非均質
- 方向性相關
crs
- 座標參考系統。座標系統,由相關機構 (例如 EPSG 或 SR-ORG) 定義,指定為字串,且機構和代碼之間以半形冒號分隔,例如
'EPSG:4326'
。 crs_transform
crs
的後置轉換,定義為以列優先順序排列的仿射轉換參數清單 [xScale、xShearing、xTranslation、yShearing、yScale、yTranslation]。詳情請參閱這份參考資料。DEM
- 數位高程模型
數位原生
- 數位號碼
DOY
- Day Of Year
FIRMS
- 火災 資源管理系統資訊
google:registration_count
- 圖片中繼資料屬性,用於指出與已知已準確註冊的參考圖片位置一致的點數。大於 1000 的數字表示比對結果良好。
google:registration_offset_*
- 圖片與已知已準確註冊的參考圖片之間的測量偏移量 (以公尺為單位)。
等向性
- 與方向無關
MODIS
- 中等解析度成像光譜輻射計
NIR
- 近紅外線
NDVI
- 常態化差異植被指數。(近紅外線 - 紅色) / (近紅外線 + 紅色)
NDWI
- 歸一化水差異指數。 (綠色 - 近紅外線) / (綠色 + 近紅外線)
悲傷
- Sistema de Alerta de Desmatamento
SD 標準畫質
- 標準差
system:time_start
- 自 UNIX 紀元起算的 Earth Engine 時間戳記 (以毫秒為單位)。詳情請參閱這個連結。單一場景的時間戳記會設為名義上的影像擷取時間。這個值會設為時間複合項的名義複合開始時間。
system:time_end
- 查看系統:time_start。 單一場景的結束時間戳記會設為名義上的影像擷取時間。對於 MODIS 時間複合資料,這項設定為名義複合資料結束期間隔天的午夜。
美國地質調查局
- 美國地質調查局
WRI
- 世界資源研究所
詞彙解釋
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上次更新時間:2025-07-26 (世界標準時間)。
[null,null,["上次更新時間:2025-07-26 (世界標準時間)。"],[[["\u003cp\u003eThis glossary defines common terms and acronyms (like NDVI, DEM, and MODIS) encountered in Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eIt explains technical metadata properties such as \u003ccode\u003ecrs\u003c/code\u003e, \u003ccode\u003ecrs_transform\u003c/code\u003e, and \u003ccode\u003esystem:time_start\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eIt includes links to external resources for further information on certain topics like FIRMS and SAD.\u003c/p\u003e\n"],["\u003cp\u003eThe glossary covers concepts related to image properties (isotropic, anisotropic) and data quality (registration).\u003c/p\u003e\n"]]],[],null,["# Glossary\n\n### Anisotropic\n\n: Directionally dependent\n\n### `crs`\n\n: Coordinate Reference System. A coordinate system, as defined by a relevant authority\n such as [EPSG](http://epsg.io/) or\n [SR-ORG](http://spatialreference.org/), specified as a string with the\n authority and the code separated by a colon, for example `'EPSG:4326'`.\n\n### `crs_transform`\n\n: A post transform for a `crs`, defined as a\n list of affine transformation parameters in row-major order \\[xScale, xShearing,\n xTranslation, yShearing, yScale, yTranslation\\]. See\n [this\n reference](https://docs.oracle.com/javase/8/docs/api/java/awt/geom/AffineTransform.html) for more information.\n\n### DEM\n\n: Digital Elevation Model\n\n### DN\n\n: Digital Number\n\n### DOY\n\n: Day Of Year\n\n### FIRMS\n\n: [Fire\n Information for Resource Management System](https://earthdata.nasa.gov/earth-observation-data/near-real-time/firms)\n\n### google:registration_count\n\n: An image metadata property for the number of points found to be positionally consistent\n with a reference image known to be accurately registered. Numbers greater than 1000\n indicate a good match.\n\n### google:registration_offset_\\*\n\n: The measured offset, in meters, between the image and a reference image known to be\n accurately registered.\n\n### Isotropic\n\n: Independent of direction\n\n### MODIS\n\n: [MODerate resolution Imaging Spectro-radiometer](http://modis.gsfc.nasa.gov/)\n\n### NIR\n\n: Near Infra-Red\n\n### NDVI\n\n: Normalized Difference Vegetation Index. (NIR - red) / (NIR + red)\n\n### NDWI\n\n: Normalized Difference Water Index. (green - NIR) / (green + NIR)\n\n### SAD\n\n: [Sistema\n de Alerta de Desmatamento](http://imazon.org.br/imprensa/sistema-de-alerta-de-desmatamento-sad-operacional-na-plataforma-google-earth-engine/)\n\n### SD\n\n: Standard Deviation\n\n### `system:time_start`\n\n: The Earth Engine time stamp in milliseconds since the UNIX epoch. See\n [this link](https://en.wikipedia.org/wiki/Unix_time) for more information.\n The time stamp is set to the nominal image acquisition time for single scenes. It is set\n to the nominal composite start period for temporal composites.\n\n### `system:time_end`\n\n: See system:time_start. The ending time stamp is set to the nominal image acquisition\n time for single scenes. It is set to midnight on the day after the nominal composite\n end period for MODIS temporal composites.\n\n### USGS\n\n: [United States Geological Survey](http://www.usgs.gov/)\n\n### WRI\n\n: [World Resources Institute](http://www.wri.org/)"]]