Google Earth Engine ——LANDSAT8——TOA系列数据

简介: Google Earth Engine ——LANDSAT8——TOA系列数据

Landsat 8 Collection 1 Tier 1 calibrated top-of-atmosphere (TOA) reflectance. Calibration coefficients are extracted from the image metadata. See Chander et al. (2009) for details on the TOA computation.

Landsat 8 Collection 1 Tier 1校准的大气层顶部(TOA)反射率。校准系数从图像元数据中提取。关于TOA计算的细节,见Chander等人(2009)。

Dataset Availability

2013-04-11T00:00:00 - 2021-09-12T00:00:00

Dataset Provider

USGS/Google

Collection Snippet

ee.ImageCollection("LANDSAT/LC08/C01/T1_TOA")

Bands Table

Name Description Resolution Wavelength
B1 Coastal aerosol 30 meters 0.43 - 0.45 µm
B2 Blue 30 meters 0.45 - 0.51 µm
B3 Green 30 meters 0.53 - 0.59 µm
B4 Red 30 meters 0.64 - 0.67 µm
B5 Near infrared 30 meters 0.85 - 0.88 µm
B6 Shortwave infrared 1 30 meters 1.57 - 1.65 µm
B7 Shortwave infrared 2 30 meters 2.11 - 2.29 µm
B8 Band 8 Panchromatic 15 meters 0.52 - 0.90 µm
B9 Cirrus 15 meters 1.36 - 1.38 µm
B10 Thermal infrared 1, resampled from 100m to 30m 30 meters 10.60 - 11.19 µm
B11 Thermal infrared 2, resampled from 100m to 30m 30 meters 11.50 - 12.51 µm
BQA Landsat Collection 1 QA Bitmask ([See Landsat QA page](https://www.usgs.gov/land-resources/nli/landsat/landsat-collection-1-level-1-quality-assessment-band)) 30 meters
BQA Bitmask
  • Bit 0: Designated Fill
    • 0: No
    • 1: Yes
  • Bit 1: Terrain Occlusion
    • 0: No
    • 1: Yes
  • Bits 2-3: Radiometric Saturation
    • 0: No bands contain saturation
    • 1: 1-2 bands contain saturation
    • 2: 3-4 bands contain saturation
    • 3: 5 or more bands contain saturation
  • Bit 4: Cloud
    • 0: No
    • 1: Yes
  • Bits 5-6: Cloud Confidence
    • 0: Not Determined / Condition does not exist.
    • 1: Low, (0-33 percent confidence)
    • 2: Medium, (34-66 percent confidence)
    • 3: High, (67-100 percent confidence)
  • Bits 7-8: Cloud Shadow Confidence
    • 0: Not Determined / Condition does not exist.
    • 1: Low, (0-33 percent confidence)
    • 2: Medium, (34-66 percent confidence)
    • 3: High, (67-100 percent confidence)
  • Bits 9-10: Snow / Ice Confidence
    • 0: Not Determined / Condition does not exist.
    • 1: Low, (0-33 percent confidence)
    • 2: Medium, (34-66 percent confidence)
    • 3: High, (67-100 percent confidence)
  • Bits 11-12: Cirrus Confidence
    • 0: Not Determined / Condition does not exist.
    • 1: Low, (0-33 percent confidence)
    • 2: Medium, (34-66 percent confidence)
    • 3: High, (67-100 percent confidence)
Name Type Description
BPF_NAME_OLI String The file name for the Bias Parameter File (BPF) used to generate the product, if applicable. This only applies to products that contain OLI bands.
BPF_NAME_TIRS String The file name for the Bias Parameter File (BPF) used to generate the product, if applicable. This only applies to products that contain TIRS bands.
CLOUD_COVER Double Percentage cloud cover (0-100), -1 = not calculated.
CLOUD_COVER_LAND Double Percentage cloud cover over land (0-100), -1 = not calculated.
COLLECTION_CATEGORY String Tier of scene. (T1 or T2)
COLLECTION_NUMBER Double Number of collection.
CPF_NAME String Calibration parameter file name.
DATA_TYPE String Data type identifier. (L1T or L1G)
DATE_ACQUIRED String Image acquisition date. "YYYY-MM-DD"
DATUM String Datum used in image creation.
EARTH_SUN_DISTANCE Double Earth sun distance in astronomical units (AU).
ELEVATION_SOURCE String Elevation model source used for standard terrain corrected (L1T) products.
ELLIPSOID String Ellipsoid used in image creation.
EPHEMERIS_TYPE String Ephemeris data type used to perform geometric correction. (Definitive or Predictive)
FILE_DATE Double File date in milliseconds since epoch.
GEOMETRIC_RMSE_MODEL Double Combined Root Mean Square Error (RMSE) of the geometric residuals (metres) in both across-track and along-track directions measured on the GCPs used in geometric precision correction. Not present in L1G products.
GEOMETRIC_RMSE_MODEL_X Double RMSE of the X direction geometric residuals (in metres) measured on the GCPs used in geometric precision correction. Not present in L1G products.
GEOMETRIC_RMSE_MODEL_Y Double RMSE of the Y direction geometric residuals (in metres) measured on the GCPs used in geometric precision correction. Not present in L1G products.
GRID_CELL_SIZE_PANCHROMATIC Double Grid cell size used in creating the image for the panchromatic band.
GRID_CELL_SIZE_REFLECTIVE Double Grid cell size used in creating the image for the reflective band.
GRID_CELL_SIZE_THERMAL Double Grid cell size used in creating the image for the thermal band.
GROUND_CONTROL_POINTS_MODEL Double The number of ground control points used. Not used in L1GT products. Values: 0 - 999 (0 is used for L1T products that have used Multi-scene refinement).
GROUND_CONTROL_POINTS_VERSION Double The number of ground control points used in the verification of the terrain corrected product. Values: -1 to 1615 (-1 = not available)
IMAGE_QUALITY Double Image quality, 0 = worst, 9 = best, -1 = quality not calculated
IMAGE_QUALITY_OLI Double The composite image quality for the OLI bands. Values: 9 = Best. 1 = Worst. 0 = Image quality not calculated. This parameter is only present if OLI bands are present in the product.
IMAGE_QUALITY_TIRS Double The composite image quality for the TIRS bands. Values: 9 = Best. 1 = Worst. 0 = Image quality not calculated. This parameter is only present if OLI bands are present in the product.
K1_CONSTANT_BAND_10 Double Calibration K1 constant for Band 10 radiance to temperature conversion.
K1_CONSTANT_BAND_11 Double Calibration K1 constant for Band 11 radiance to temperature conversion.
K2_CONSTANT_BAND_10 Double Calibration K2 constant for Band 10 radiance to temperature conversion.
K2_CONSTANT_BAND_11 Double Calibration K2 constant for Band 11 radiance to temperature conversion.
LANDSAT_PRODUCT_ID String The naming convention of each Landsat Collection 1 Level-1 image based on acquisition parameters and processing parameters. Format: LXSS_LLLL_PPPRRR_YYYYMMDD_yyyymmdd_CC_TX * L = Landsat * X = Sensor (O = Operational Land Imager, T = Thermal Infrared Sensor, C = Combined OLI/TIRS) * SS = Satellite (08 = Landsat 8) * LLLL = Processing Correction Level (L1TP = precision and terrain, L1GT = systematic terrain, L1GS = systematic) * PPP = WRS Path * RRR = WRS Row * YYYYMMDD = Acquisition Date expressed in Year, Month, Day * yyyymmdd = Processing Date expressed in Year, Month, Day * CC = Collection Number (01) * TX = Collection Category (RT = Real Time, T1 = Tier 1, T2 = Tier 2)
LANDSAT_SCENE_ID String The Pre-Collection naming convention of each image is based on acquisition parameters. This was the naming convention used prior to Collection 1. Format: LXSPPPRRRYYYYDDDGSIVV * L = Landsat * X = Sensor (O = Operational Land Imager, T = Thermal Infrared Sensor, C = Combined OLI/TIRS) * S = Satellite (08 = Landsat 8) * PPP = WRS Path * RRR = WRS Row * YYYY = Year of Acquisition * DDD = Julian Day of Acquisition * GSI = Ground Station Identifier * VV = Version
MAP_PROJECTION String Projection used to represent the 3-dimensional surface of the earth for the Level-1 product.
NADIR_OFFNADIR String Nadir or Off-Nadir condition of the scene.
ORIENTATION String Orientation used in creating the image. Values: NOMINAL = Nominal Path, NORTH_UP = North Up, TRUE_NORTH = True North, USER = User
PANCHROMATIC_LINES Double Number of product lines for the panchromatic band.
PANCHROMATIC_SAMPLES Double Number of product samples for the panchromatic bands.
PROCESSING_SOFTWARE_VERSION String Name and version of the processing software used to generate the L1 product.
RADIANCE_ADD_BAND_1 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 1.
RADIANCE_ADD_BAND_10 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 10.
RADIANCE_ADD_BAND_11 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 11.
RADIANCE_ADD_BAND_2 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 2.
RADIANCE_ADD_BAND_3 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 3.
RADIANCE_ADD_BAND_4 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 4.
RADIANCE_ADD_BAND_5 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 5.
RADIANCE_ADD_BAND_6 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 6.
RADIANCE_ADD_BAND_7 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 7.
RADIANCE_ADD_BAND_8 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 8.
RADIANCE_ADD_BAND_9 Double Additive rescaling factor used to convert calibrated DN to radiance for Band 9.
RADIANCE_MULT_BAND_1 Double Multiplicative rescaling factor used to convert calibrated Band 1 DN to radiance.
RADIANCE_MULT_BAND_10 Double Multiplicative rescaling factor used to convert calibrated Band 10 DN to radiance.
RADIANCE_MULT_BAND_11 Double Multiplicative rescaling factor used to convert calibrated Band 11 DN to radiance.
RADIANCE_MULT_BAND_2 Double Multiplicative rescaling factor used to convert calibrated Band 2 DN to radiance.
RADIANCE_MULT_BAND_3 Double Multiplicative rescaling factor used to convert calibrated Band 3 DN to radiance.
RADIANCE_MULT_BAND_4 Double Multiplicative rescaling factor used to convert calibrated Band 4 DN to radiance.
RADIANCE_MULT_BAND_5 Double Multiplicative rescaling factor used to convert calibrated Band 5 DN to radiance.
RADIANCE_MULT_BAND_6 Double Multiplicative rescaling factor used to convert calibrated Band 6 DN to radiance.
RADIANCE_MULT_BAND_7 Double Multiplicative rescaling factor used to convert calibrated Band 7 DN to radiance.
RADIANCE_MULT_BAND_8 Double Multiplicative rescaling factor used to convert calibrated Band 8 DN to radiance.
RADIANCE_MULT_BAND_9 Double Multiplicative rescaling factor used to convert calibrated Band 9 DN to radiance.
REFLECTANCE_ADD_BAND_1 Double Additive rescaling factor used to convert calibrated Band 1 DN to reflectance.
REFLECTANCE_ADD_BAND_2 Double Additive rescaling factor used to convert calibrated Band 2 DN to reflectance.
REFLECTANCE_ADD_BAND_3 Double Additive rescaling factor used to convert calibrated Band 3 DN to reflectance.
REFLECTANCE_ADD_BAND_4 Double Additive rescaling factor used to convert calibrated Band 4 DN to reflectance.
REFLECTANCE_ADD_BAND_5 Double Additive rescaling factor used to convert calibrated Band 5 DN to reflectance.
REFLECTANCE_ADD_BAND_7 Double Multiplicative factor used to convert calibrated Band 7 DN to reflectance.
REFLECTANCE_ADD_BAND_8 Double Multiplicative factor used to convert calibrated Band 8 DN to reflectance.
REFLECTANCE_ADD_BAND_9 Double Minimum achievable spectral reflectance value for Band 8.
REFLECTANCE_MULT_BAND_1 Double Multiplicative factor used to convert calibrated Band 1 DN to reflectance.
REFLECTANCE_MULT_BAND_2 Double Multiplicative factor used to convert calibrated Band 2 DN to reflectance.
REFLECTANCE_MULT_BAND_3 Double Multiplicative factor used to convert calibrated Band 3 DN to reflectance.
REFLECTANCE_MULT_BAND_4 Double Multiplicative factor used to convert calibrated Band 4 DN to reflectance.
REFLECTANCE_MULT_BAND_5 Double Multiplicative factor used to convert calibrated Band 5 DN to reflectance.
REFLECTANCE_MULT_BAND_6 Double Multiplicative factor used to convert calibrated Band 6 DN to reflectance.
REFLECTANCE_MULT_BAND_7 Double Multiplicative factor used to convert calibrated Band 7 DN to reflectance.
REFLECTANCE_MULT_BAND_8 Double Multiplicative factor used to convert calibrated Band 8 DN to reflectance.
REFLECTANCE_MULT_BAND_9 Double Multiplicative factor used to convert calibrated Band 9 DN to reflectance.
REFLECTIVE_LINES Double Number of product lines for the reflective bands.
REFLECTIVE_SAMPLES Double Number of product samples for the reflective bands.
REQUEST_ID String Request id, nnnyymmdd0000_0000 * nnn = node number * yy = year * mm = month * dd = day
RESAMPLING_OPTION String Resampling option used in creating the image.
RLUT_FILE_NAME String The file name for the Response Linearization Lookup Table (RLUT) used to generate the product, if applicable.
ROLL_ANGLE Double The amount of spacecraft roll angle at the scene center.
SATURATION_BAND_1 String Flag indicating saturated pixels for band 1 ('Y'/'N')
SATURATION_BAND_10 String Flag indicating saturated pixels for band 10 ('Y'/'N')
SATURATION_BAND_11 String Flag indicating saturated pixels for band 11 ('Y'/'N')
SATURATION_BAND_2 String Flag indicating saturated pixels for band 2 ('Y'/'N')
SATURATION_BAND_3 String Flag indicating saturated pixels for band 3 ('Y'/'N')
SATURATION_BAND_4 String Flag indicating saturated pixels for band 4 ('Y'/'N')
SATURATION_BAND_5 String Flag indicating saturated pixels for band 5 ('Y'/'N')
SATURATION_BAND_6 String Flag indicating saturated pixels for band 6 ('Y'/'N')
SATURATION_BAND_7 String Flag indicating saturated pixels for band 7 ('Y'/'N')
SATURATION_BAND_8 String Flag indicating saturated pixels for band 8 ('Y'/'N')
SATURATION_BAND_9 String Flag indicating saturated pixels for band 9 ('Y'/'N')
SCENE_CENTER_TIME String Scene center time of acquired image. HH:MM:SS.SSSSSSSZ * HH = Hour (00-23) * MM = Minutes * SS.SSSSSSS = Fractional seconds * Z = "Zulu" time (same as GMT)
SENSOR_ID String Sensor used to capture data.
SPACECRAFT_ID String Spacecraft identification.
STATION_ID String Ground Station/Organisation that received the data.
SUN_AZIMUTH Double Sun azimuth angle in degrees for the image center location at the image centre acquisition time.
SUN_ELEVATION Double Sun elevation angle in degrees for the image center location at the image centre acquisition time.
TARGET_WRS_PATH Double Nearest WRS-2 path to the line-of-sight scene center of the image.
TARGET_WRS_ROW Double Nearest WRS-2 row to the line-of-sight scene center of the image. Rows 880-889 and 990-999 are reserved for the polar regions where it is undefined in the WRS-2.
THERMAL_LINES Double Number of product lines for the thermal band.
THERMAL_SAMPLES Double Number of product samples for the thermal band.
TIRS_SSM_MODEL String Due to an anomalous condition on the Thermal Infrared Sensor (TIRS) Scene Select Mirror (SSM) encoder electronics, this field has been added to indicate which model was used to process the data. (Actual, Preliminary, Final)
TIRS_SSM_POSITION_STATUS String TIRS SSM position status.
TIRS_STRAY_LIGHT_CORRECTION_SOURCE String TIRS stray light correction source.
TRUNCATION_OLI String Region of OLCI truncated.
UTM_ZONE Double UTM zone number used in product map projection.
WRS_PATH Double The WRS orbital path number (001 - 251).
WRS_ROW Double Landsat satellite WRS row (001-248).

使用说明:

Landsat datasets are federally created data and therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.

Acknowledgement or credit of the USGS as data source should be provided by including a line of text citation such as the example shown below.

(Product, Image, Photograph, or Dataset Name) courtesy of the U.S. Geological Survey

Example: Landsat-7 image courtesy of the U.S. Geological Survey

See the USGS Visual Identity System Guidance for further details on proper citation and acknowledgement of USGS products.

Landsat数据集是联邦创建的数据,因此属于公共领域,可以在没有版权限制的情况下使用、转让或复制。

对美国地质调查局作为数据来源的确认或信用,应通过包括一行文字引用来提供,如下面的例子。

(产品、图像、照片或数据集名称)由美国地质调查局提供。

例子。Landsat-7图像由美国地质调查局提供

请参阅美国地质调查局视觉识别系统指南,了解有关美国地质调查局产品的正确引用和鸣谢的进一步细节。

代码:

var dataset = ee.ImageCollection('LANDSAT/LC08/C01/T1_ANNUAL_TOA')
                  .filterDate('2017-01-01', '2017-12-31');
var trueColor = dataset.select(['B4', 'B3', 'B2']);
var trueColorVis = {
  min: 0,
  max: 0.4,
  gamma: 1.2,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(trueColor, trueColorVis, 'True Color (432)');

代码:

var dataset = ee.ImageCollection('LANDSAT/LC08/C01/T1_8DAY_TOA')
                  .filterDate('2017-01-01', '2017-12-31');
var trueColor = dataset.select(['B4', 'B3', 'B2']);
var trueColorVis = {
  min: 0,
  max: 0.4,
  gamma: 1.2,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(trueColor, trueColorVis, 'True Color (432)');
var dataset = ee.ImageCollection('LANDSAT/LC08/C01/T1_32DAY_TOA')
                  .filterDate('2017-01-01', '2017-12-31');
var trueColor = dataset.select(['B4', 'B3', 'B2']);
var trueColorVis = {
  min: 0,
  max: 0.4,
  gamma: 1.2,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(trueColor, trueColorVis, 'True Color (432)');


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