“黑河生态水文遥感试验”以具有高寒与干旱区伴生的鲜明特征的黑河流域为试验区。该流域位于 97.1-102.0°E 和 37.7-42.7°N 之间，是我国第二大内陆河流域，发源于祁连山中段，北至中蒙边境，东与石羊河流域接壤，西与疏勒河流域毗邻，总面积为14.3万km²，2012年8月25日，在黑河上游样带观测区域，利用运12飞机，搭载Leica公司生产的ALS70,开展了lidar航空遥感飞行试验，旨在获取观测区域DEM等数据。
", "ds_source": "雷达型号为 Leica ALS70，系统最大飞行高度为 5000m( AGL) ，最大扫描角 75°，内置数码相机，记录1，2，3 次回波强度，激光波长为1064nm，多次回波（1,2,3和末次）。样带地区飞行绝对航高5200米（地面最低点：2660米，地面最高点：4307米），平均点云密度1点/平方米。
", "ds_process_way": "本数据为原始观测数据，未经人工处理
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2012-08-25 00:00:00", "ds_acq_end_time": "2012-08-26 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 100.63, "ds_acq_lat_south": 37.97, "ds_acq_lon_west": 99.73, "ds_acq_lat_north": 38.330000000000005, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 2445580155, "ds_files_count": 2, "ds_format": "las", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "95e3e3c0-ee75-4f1c-8837-42da65b49622.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "本数据由“黑河生态水文遥感试验（HiWATER）”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": "c94b3578-20da-4346-9de9-c702b6ca8983", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596 ", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2021-08-31 14:50:14", "last_updated": "2025-06-30 16:35:56", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Westdc.2021.813", "i18n": { "en": { "title": "Heihe River eco hydrological remote sensing experiment: Airborne Lidar raw data set of transects in the upper reaches of Heihe River Basin (2012)", "ds_format": "las", "ds_source": "The radar model is Leica als70, the maximum flight altitude of the system is 5000m (AGL), the maximum scanning angle is 75 °, the built-in digital camera records the echo intensity of 1, 2 and 3 times, the laser wavelength is 1064nm, and multiple echoes (1, 2, 3 and the last time). The absolute flight height in the sample area is 5200m (the lowest point on the ground: 2660m, the highest point on the ground: 4307m), and the average point cloud density is 1 point / m2
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "“ Heihe River Ecological hydrological remote sensing experiment \"takes Heihe River basin with the distinctive characteristics of alpine and arid areas as the experimental area. The basin is located between 97.1-102.0 ° E and 37.7-42.7 ° n. It is the second largest inland river basin in China. It originates from the middle section of Qilian Mountain, extends to the border between China and Mongolia in the north, borders Shiyang River Basin in the East and Shule River Basin in the west, with a total area of 143000 km ²， On August 25, 2012, lidar aerial remote sensing flight test was carried out in the transect observation area in the upper reaches of Heihe River by using Yun 12 aircraft and als70 produced by Leica company, in order to obtain DEM and other data in the observation area
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin", "ds_space_res": "", "ds_projection": "", "ds_process_way": "This data is the original observation data without manual processing
", "ds_ref_instruction": "This data is generated by \"Heihe eco hydrological remote sensing experiment (hiwater)\". 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", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "激光雷达", "航空遥感", "DEM" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "上游寒区水文试验区" ], "ds_time_tags": [ 2012 ], "ds_contributors": [ { "true_name": "肖青", "email": "xiaoqing@irsa.ac.cn", "work_for": "中国科学院遥感与数字地球研究所", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "肖青", "email": "xiaoqing@irsa.ac.cn", "work_for": "中国科学院遥感与数字地球研究所", "country": "中国" } ], "ds_managers": [ { "true_name": "肖青", "email": "xiaoqing@irsa.ac.cn", "work_for": "中国科学院遥感与数字地球研究所", "country": "中国" } ], "category": "遥感及产品" }