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Google Earth Engine ——Landsat 4 TM Collection 1 Tier 1 DN值經過縮放、校準的傳感器輻射度——8天/32天/年際合成資料集

Landsat 4 TM Collection 1 Tier 1 DN values, representing scaled, calibrated at-sensor radiance.

Landsat scenes with the highest available data quality are placed into Tier 1 and are considered suitable for time-series processing analysis. Tier 1 includes Level-1 Precision Terrain (L1TP) processed data that have well-characterized radiometry and are inter-calibrated across the different Landsat sensors. The georegistration of Tier 1 scenes will be consistent and within prescribed tolerances [<=12 m root mean square error (RMSE)]. All Tier 1 Landsat data can be considered consistent and inter-calibrated (regardless of sensor) across the full collection. See more information ​​in the USGS docs​​.

For more information, see ​​USGS Landsat 5 Page

Google Earth Engine ——Landsat 4 TM Collection 1 Tier 1 DN值經過縮放、校準的傳感器輻射度——8天/32天/年際合成資料集

https://www.usgs.gov/centers/eros/science/usgs-eros-archive-landsat-archives-landsat-4-5-thematic-mapper-tm-level-1-data​​

Landsat 4 TM Collection 1 Tier 1 DN值，代表經過縮放、校準的傳感器輻射度。

具有最高可用資料品質的陸地衛星場景被歸入第1級，并被認為适合進行時間序列處理分析。第一級包括一級精确地形（L1TP）處理的資料，這些資料具有良好的輻射測量特性，并在不同的Landsat傳感器之間進行了互相校準。第1級場景的地理注冊将是一緻的，并在規定的公差範圍内[<=12米均方根誤差（RMSE）]。所有第1級Landsat資料都可以被認為是一緻的，并且在整個集合中進行了互相校準（不管是哪個傳感器）。參見USGS文檔中的更多資訊。

更多資訊，見USGS Landsat 5頁面

Dataset Availability

1982-08-22T00:00:00 - 1993-12-14T00:00:00

Dataset Provider

​​USGS​​

Collection Snippet

​

​ee.ImageCollection("LANDSAT/LT04/C01/T1")​

​

Bands Table

Name Description Resolution Wavelength
B1 Blue 30 meters 0.45 - 0.52 µm
B2 Green 30 meters 0.52 - 0.60 µm
B3 Red 30 meters 0.63 - 0.69 µm
B4 Near infrared 30 meters 0.76 - 0.90 µm
B5 Shortwave infrared 1 30 meters 1.55 - 1.75 µm
B6 Thermal Infrared 1. Resampled from 60m to 30m. 30 meters 10.40 - 12.50 µm
B7 Shortwave infrared 2 30 meters 2.08 - 2.35 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: Designated Pixel
  • 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)
Name Type Description
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.
CORRECTION_BIAS_BAND_1 String Internal calibration bias method for band 1.
CORRECTION_BIAS_BAND_2 String Internal calibration bias method for band 2.
CORRECTION_BIAS_BAND_3 String Internal calibration bias method for band 3.
CORRECTION_BIAS_BAND_4 String Internal calibration bias method for band 4.
CORRECTION_BIAS_BAND_5 String Internal calibration bias method for band 5.
CORRECTION_BIAS_BAND_6 String Internal calibration bias method for band 6.
CORRECTION_BIAS_BAND_7 String Internal calibration bias method for band 7.
CORRECTION_GAIN_BAND_1 String Internal calibration gain method for band 1.
CORRECTION_GAIN_BAND_2 String Internal calibration gain method for band 2.
CORRECTION_GAIN_BAND_3 String Internal calibration gain method for band 3.
CORRECTION_GAIN_BAND_4 String Internal calibration gain method for band 4.
CORRECTION_GAIN_BAND_5 String Internal calibration gain method for band 5.
CORRECTION_GAIN_BAND_6 String Internal calibration gain method for band 6.
CORRECTION_GAIN_BAND_7 String Internal calibration gain method for band 7.
CPF_NAME String Calibration parameter file name.
DATA_CATEGORY String Current data category assigned to the data. Possible values: ("NOMINAL", "VALIDATION", "EXCHANGE", "TEST", "ENGINEERING")
DATA_TYPE String Data type identifier. (L1T or L1G)
DATA_TYPE_L0RP String Data type identifier string used to create the L0RP product.
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.
GEOMETRIC_RMSE_VERIFY Double RMSE of the geometric residuals (pixels) in both line and sample directions measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_LL Double RMSE of the geometric residuals (pixels) of the lower-left quadrant measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_LR Double RMSE of the geometric residuals (pixels) of the lower-right quadrant measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_UL Double RMSE of the geometric residuals (pixels) of the upper-left quadrant measured on the terrain-corrected product independently using GLS2000.
GEOMETRIC_RMSE_VERIFY_QUAD_UR Double RMSE of the geometric residuals (pixels) of the upper-right quadrant measured on the terrain-corrected product independently using GLS2000.
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_VERIFY Double The number of ground control points used in the verification of the terrain corrected product. Values: -1 to 1615 (-1 = not available)
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
K1_CONSTANT_BAND_6 Double Calibration constant K1 for Band 6 radiance to temperature conversion.
K2_CONSTANT_BAND_6 Double Calibration constant K2 for Band 6 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.
MAP_PROJECTION_L0RA String L0RA map projection selectively applied to HDTs based on geographic location. Used for processed archive data.
ORIENTATION String Orientation used in creating the image. Values: NOMINAL = Nominal Path, NORTH_UP = North Up, TRUE_NORTH = True North, USER = User
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_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_MULT_BAND_1 Double Multiplicative rescaling factor used to convert calibrated Band 1 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.
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_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_7 Double Multiplicative factor used to convert calibrated Band 7 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.
SATURATION_BAND_1 String Flag indicating saturated pixels for band 1 ('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')
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.
SENSOR_MODE String Operational mode. Scan Angle Monitor (SAM) or BUMPER.
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.
THERMAL_LINES Double Number of product lines for the thermal band.
THERMAL_SAMPLES Double Number of product samples for the thermal band.
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).

使用說明：

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資料集是聯邦建立的資料，是以屬于公共領域，可以在沒有版權限制的情況下使用、轉讓或複制。

對美國地質調查局作為資料來源的鳴謝或信用，應包括一行文字的引用，如下面的例子。

(産品、圖像、照片或資料集名稱）由美國地質調查局提供。

例子。Landsat-7圖像由美國地質調查局提供

請參閱美國地質調查局視覺識别系統指南，了解有關美國地質調查局産品的正确引用和鳴謝的進一步細節。

var dataset = ee.ImageCollection('LANDSAT/LT04/C01/T1_32DAY_NDWI')
                  .filterDate('1989-01-01', '1992-12-31');
var colorized = dataset.select('NDWI');
var colorizedVis = {
  min: 0.0,
  max: 1.0,
  palette: ['0000ff', '00ffff', 'ffff00', 'ff0000', 'ffffff'],
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(colorized, colorizedVis, 'Colorized');      
var dataset = ee.ImageCollection('LANDSAT/LT04/C01/T1_8DAY_RAW')
                  .filterDate('1989-01-01', '1992-12-31');
var dataset = ee.ImageCollection('LANDSAT/LT04/C01/T1_8DAY_RAW');
var visParams = {
  min: 0,
  max: 255,
  gamma: 1.2,
  bands: ['B3', 'B2', 'B1'],
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(dataset, visParams, 'LANDSAT/LT04/C01/T1_8DAY_RAW');      
var dataset = ee.ImageCollection('LANDSAT/LT04/C01/T1_ANNUAL_RAW')
                  .filterDate('1989-01-01', '1992-12-31');
var dataset = ee.ImageCollection('LANDSAT/LT04/C01/T1_ANNUAL_RAW');
var visParams = {
  min: 0,
  max: 255,
  gamma: 1.2,
  bands: ['B3', 'B2', 'B1'],
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(dataset, visParams, 'LANDSAT/LT04/C01/T1_ANNUAL_RAW');
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