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1/15实验02认识遥感数据2.1数据的获取Landsat-7ETM+数据可以通过Landsat官方网站直接下载。网址：）点击免费数据。2）点击Path-RowFinder查询贵阳市所在影像轨道号和行号。2/153/15查询结果：127042轨道号127，行号042）4/153）寻找到对应的影像文件，下载，解压缩后得到如下一组文件：其中，p127r042_7t20011123.met是数据头文件，里面包含了数据获取时的相关信息，其他文件为ETM+7个多光谱波段以及全色PAN波段的文件，文件格式为GeoTIFF，其中6波段包括两个文件。p1EanqFDPw2.2识别影像头文件信息。ETM+数据头文件可用写字板打开。如下所示：GROUP=METADATA_FILE5/15PRODUCT_CREATION_TIME=2003-09-17T03:42:52Z影像产品生成时间DXDiTa9E3dPRODUCT_FILE_SIZE=653.9影像产品大小为653.9MSTATION_ID=EDCGROUND_STATION=SGSGROUP=ORTHO_PRODUCT_METADATA影像产品元数据SPACECRAFT_ID=Landsat7卫星SENSOR_ID=ETM+传感器ACQUISITION_DATE=2001-11-23影像获取时间WRS_PATH=127轨道号RTCrpUDGiTWRS_ROW=042行号5PCzVD7HxASCENE_CENTER_LAT=+25.9900393扫描中心纬度jLBHrnAILgSCENE_CENTER_LON=+106.5072817扫描中心经度xHAQX74J0XSCENE_UL_CORNER_LAT=+26.9320724左上角纬度LDAYtRyKfESCENE_UL_CORNER_LON=+105.7986874SCENE_UR_CORNER_LAT=+26.6667851右上角纬度Zzz6ZB2LtkSCENE_UR_CORNER_LON=+107.6173262SCENE_LL_CORNER_LAT=+25.3045016左下角纬度dvzfvkwMI1SCENE_LL_CORNER_LON=+105.4097302SCENE_LR_CORNER_LAT=+25.0447063右下角纬度rqyn14ZNXISCENE_LR_CORNER_LON=+107.2048582SCENE_UL_CORNER_MAPX=579291.000左上角X坐标EmxvxOtOcoSCENE_UL_CORNER_MAPY=2979162.000SCENE_UR_CORNER_MAPX=760494.000SCENE_UR_CORNER_MAPY=2952201.000SCENE_LL_CORNER_MAPX=541243.500SCENE_LL_CORNER_MAPY=2798728.500SCENE_LR_CORNER_MAPX=722446.500SCENE_LR_CORNER_MAPY=2771710.500BAND1_FILE_NAME=p127r042_7t20011123_z48_nn10.tif波段1名称SixE2yXPq5BAND2_FILE_NAME=p127r042_7t20011123_z48_nn20.tif6ewMyirQFLBAND3_FILE_NAME=p127r042_7t20011123_z48_nn30.tifkavU42VRUsBAND4_FILE_NAME=p127r042_7t20011123_z48_nn40.tify6v3ALoS89BAND5_FILE_NAME=p127r042_7t20011123_z48_nn50.tifM2ub6vSTnPBAND61_FILE_NAME=p127r042_7k20011123_z48_nn61.tif0YujCfmUCwBAND62_FILE_NAME=p127r042_7k20011123_z48_nn62.tifeUts8ZQVRd6/15BAND7_FILE_NAME=p127r042_7t20011123_z48_nn70.tifsQsAEJkW5TBAND8_FILE_NAME=p127r042_7p20011123_z48_nn80.tifGMsIasNXkAGROUP=PROJECTION_PARAMETERS发射参数TIrRGchYzgREFERENCE_DATUM=WGS84REFERENCE_ELLIPSOID=WGS84参考椭球体7EqZcWLZNXGRID_CELL_ORIGIN=Center坐标原点lzq7IGf02EUL_GRID_LINE_NUMBER=1栅格行zvpgeqJ1hkUL_GRID_SAMPLE_NUMBER=1栅格列NrpoJac3v1GRID_INCREMENT_UNIT=Meters单位1nowfTG4KIGRID_CELL_SIZE_PAN=14.250全色波段分辨率fjnFLDa5ZoGRID_CELL_SIZE_THM=57.000热红外波段分辨率tfnNhnE6e5GRID_CELL_SIZE_REF=28.500多光谱波段分辨率HbmVN777sLFALSE_NORTHING=0ORIENTATION=NUPRESAMPLING_OPTION=NNMAP_PROJECTION=UTM地图投影V7l4jRB8HsEND_GROUP=PROJECTION_PARAMETERSGROUP=UTM_PARAMETERSUTM投影参数83lcPA59W9ZONE_NUMBER=+48分带号mZkklkzaaPEND_GROUP=UTM_PARAMETERSSUN_AZIMUTH=152.6936329太阳方位角AVktR43bpwSUN_ELEVATION=38.8194681太阳高度角ORjBnOwcEdQA_PERCENT_MISSING_DATA=16无信息象元所占百分比2MiJTy0dTTCLOUD_COVER=70云量gIiSpiue7APRODUCT_SAMPLES_PAN=17054全色波段列数uEh0U1YfmhPRODUCT_LINES_PAN=15304全色波段行数IAg9qLsgBXPRODUCT_SAMPLES_REF=8527多光谱波段列数7/15WwghWvVhPEPRODUCT_LINES_REF=7652PRODUCT_SAMPLES_THM=4264热红外波段列数asfpsfpi4kPRODUCT_LINES_THM=3826OUTPUT_FORMAT=GEOTIFF输出格式ooeyYZTjj1END_GROUP=ORTHO_PRODUCT_METADATAGROUP=L1G_PRODUCT_METADATAL1G级产品元数据BkeGuInkxIBAND_COMBINATION=123456678CPF_FILE_NAME=L7CPF20011001_20011231_04定标参数文件CalibrationParameterFile）PgdO0sRlMoGROUP=MIN_MAX_RADIANCE各波段辐射最大值最小值3cdXwckm15LMAX_BAND1=191.600LMIN_BAND1=-6.200LMAX_BAND2=196.500LMIN_BAND2=-6.400LMAX_BAND3=152.900LMIN_BAND3=-5.000LMAX_BAND4=157.400LMIN_BAND4=-5.100LMAX_BAND5=31.060LMIN_BAND5=-1.000LMAX_BAND61=17.040LMIN_BAND61=0.000LMAX_BAND62=12.650LMIN_BAND62=3.200LMAX_BAND7=10.800LMIN_BAND7=-0.350LMAX_BAND8=243.100LMIN_BAND8=-4.700END_GROUP=MIN_MAX_RADIANCEGROUP=MIN_MAX_PIXEL_VALUE各波段象元最大值最小值h8c52WOngMQCALMAX_BAND1=255.0QCALMIN_BAND1=1.0QCALMAX_BAND2=255.0QCALMIN_BAND2=1.0QCALMAX_BAND3=255.0QCALMIN_BAND3=1.0QCALMAX_BAND4=255.0QCALMIN_BAND4=1.08/15QCALMAX_BAND5=255.0QCALMIN_BAND5=1.0QCALMAX_BAND61=255.0QCALMIN_BAND61=1.0QCALMAX_BAND62=255.0QCALMIN_BAND62=1.0QCALMAX_BAND7=255.0QCALMIN_BAND7=1.0QCALMAX_BAND8=255.0QCALMIN_BAND8=1.0END_GROUP=MIN_MAX_PIXEL_VALUEGROUP=PRODUCT_PARAMETERS产品参数v4bdyGiousCORRECTION_METHOD_GAIN_BAND1=CPFCORRECTION_METHOD_GAIN_BAND2=CPFCORRECTION_METHOD_GAIN_BAND3=CPFCORRECTION_METHOD_GAIN_BAND4=CPFCORRECTION_METHOD_GAIN_BAND5=CPFCORRECTION_METHOD_GAIN_BAND61=CPFCORRECTION_METHOD_GAIN_BAND62=CPFCORRECTION_METHOD_GAIN_BAND7=CPFCORRECTION_METHOD_GAIN_BAND8=CPFCORRECTION_METHOD_BIAS=ICBAND1_GAIN=HBAND2_GAIN=HBAND3_GAIN=HBAND4_GAIN=HBAND5_GAIN=HBAND6_GAIN1=LBAND6_GAIN2=HBAND7_GAIN=HBAND8_GAIN=LBAND1_GAIN_CHANGE=0BAND2_GAIN_CHANGE=0BAND3_GAIN_CHANGE=0BAND4_GAIN_CHANGE=0BAND5_GAIN_CHANGE=0BAND6_GAIN_CHANGE1=0BAND6_GAIN_CHANGE2=0BAND7_GAIN_CHANGE=0BAND8_GAIN_CHANGE=0BAND1_SL_GAIN_CHANGE=0BAND2_SL_GAIN_CHANGE=0BAND3_SL_GAIN_CHANGE=09/15BAND4_SL_GAIN_CHANGE=0BAND5_SL_GAIN_CHANGE=0BAND6_SL_GAIN_CHANGE1=0BAND6_SL_GAIN_CHANGE2=0BAND7_SL_GAIN_CHANGE=0BAND8_SL_GAIN_CHANGE=0END_GROUP=PRODUCT_PARAMETERSGROUP=CORRECTIONS_APPLIEDSTRIPING_BAND1=NONESTRIPING_BAND2=NONESTRIPING_BAND3=NONESTRIPING_BAND4=NONESTRIPING_BAND5=NONESTRIPING_BAND61=NONESTRIPING_BAND62=NONESTRIPING_BAND7=NONESTRIPING_BAND8=NONEBANDING=NCOHERENT_NOISE=NMEMORY_EFFECT=NSCAN_CORRELATED_SHIFT=NINOPERABLE_DETECTORS=NDROPPED_LINES=YEND_GROUP=CORRECTIONS_APPLIEDEND_G