2007年10月17日夜间，在峨堡样方1和峨堡样方2开展了Envisat ASAR数据的地面同步观测试验。Envisat ASAR数据为AP模式，VV/VH极化组合方式，过境时间约为23:04BJT。峨堡样方1和峨堡样方2均为3Grid×3Grid，每个Grid为30m×30m正方形，共计25个采样点（包含中心点和角点）。与卫星过境同步在每个采样点，采用WET土壤水分速测仪测量土壤体积含水量、土壤电导率、土壤温度及土壤复介电常数实部；采用手持式红外温度计获得地表辐射温度；并用环刀取土经烘干获得重量含水量、土壤容重及体积含水量。同时还对植被参数进行了相关测量，主要包括植被高度、覆盖度、植被含水量。\n
\n本数据可为发展和验证主动微波遥感反演土壤水分及冻融状态算法及正向模型提供地面数据集。
", "ds_source": "2007年10月17日夜间，在峨堡样方1和峨堡样方2开展了Envisat ASAR数据的地面同步观测试验。
", "ds_process_way": "与卫星过境同步在每个采样点，采用WET土壤水分速测仪测量土壤体积含水量、土壤电导率、土壤温度及土壤复介电常数实部；采用手持式红外温度计获得地表辐射温度；并用环刀取土经烘干获得重量含水量、土壤容重及体积含水量。同时还对植被参数进行了相关测量，主要包括植被高度、覆盖度、植被含水量。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2007-10-17 00:00:00", "ds_acq_end_time": "2007-10-18 00:00:00", "ds_acq_place": "黑河流域, 峨堡加密观测区, 上游寒区水文试验区", "ds_acq_lon_east": 100.44305555555556, "ds_acq_lat_south": 38.04333333333333, "ds_acq_lon_west": 100.58972222222222, "ds_acq_lat_north": 38.973888888888894, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 38984, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "d0a0412b-1166-4943-8768-0abd71f57537.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "本数据由“黑河综合遥感联合试验”产生，用户在使用数据时请在正文中明确声明数据的来源，并在参考文献部分引用本元数据提供的引用方式。", "ds_from_station": null, "organization_id": "14df1d8b-6362-4c0f-b88e-b46d4abe5db9", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.NIEER.db1805.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-14 16:41:57", "last_updated": "2025-06-30 16:08:37", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1796", "i18n": { "en": { "title": "Heihe River Integrated Remote Sensing joint test: ENVISAT ASAR ground synchronous observation data set in EBAO encrypted observation area during the pre-test period (October 17, 2007)", "ds_format": "excel", "ds_source": "On the night of October 17, 2007, the ground synchronous observation test of ENVISAT ASAR data was carried out in EBU sample 1 and EBU sample 2.", "ds_quality": "
Good data quality
", "ds_ref_way": "", "ds_abstract": "On the night of October 17, 2007, the ground synchronous observation test of ENVISAT ASAR data was carried out in EBU sample 1 and EBU sample 2. ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 23:04bjt. Both EBU sample 1 and EBU sample 2 are 3grid × 3grid, 30m for each grid × 30m square, a total of 25 sampling points (including center point and corner point). Simultaneously with the satellite transit, the wet soil moisture meter is used to measure the real part of soil volume water content, soil conductivity, soil temperature and soil complex dielectric constant at each sampling point; The hand-held infrared thermometer is used to obtain the surface radiation temperature; The soil is taken with a ring knife and dried to obtain the weight water content, soil bulk density and volume water content. At the same time, the vegetation parameters were measured, mainly including vegetation height, coverage and vegetation water content.\n
\nThis data can provide a ground data set for the development and verification of active microwave remote sensing inversion algorithm and forward model of soil moisture and freeze-thaw state.
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, EBO intensive observation area, upstream cold area, hydrological test area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Simultaneously with the satellite transit, the wet soil moisture meter is used to measure the real part of soil volume water content, soil conductivity, soil temperature and soil complex dielectric constant at each sampling point; The hand-held infrared thermometer is used to obtain the surface radiation temperature; The soil is taken with a ring knife and dried to obtain the weight water content, soil bulk density and volume water content. At the same time, the vegetation parameters were measured, mainly including vegetation height, coverage and vegetation water content.", "ds_ref_instruction": "This data is generated by \"Heihe integrated remote sensing joint test\". When using the data, users should clearly state the source of the data in the text and quote the reference method provided by this metadata in the reference part." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "预试验", "环刀", "WET土壤水分速测仪", "ASAR", "土壤温度", "土壤水分", "地表辐射温度", "地面同步观测", "手持式红外温度计" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "峨堡加密观测区", "上游寒区水文试验区" ], "ds_time_tags": [ 2007 ], "ds_contributors": [ { "true_name": "晋锐", "email": "jinrui@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "车涛", "email": "chetao@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "吴月茹", "email": "", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "晋锐", "email": "jinrui@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "晋锐", "email": "jinrui@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "遥感及产品" }