重采样，2、数据格式是BIL或BIP的，而Aster默认格式是BSQ的，因此需要转换。不知是否满意Wavelength values Band1 0.55600 .band2 0.66100,band3 0.807.band41.656,band5 2.167,band6 2.209,band7 2.262,band8 2.336 band9 2.4几何校正/p-315581843.html大气校正/link?url=59xyzq4tikiizDg6_JOnZtjKENgnhKQPYX7MTXp4VZExi6Rox69n4ILKY_AemiDNvqonWcwkYUD3g-jwzDc8fVTD552Yb9fhZtTfqgo3A5eAcquired: 2013-05-30T05:25:52.998000Z Scene Center: 82.904/44.917 BAND 95/50/5 %-TILES MIN/MAX MEAN/STDEV COLOR 1 431/294/0 0/999 266.6973/132.1352 BLUE 2 379/245/0 0/943 225.5546/115.0104 GREEN 3N 422/269/0 0/837 253.1634/128.5838 RED (All DN values in units of UNKNOWN.) _? _ _? _? _VALUES _VNIR-BrowseImageLegend _Attr0.0 _ _ GROUP = INVENTORYMETADATA GROUPTYPE = MASTERGROUP OBJECT = BROWSEDESCRIPTION NUM_VAL = 1 VALUE = ASTER Surface Reflectance - VNIR Browse ImageAcquired: 2013-05-30T05:25:52.998000ZScene Center: 82.904/44.917 END_OBJECT = BROWSEDESCRIPTION OBJECT = PRODUCTIONDATETIME NUM_VAL = 1 VALUE = 2013-12-26T07:48:20.000Z END_OBJECT = PRODUCTIONDATETIME GROUP = COLLECTIONDESCRIPTIONCLASS OBJECT = VERSIONID NUM_VAL = 1 VALUE = 1 END_OBJECT = VERSIONID OBJECT = SHORTNAME NUM_VAL = 1 VALUE = Browse END_OBJECT = SHORTNAME END_GROUP = COLLECTIONDESCRIPTIONCLASSEND_GROUP = INVENTORYMETADATAEND _? _ _? _? _VALUES coremetadata.0 _Attr0.0 _ _ _? _ _ ?/PGSHOME/product.1312260021002/output/pg-BR2B05V0-1312260021_00 _CDF0.0 _ ASTER Surface Reflectance - VNIR Browse Image Acquired: 2013-05-30T05:25:52.998000Z Scene Center: 82.904/44.917 BAND 95/50/5 %-TILES MIN/MAX MEAN/STDEV COLOR 1 431/294/0 0/999 266.6973/132.1352 BLUE 2 379/245/0 0/943 225.5546/115.0104 GREEN 3N 422/269/0 0/837 253.1634/128.5838 RED (All DN values in units of UNKNOWN.) _? _ _? _? _VALUES _VNIR-BrowseImageLegend _Attr0.0 _ _ GROUP = INVENTORYMETADATA GROUPTYPE = MASTERGROUP OBJECT = BROWSEDESCRIPTION NUM_VAL = 1 VALUE = ASTER Surface Reflectance - VNIR Browse ImageAcquired: 2013-05-30T05:25:52.998000ZScene Center: 82.904/44.917 END_OBJECT = BROWSEDESCRIPTION OBJECT = PRODUCTIONDATETIME NUM_VAL = 1 VALUE = 2013-12-26T07:48:20.000Z END_OBJECT = PRODUCTIONDATETIME GROUP = COLLECTIONDESCRIPTIONCLASS OBJECT = VERSIONID NUM_VAL = 1 VALUE = 1 END_OBJECT = VERSIONID OBJECT = SHORTNAME NUM_VAL = 1 VALUE = Browse END_OBJECT = SHORTNAME END_GROUP = COLLECTIONDESCRIPTIONCLASSEND_GROUP = INVENTORYMETADATAEND _? _ _? _? _VALUES coremetadata.0 _Attr0.0 _ _ GROUP = ASTERGENERICMETADATA GROUPTYPE = MASTERGROUP OBJECT = IDOFASTERGDSDATAGRANULE NUM_VAL = 1 VALUE = AST2B5V1305300525521312260038B END_OBJECT = IDOFASTERGDSDATAGRANULE OBJECT = RECEIVINGCENTER VALUE = EDOS NUM_VAL = 1 END_OBJECT = RECEIVINGCENTER OBJECT = PROCESSINGCENTER VALUE = ASTER-GDS NUM_VAL = 1 END_OBJECT = PROCESSINGCENTER GROUP = POINTINGANGLES OBJECT = POINTINGANGLESCONTAINER CLASS = 1 OBJECT = SENSORNAME CLASS = 1 NUM_VAL = 1 VALUE = VNIR END_OBJECT = SENSORNAME OBJECT = POINTINGANGLE CLASS = 1 NUM_VAL = 1 VALUE = -8.580000 END_OBJECT = POINTINGANGLE OBJECT = SETTINGTIMEOFPOINTING CLASS = 1 NUM_VAL = 1 VALUE = 2013-05-30T05:25:34Z END_OBJECT = SETTINGTIMEOFPOINTING END_OBJECT = POINTINGANGLESCONTAINER OBJECT = POINTINGANGLESCONTAINER CLASS = 2 OBJECT = SENSORNAME CLASS = 2 NUM_VAL = 1 VALUE = SWIR END_OBJECT = SENSORNAME OBJECT = POINTINGANGLE CLASS = 2 NUM_VAL = 1 VALUE = -8.536000 END_OBJECT = POINTINGANGLE OBJECT = SETTINGTIMEOFPOINTING CLASS = 2 NUM_VAL = 1 VALUE = 2013-05-30T05:25:33Z END_OBJECT = SETTINGTIMEOFPOINTING END_OBJECT = POINTINGANGLESCONTAINER OBJECT = 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GAININFORMATIONCONTAINER OBJECT = GAININFORMATIONCONTAINER CLASS = 5 OBJECT = GAIN CLASS = 5 NUM_VAL = 2 VALUE = (04, NOR) END_OBJECT = GAIN END_OBJECT = GAININFORMATIONCONTAINER OBJECT = GAININFORMATIONCONTAINER CLASS = 6 OBJECT = GAIN CLASS = 6 NUM_VAL = 2 VALUE = (05, NOR) END_OBJECT = GAIN END_OBJECT = GAININFORMATIONCONTAINER OBJECT = GAININFORMATIONCONTAINER CLASS = 7 OBJECT = GAIN CLASS = 7 NUM_VAL = 2 VALUE = (06, NOR) END_OBJECT = GAIN END_OBJECT = GAININFORMATIONCONTAINER OBJECT = GAININFORMATIONCONTAINER CLASS = 8 OBJECT = GAIN CLASS = 8 NUM_VAL = 2 VALUE = (07, NOR) END_OBJECT = GAIN END_OBJECT = GAININFORMATIONCONTAINER OBJECT = GAININFORMATIONCONTAINER CLASS = 9 OBJECT = GAIN CLASS = 9 NUM_VAL = 2 VALUE = (08, NOR) END_OBJECT = GAIN END_OBJECT = GAININFORMATIONCONTAINER OBJECT = GAININFORMATIONCONTAINER CLASS = 10 OBJECT = GAIN CLASS = 10 NUM_VAL = 2 VALUE = (09, NOR) END_OBJECT = GAIN END_OBJECT = GAININFORMATIONCONTAINER END_GROUP = GAININFORMATION GROUP = CALIBRATIONINFORMATION OBJECT = GEOMETRICDBVERSION NUM_VAL = 3 VALUE = (03.01, 2003-10-19) END_OBJECT = GEOMETRICDBVERSION OBJECT = RADIOMETRICDBVERSION NUM_VAL = 3 VALUE = (03.13, 2013-03-04) END_OBJECT = RADIOMETRICDBVERSION OBJECT = COARSEDEMVERSION NUM_VAL = 3 VALUE = (1.00, 1997-09-03, This data is generated from GTOPO30) END_OBJECT = COARSEDEMVERSION END_GROUP = CALIBRATIONINFORMATION GROUP = DATAQUALITY GROUP = CLOUDCOVERAGE OBJECT = SCENECLOUDCOVERAGE NUM_VAL = 1 VALUE = 10 END_OBJECT = SCENECLOUDCOVERAGE OBJECT = QUADRANTCLOUDCOVERAGE NUM_VAL = 4 VALUE = (6, 3, 11, 21) END_OBJECT = QUADRANTCLOUDCOVERAGE END_GROUP = CLOUDCOVERAGE END_GROUP = DATAQUALITY OBJECT = SOURCEDATAPRODUCT NUM_VAL = 3 VALUE = (ASTL1B 1305300525521312260037, 2013-12-26T07:37:41.000Z, N/A) END_OBJECT = SOURCEDATAPRODUCT GROUP = INSTRUMENTINFORMATION OBJECT = ASTEROPERATIONMODE NUM_VAL = 1 VALUE = OBSERVATION END_OBJECT = ASTEROPERATIONMODE GROUP = OBSERVATIONMODE OBJECT = OBSERVATIONMODECONTAINER CLASS = 1 OBJECT = ASTEROBSERVATIONMODE CLASS = 1 NUM_VAL = 2 VALUE = (VNIR1, ON) END_OBJECT = ASTEROBSERVATIONMODE END_OBJECT = OBSERVATIONMODECONTAINER OBJECT = OBSERVATIONMODECONTAINER CLASS = 2 OBJECT = ASTEROBSERVATIONMODE CLASS = 2 NUM_VAL = 2 VALUE = (VNIR2, ON) END_OBJECT = ASTEROBSERVATIONMODE END_OBJECT = OBSERVATIONMODECONTAINER OBJECT = OBSERVATIONMODECONTAINER CLASS = 3 OBJECT = ASTEROBSERVATIONMODE CLASS = 3 NUM_VAL = 2 VALUE = (SWIR, ON) END_OBJECT = ASTEROBSERVATIONMODE END_OBJECT = OBSERVATIONMODECONTAINER OBJECT = OBSERVATIONMODECONTAINER CLASS = 4 OBJECT = ASTEROBSERVATIONMODE CLASS = 4 NUM_VAL = 2 VALUE = (TIR, ON) END_OBJECT = ASTEROBSERVATIONMODE END_OBJECT = OBSERVATIONMODECONTAINER END_GROUP = OBSERVATIONMODE OBJECT = PROCESSEDBANDS NUM_VAL = 1 VALUE = 01023NXXXXXXXXXXXXXXXXXXXXXXXX END_OBJECT = PROCESSEDBANDS END_GROUP = INSTRUMENTINFORMATION GROUP = SCENEINFORMATION OBJECT = ASTERSCENEID NUM_VAL = 3 VALUE = (145, 84, 1) END_OBJECT = ASTERSCENEID OBJECT = ORBITNUMBER NUM_VAL = 1 VALUE = 71529 END_OBJECT = ORBITNUMBER OBJECT = RECURRENTCYCLENUMBER NUM_VAL = 2 VALUE = (307, 231) END_OBJECT = RECURRENTCYCLENUMBER OBJECT = FLYINGDIRECTION NUM_VAL = 1 VALUE = DE END_OBJECT = FLYINGDIRECTION OBJECT = SOLARDIRECTION NUM_VAL = 2 VALUE = (147.297927, 63.727172) END_OBJECT = SOLARDIRECTION OBJECT = SPATIALRESOLUTION NUM_VAL = 3 VALUE = (15, 30, 90) END_OBJECT = SPATIALRESOLUTION GROUP = SCENEFOURCORNERS OBJECT = UPPERLEFT NUM_VAL = 2 VALUE = (45.257423, 82.510205) END_OBJECT = UPPERLEFT OBJECT = UPPERRIGHT NUM_VAL = 2 VALUE = (45.132393, 83.444348) END_OBJECT = UPPERRIGHT OBJECT = LOWERLEFT NUM_VAL = 2 VALUE = (44.699585, 82.366904) END_OBJECT = LOWERLEFT OBJECT = LOWERRIGHT NUM_VAL = 2 VALUE = (44.575891, 83.292455) END_OBJECT = LOWERRIGHT END_GROUP = SCENEFOURCORNERS OBJECT = SCENECENTER NUM_VAL = 2 VALUE = (44.917372, 82.903556) END_OBJECT = SCENECENTER OBJECT = MAPORIENTATIONANGLE NUM_VAL = 1 VALUE = 9.316002 END_OBJECT = MAPORIENTATIONANGLE END_GROUP = SCENEINFORMATIONEND_GROUP = ASTERGENERICMETADATAEND _/_ _ _/_ /_ _VALUES _productmetadata.0 _Attr0.0 _ _ GROUP = GDSGENERICMETADATA GROUPTYPE = MASTERGROUP OBJECT = SENSORSHORTNAME NUM_VAL = 3 VALUE = (ASTER_VNIR) END_OBJECT = SENSORSHORTNAME OBJECT = IDOFASTERGDSDATAGRAN