小伙伴们用记事本打开下载后的遥感图像中的MEL文件

我这个是landset5的TM影像的MEL文件

GROUP = L1_METADATA_FILE ;
  GROUP = METADATA_FILE_INFO;meta 数
    ORIGIN = "Image courtesy of the U.S. Geological Survey" ;美国地质调查局提供的图片
    REQUEST_ID = "0301006174765_00001"
    PRODUCT_CREATION_TIME = 2010-06-24T12:37:40Z ;产品发布时间
    STATION_ID = "EDC"
    LANDSAT5_XBAND = "1"
    GROUND_STATION = "IKR"
    LPS_PROCESSOR_NUMBER = 0
    DATEHOUR_CONTACT_PERIOD = "0926502"
    SUBINTERVAL_NUMBER = "01"
  END_GROUP = METADATA_FILE_INFO
  GROUP = PRODUCT_METADATA
    PRODUCT_TYPE = "L1T"
    ELEVATION_SOURCE = "GLS2000"
    PROCESSING_SOFTWARE = "LPGS_11.1.0"
    EPHEMERIS_TYPE = "DEFINITIVE"
    SPACECRAFT_ID = "Landsat5"
    SENSOR_ID = "TM" ;                          传感器类型
    SENSOR_MODE = "BUMPER";
    ACQUISITION_DATE = 2009-09-22;          成像日期
    SCENE_CENTER_SCAN_TIME = 02:43:22.2040500Z
    WRS_PATH = 123                                      轨道号
    STARTING_ROW = 32                               开始行号
    ENDING_ROW = 32                                结束行号
    BAND_COMBINATION = "1234567";波段
    PRODUCT_UL_CORNER_LAT = 41.2836004  成像四角的经纬度
    PRODUCT_UL_CORNER_LON = 115.2601261  
    PRODUCT_UR_CORNER_LAT = 41.2901007
    PRODUCT_UR_CORNER_LON = 118.2372726
    PRODUCT_LL_CORNER_LAT = 39.3222493
    PRODUCT_LL_CORNER_LON = 115.3097465
    PRODUCT_LR_CORNER_LAT = 39.3283165
    PRODUCT_LR_CORNER_LON = 118.2019759
    PRODUCT_UL_CORNER_MAPX = 354300.000 四个角的直角坐标
    PRODUCT_UL_CORNER_MAPY = 4571700.000
    PRODUCT_UR_CORNER_MAPX = 603600.000
    PRODUCT_UR_CORNER_MAPY = 4571700.000
    PRODUCT_LL_CORNER_MAPX = 354300.000
    PRODUCT_LL_CORNER_MAPY = 4353900.000
    PRODUCT_LR_CORNER_MAPX = 603600.000
    PRODUCT_LR_CORNER_MAPY = 4353900.000
    PRODUCT_SAMPLES_REF = 8311              近红外图像的列数
    PRODUCT_LINES_REF = 7261                  近红外图像的行数
    PRODUCT_SAMPLES_THM = 8311        热红外图像的列数
    PRODUCT_LINES_THM = 7261                热红外图像的行数
    BAND1_FILE_NAME = "L5123032_03220090922_B10.TIF"  波段名
    BAND2_FILE_NAME = "L5123032_03220090922_B20.TIF"
    BAND3_FILE_NAME = "L5123032_03220090922_B30.TIF"
    BAND4_FILE_NAME = "L5123032_03220090922_B40.TIF"
    BAND5_FILE_NAME = "L5123032_03220090922_B50.TIF"
    BAND6_FILE_NAME = "L5123032_03220090922_B60.TIF"
    BAND7_FILE_NAME = "L5123032_03220090922_B70.TIF"
    GCP_FILE_NAME = "L5123032_03220090922_GCP.txt"
    METADATA_L1_FILE_NAME = "L5123032_03220090922_MTL.txt"  
    CPF_FILE_NAME = "L5CPF20090701_20090930_11"
  END_GROUP = PRODUCT_METADATA
  GROUP = MIN_MAX_RADIANCE     各个波段的最大最小辐射值
    LMAX_BAND1 = 193.000  
    LMIN_BAND1 = -1.520
    LMAX_BAND2 = 365.000
    LMIN_BAND2 = -2.840
    LMAX_BAND3 = 264.000
    LMIN_BAND3 = -1.170
    LMAX_BAND4 = 221.000
    LMIN_BAND4 = -1.510
    LMAX_BAND5 = 30.200
    LMIN_BAND5 = -0.370
    LMAX_BAND6 = 15.303
    LMIN_BAND6 = 1.238
    LMAX_BAND7 = 16.500
    LMIN_BAND7 = -0.150
  END_GROUP = MIN_MAX_RADIANCE
  GROUP = MIN_MAX_PIXEL_VALUE    各个波段最大最小的灰度值
    QCALMAX_BAND1 = 255.0
    QCALMIN_BAND1 = 1.0
    QCALMAX_BAND2 = 255.0
    QCALMIN_BAND2 = 1.0
    QCALMAX_BAND3 = 255.0
    QCALMIN_BAND3 = 1.0
    QCALMAX_BAND4 = 255.0
    QCALMIN_BAND4 = 1.0
    QCALMAX_BAND5 = 255.0
    QCALMIN_BAND5 = 1.0
    QCALMAX_BAND6 = 255.0
    QCALMIN_BAND6 = 1.0
    QCALMAX_BAND7 = 255.0
    QCALMIN_BAND7 = 1.0
  END_GROUP = MIN_MAX_PIXEL_VALUE
  GROUP = PRODUCT_PARAMETERS
    CORRECTION_METHOD_GAIN_BAND1 = "CPF"
    CORRECTION_METHOD_GAIN_BAND2 = "CPF"
    CORRECTION_METHOD_GAIN_BAND3 = "CPF"
    CORRECTION_METHOD_GAIN_BAND4 = "CPF"
    CORRECTION_METHOD_GAIN_BAND5 = "CPF"
    CORRECTION_METHOD_GAIN_BAND6 = "IC"
    CORRECTION_METHOD_GAIN_BAND7 = "CPF"
    CORRECTION_METHOD_BIAS = "IC"
    SUN_AZIMUTH = 149.6001755                                   成像时太阳方位角
    SUN_ELEVATION = 45.7838757                                成像时太阳高度角
    OUTPUT_FORMAT = "GEOTIFF"                             文件保存格式
  END_GROUP = PRODUCT_PARAMETERS
  GROUP = CORRECTIONS_APPLIED
    STRIPING_BAND1 = "NONE"
    STRIPING_BAND2 = "NONE"
    STRIPING_BAND3 = "NONE"
    STRIPING_BAND4 = "NONE"
    STRIPING_BAND5 = "NONE"
    STRIPING_BAND6 = "NONE"
    STRIPING_BAND7 = "NONE"
    BANDING = "N"
    COHERENT_NOISE = "N"
    MEMORY_EFFECT = "Y"
    SCAN_CORRELATED_SHIFT = "Y"
    INOPERABLE_DETECTORS = "N"
    DROPPED_LINES = "N"
  END_GROUP = CORRECTIONS_APPLIED
  GROUP = PROJECTION_PARAMETERS                   投影参数
    REFERENCE_DATUM = "WGS84"                           参考基准面
    REFERENCE_ELLIPSOID = "WGS84"                          参考椭球
    GRID_CELL_SIZE_THM = 30.000                           热红外波段图像尺寸
    GRID_CELL_SIZE_REF = 30.000                             反射波段图像尺寸
    ORIENTATION = "NUP"
    RESAMPLING_OPTION = "CC"
    MAP_PROJECTION = "UTM"                                        地图投影UTM
  END_GROUP = PROJECTION_PARAMETERS
  GROUP = UTM_PARAMETERS
    ZONE_NUMBER = 50                                                                分区号
  END_GROUP = UTM_PARAMETERS
END_GROUP = L1_METADATA_FILE
END

奈斯