[TOC] # Datacube Importing Service ## 功能需求 - 將Sentinel跟Landsat影像透過自動抓取的方式更新到Datacube(Rasdaman) ## 使用工具 <details> <summary>原廠提供匯入工具支援Sentinel的影像，如S1-GRD, S2-L2A, S3-OLCI, S5P以及另外的大氣分析數據ERA5共5種, Landsat必須由我們再擴展功能才能支援</summary> <summary>S1-GRD</summary> S1: 哨兵1號（Sentinel-1）衛星，是歐空局哥白尼計劃的一部分。它主要用於全天候、全天時的雷達成像。 GRD: Ground Range Detected，地面距離檢測產品。這是經過處理後的雷達影像，具有一定的幾何校正和放射校正。 哨兵1號衛星的主要特點： 使用C波段合成孔徑雷達（SAR）。 提供高分辨率的雷達影像。 主要用於地表變形監測、海洋監測、冰川和極地冰蓋監測等。 <summary>S2-L2A</summary> S2: 哨兵2號（Sentinel-2）衛星，是歐空局哥白尼計劃的一部分。它主要用於陸地和沿海區域的光學成像。 L2A: Level-2A產品，表示已進行大氣校正的地表反射率數據。 哨兵2號衛星的主要特點： 提供高分辨率多光譜影像（10米至60米分辨率）。 覆蓋13個光譜波段。 主要用於農業、森林監測、水體監測、土地覆蓋和災害管理等應用。 <summary>S3-OLCI</summary> S3: 哨兵3號（Sentinel-3）衛星，是歐空局哥白尼計劃的一部分。它旨在提供海洋和陸地表面監測數據。 OLCI: Ocean and Land Colour Instrument，海洋和陸地顏色儀器，是哨兵3號上的一個光學成像儀器，用於測量海洋和陸地表面的顏色。 哨兵3號衛星和OLCI儀器的主要特點： 提供寬覆蓋範圍（寬達1270公里的成像寬度）。 覆蓋21個光譜波段。 主要用於海洋水質監測、陸地植被狀態監測、大氣成分分析等。 <summary>S5P</summary> S5P: 哨兵5P（Sentinel-5 Precursor）衛星，主要用於監測大氣成分，特別是氣體污染物。 TROPOMI: Tropospheric Monitoring Instrument，對流層監測儀器，是S5P上的主要儀器。 哨兵5P衛星的主要特點： 監測對流層中的各種氣體，如臭氧、二氧化氮、二氧化硫、甲烷和一氧化碳。 用於空氣質量監測、氣候研究和健康影響分析。 <summary>ERA5</summary> ERA5: 由歐洲中期天氣預報中心（ECMWF）提供的第五代大氣再分析數據集。 再分析數據集通過將歷史天氣觀測數據與數值天氣預報模型相結合，提供了一個一致的全球氣象記錄。 ERA5的主要特點： 提供高分辨率的全球氣象數據（水平分辨率約為31公里）。 時間分辨率高（每小時一次的數據）。 包含大量氣象變量，如溫度、降水、風速、濕度等。 用於氣候監測、天氣預報、環境研究和風險管理等。 </details> ## 影像來源 - https://dataspace.copernicus.eu/ - 提供多種地球觀測數據(Earth Observation Data, EOData) - ![](https://note.geosense.tw/uploads/upload_fe837fa638abb54774b1c1d0efd64b51.png) - 有申請帳號介接API ## 介接狀況 - 目前實作介接S1-GRD的資料, 可以將資料從平台上下載至Rasdaman, 但後半段的匯入動作, 沒有執行成功 - 實際匯入時的command log ```shell= administrator@ubuntu-122-80:~/gisfcu/tools$ ./dataservice_import.sh ./profile/example_profile.toml ./log.txt dataservice_import.sh: all output is also written to ./log.txt Parsed profile: Service: rasdias Products: {'s1-grd': {'cov_id': 'S1_GRDH_IW_HH', 'cov_id_regex_pattern': 'S1_GRD._[EIS].*', 'cov_id_suffix': '', 'list_files': True, 'preprocess_files': True, 'downscale_files': True, 'import_pyramids': True, 'import_base_coverages': True, 'generate_ingredients': True, 'upload_files': False, 'upload_hosts': ['user@host'], 'delete_files': False, 'import_timeout': 1800, 'overviewsdir': '/home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/', 'external_overview_levels': [2, 3, 4, 5, 6, 7], 'nested_pyramid_levels': [], 'vrtdir': '/home/administrator/gisfcu/tools/data/geo/Sentinel-1/grd/', 'resolution_iw': '0.0001', 'resolution_ew_h': '0.0005', 'resolution_ew_m': '0.001', 'resolution_sm': '0.0001', 'modebeams': ['IW'], 'polarisations': ['HH'], 'from_date': '2015-01-30', 'to_date': '2015-01-30'}} Workdir: /home/administrator/gisfcu/tools/data/import/ Rmanhome: /opt/rasdaman/ Petascope: http://localhost:8080/rasdaman/ows Creds: /home/administrator/gisfcu/tools/cfg/.rasadmin_credentials User: rasadmin Dry run: False Hostname: ubuntu-122-80 ################################################################################ Updating s1-grd datacubes ################################################################################ Import will start from the configured from_date 2015-01-30. Import will end with the configured to_date 2015-01-30. removing existing directory /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths/ removing existing directory /home/administrator/gisfcu/tools/data/import/s1-grd/ingredients/ removing existing directory /home/administrator/gisfcu/tools/data/import/s1-grd/tmp/ ================================================================================ Importing date 2015-01-30 ... ================================================================================ 2015-01-30 Starting: list files in /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths/2015_01_30.txt ... catalog search criteria: {'productType': 'S1_SAR_GRD', 'start': '2015-01-30', 'end': '2015-01-31', 'items_per_page': 1000, 'geom': {'lonmin': -7.876046, 'latmin': 36.78478, 'lonmax': -1.171323, 'latmax': 43.270077}} catalog returned 3 scenes. removing duplicates resulted in 3 scenes. filtering resulted in 3 scenes. processing resulted in 3 scenes. filtering resulted in 3 scenes. 2015-01-30 Finished: list 6 files of total size 5.4 GB in /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths/2015_01_30.txt in 5.73 s. 2015-01-30 Starting: generate VRT files in /home/administrator/gisfcu/tools/data/geo/Sentinel-1/grd/2015/01/30/ ... Total size of VRTs: 360.7 KB 2015-01-30 Finished: generate VRT files in /home/administrator/gisfcu/tools/data/geo/Sentinel-1/grd/2015/01/30/ in 0.17 s. -------------------------------------------------------------------------------- 2015-01-30 Starting: create overviews in /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/ ... Collected 11 VRT files to downscale. Downscaling VRTs in parallel with 4 processes. Downloaded in 1.47 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T064145_20150130T064210_004397_0055F0_7CA0.SAFE/measurement/s1a-iw-grd-vh-20150130t064145-20150130t064210-004397-0055f0-002.tiff Downloaded in 1.47 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T050304_20150130T050329_004396_0055E9_BF26.SAFE/measurement/s1a-iw-grd-vh-20150130t050304-20150130t050329-004396-0055e9-002.tiff Downloaded in 1.48 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T064210_20150130T064235_004397_0055F0_07C8.SAFE/measurement/s1a-iw-grd-vh-20150130t064210-20150130t064235-004397-0055f0-002.tiff Downloaded in 1.64 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T064116_20150130T064145_004397_0055F0_512D.SAFE/measurement/s1a-iw-grd-vh-20150130t064116-20150130t064145-004397-0055f0-002.tiff 1 / 11 - top pyramid level of size 6.9 MB generated in 1.83 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/s1a-iw-grd-vh-20150130t050304-20150130t050329-004396-0055e9-002_GRDH_DV_warp.tif_8 1 / 11 - downscaled to 5 levels in 1.41 s 2 / 11 - top pyramid level of size 8.8 MB generated in 2.09 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/s1a-iw-grd-vh-20150130t064116-20150130t064145-004397-0055f0-002_GRDH_DV_warp.tif_8 2 / 11 - downscaled to 5 levels in 0.96 s 3 / 11 - top pyramid level of size 7.4 MB generated in 1.83 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/s1a-iw-grd-vh-20150130t064145-20150130t064210-004397-0055f0-002_GRDH_DV_warp.tif_8 3 / 11 - downscaled to 5 levels in 0.91 s 4 / 11 - top pyramid level of size 6.8 MB generated in 1.82 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/s1a-iw-grd-vh-20150130t064210-20150130t064235-004397-0055f0-002_GRDH_DV_warp.tif_8 4 / 11 - downscaled to 5 levels in 0.91 s Downloaded in 1.45 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T032440_20150130T032505_004395_0055E2_D768.SAFE/measurement/s1a-iw-grd-vv-20150130t032440-20150130t032505-004395-0055e2-001.tiff Downloaded in 1.45 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T050304_20150130T050329_004396_0055E9_BF26.SAFE/measurement/s1a-iw-grd-vv-20150130t050304-20150130t050329-004396-0055e9-001.tiff Downloaded in 1.71 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T174416_20150130T174445_004404_005617_40DE.SAFE/measurement/s1a-iw-grd-vh-20150130t174416-20150130t174445-004404-005617-002.tiff Downloaded in 1.67 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T064116_20150130T064145_004397_0055F0_512D.SAFE/measurement/s1a-iw-grd-vv-20150130t064116-20150130t064145-004397-0055f0-001.tiff 5 / 11 - top pyramid level of size 7.5 MB generated in 2.11 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/s1a-iw-grd-vh-20150130t174416-20150130t174445-004404-005617-002_GRDH_DV_warp.tif_8 5 / 11 - downscaled to 5 levels in 0.88 s 6 / 11 - top pyramid level of size 8.9 MB generated in 1.83 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/s1a-iw-grd-vv-20150130t032440-20150130t032505-004395-0055e2-001_GRDH_DV_warp.tif_8 6 / 11 - downscaled to 5 levels in 0.93 s 7 / 11 - top pyramid level of size 8.9 MB generated in 1.80 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/s1a-iw-grd-vv-20150130t050304-20150130t050329-004396-0055e9-001_GRDH_DV_warp.tif_8 7 / 11 - downscaled to 5 levels in 0.93 s 8 / 11 - top pyramid level of size 12.3 MB generated in 2.12 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/s1a-iw-grd-vv-20150130t064116-20150130t064145-004397-0055f0-001_GRDH_DV_warp.tif_8 8 / 11 - downscaled to 5 levels in 1.04 s Downloaded in 1.41 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T064145_20150130T064210_004397_0055F0_7CA0.SAFE/measurement/s1a-iw-grd-vv-20150130t064145-20150130t064210-004397-0055f0-001.tiff Downloaded in 1.44 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T064210_20150130T064235_004397_0055F0_07C8.SAFE/measurement/s1a-iw-grd-vv-20150130t064210-20150130t064235-004397-0055f0-001.tiff 9 / 11 - top pyramid level of size 9.6 MB generated in 1.76 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/s1a-iw-grd-vv-20150130t064145-20150130t064210-004397-0055f0-001_GRDH_DV_warp.tif_8 9 / 11 - downscaled to 5 levels in 0.94 s 10 / 11 - top pyramid level of size 9.2 MB generated in 1.77 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/s1a-iw-grd-vv-20150130t064210-20150130t064235-004397-0055f0-001_GRDH_DV_warp.tif_8 10 / 11 - downscaled to 5 levels in 0.95 s Downloaded in 1.67 m: s3://eodata/Sentinel-1/SAR/GRD/2015/01/30/S1A_IW_GRDH_1SDV_20150130T174416_20150130T174445_004404_005617_40DE.SAFE/measurement/s1a-iw-grd-vv-20150130t174416-20150130t174445-004404-005617-001.tiff 11 / 11 - top pyramid level of size 9.3 MB generated in 2.07 m: /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/s1a-iw-grd-vv-20150130t174416-20150130t174445-004404-005617-001_GRDH_DV_warp.tif_8 11 / 11 - downscaled to 5 levels in 0.96 s Total size of downscaled files: 127.5 MB 2015-01-30 Finished: create overviews in /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/ in 6.02 m. -------------------------------------------------------------------------------- 2015-01-30 Starting: merge overviews in /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/ ... Merged 6 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/8/merged.tif in 3.35 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/8/merged.tif in 11.59 s, removing it. Merged 5 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/8/merged.tif in 2.86 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/8/merged.tif in 7.56 s, removing it. Merged 6 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/16/merged.tif in 0.98 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/16/merged.tif in 3.48 s, removing it. Merged 5 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/16/merged.tif in 0.88 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/16/merged.tif in 2.10 s, removing it. Merged 6 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/32/merged.tif in 0.42 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/32/merged.tif in 1.02 s, removing it. Merged 5 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/32/merged.tif in 0.38 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/32/merged.tif in 0.67 s, removing it. Merged 6 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/64/merged.tif in 0.28 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/64/merged.tif in 0.35 s, removing it. Merged 5 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/64/merged.tif in 0.25 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/64/merged.tif in 0.25 s, removing it. Merged 6 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/128/merged.tif in 0.22 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/128/merged.tif in 0.16 s, removing it. Merged 5 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/128/merged.tif in 0.20 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/128/merged.tif in 0.14 s, removing it. Merged 6 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/256/merged.tif in 0.20 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VV/256/merged.tif in 0.12 s, removing it. Merged 5 files into /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/256/merged.tif in 0.21 s, removing input files. Retiled /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/S1_GRDH_IW_DV_VH/256/merged.tif in 0.10 s, removing it. Total size of merged overviews: 128.7 MB 2015-01-30 Finished: merge overviews in /home/administrator/gisfcu/tools/data_big/geo/Sentinel-1/GRD/overviews/2015/01/30/ in 37.91 s. -------------------------------------------------------------------------------- 2015-01-30 Starting: generate all ingredients ... 2015-01-30 Starting: collect filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDH_DH_HH.txt ... Empty filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDH_DH_HH.txt, skipping. 2015-01-30 Starting: collect filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDM_DH_HH.txt ... Empty filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDM_DH_HH.txt, skipping. 2015-01-30 Starting: collect filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDH_DV_HH.txt ... Empty filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDH_DV_HH.txt, skipping. 2015-01-30 Starting: collect filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDM_DV_HH.txt ... Empty filepaths /home/administrator/gisfcu/tools/data/import/s1-grd/filepaths_warped/2015-01-30_GRDM_DV_HH.txt, skipping. 2015-01-30 Finished: generate all ingredients in 0.01 s. No ingredient files matching *.json in /home/administrator/gisfcu/tools/data/import/s1-grd/ingredients/ found to import. ================================================================================ Importing date 2015-01-30 done in 6.75 m. ================================================================================ Clearing temporary files... No temporary files to remove. ================================================================================ Updated s1-grd datacubes in 6.75 m. ``` - 11個VRT檔案截圖 ![](https://note.geosense.tw/uploads/upload_51ac32c8e9cacc564ddbc3e70c3338c5.png) - downscale截圖 ![](https://note.geosense.tw/uploads/upload_133a1ebd2352297f8a4afed841a1b2ac.png) - 準備好的tiff準備匯入 ![](https://note.geosense.tw/uploads/upload_901be297ebe5e0df54e18342eaa2b275.png) - 後續處理: 1.為何後續的匯入流程沒有執行 2.繼續將討論後要匯入的影像實作自動匯入, 實務上必須by不同得影像類型去實作 ![](https://note.geosense.tw/uploads/upload_c4bab74291ed849753b3f880d95a828f.png) ## 討論事項 - 需要先匯入那些影像? - 時間?頻率? - 影像範圍? - 空間?放哪台 - 有太多條件可以下了 - SATELLITE PLATFORM - Sentinel-1A (operational since 2014) and Sentinel-1B (operational from 2016 to 2022 - ORBIT DIRECTION - 下降軌道（飛行方向：北 - 南）還是上升軌道 - RELATIVE ORBIT NUMBER - 軌道號。Sentinel-1衛星處於接近極地的太陽同步軌道，重複周期為12天，每個周期包含175個軌道（針對單顆衛星）。 - ACQUISITION MODE - Stripmap (SM): 條帶模式 Interferometric Wide swath (IW): 干涉寬幅模式 Extra-Wide swath (EW): 超寬幅模式 Wave (WV): 波浪模式 - BEAM ID - S1-S6 用於條帶模式 (SM 模式) IW1-IW3 用於干涉寬幅模式 (IW 模式) EW1-EW5 用於超寬幅模式 (EW 模式) WV1-WV2 用於波浪模式 (WV 模式) - POLARISATION - HH 極化: 例如，在城市區域監測中，可以識別並分析建築物和其他金屬結構。 VV 極化: 例如，在農業監測中，可以觀察農田和植被的生長狀況。 VV+VH 極化: 例如，在混合地表監測中，可以更好地區分和識別不同地表特徵，如森林中的不同樹種。 HH+HV 極化: 例如，在農業和森林監測中，可以更全面地了解地表結構和材料的多樣性。 - PRODUCT AVAILABILITY - 都選Immediate, 沒有要下單訂購 ![](https://note.geosense.tw/uploads/upload_324c674a9dc256e2285a3826361f905c.png)