2012年8月28日，在黑河中上游的祁连观测区域，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。ALS70激光波长为1064nm，多次回波（1,2,3和末次）。
\n祁连地区飞行绝对航高为4800米，地面最高点为3009米，地面最低点为2726米，平均点云密度为1.6点/平方米。通过参数检校、点云自动分类和人工编辑等步骤，最终形成DSM和DEM数据产品。
", "ds_source": "ALS70激光波长为1064nm，多次回波（1,2,3和末次）。
", "ds_process_way": "祁连地区飞行绝对航高为4800米，地面最高点为3009米，地面最低点为2726米，平均点云密度为1.6点/平方米。
\n通过参数检校、点云自动分类和人工编辑等步骤，最终形成DSM和DEM数据产品。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2012-08-28 00:00:00", "ds_acq_end_time": "2012-08-29 00:00:00", "ds_acq_place": "黑河流域", "ds_acq_lon_east": 100.32, "ds_acq_lat_south": 38.059999999999995, "ds_acq_lon_west": 100.27, "ds_acq_lat_north": 38.16, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 1064068550, "ds_files_count": 2, "ds_format": "las,trj", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "13f283e0-5e67-49f9-b9d6-ea0c97e0ed48.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": "2021-08-27 10:19:41", "last_updated": "2025-06-30 16:35:37", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1875", "i18n": { "en": { "title": "Remote sensing experiment of ecological hydrology in Heihe River: raw data of airborne lidar in Qilian", "ds_format": "las,trj", "ds_source": "The als70 laser has a wavelength of 1064nm and multiple echoes (1, 2, 3 and last)
", "ds_quality": "Good data quality
", "ds_ref_way": "", "ds_abstract": "On August 28, 2012, lidar aerial remote sensing flight test was carried out in Qilian observation area in the middle and upper reaches of Heihe River by using Yun 12 aircraft and als70 produced by Leica company. The als70 laser has a wavelength of 1064nm and multiple echoes (1, 2, 3 and last)
\nThe absolute flight altitude in Qilian area is 4800m, the highest point on the ground is 3009m, the lowest point on the ground is 2726m, and the average point cloud density is 1.6 points / m2. Through the steps of parameter calibration, automatic classification of point cloud and manual editing, DSM and DEM data products are finally formed
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The absolute flight altitude in Qilian area is 4800m, the highest point on the ground is 3009m, the lowest point on the ground is 2726m, and the average point cloud density is 1.6 points / m2
\nThrough the steps of parameter calibration, automatic classification of point cloud and manual editing, DSM and DEM data products are finally formed
", "ds_ref_instruction": "\r\nThis data was generated by the \"Heihe Ecological Hydrological Remote Sensing Experiment (HiWATER)\". When using the data, please clearly state the source of the data in the main text and cite the citation provided by this metadata in the reference section." } }, "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", "DSM", "DEM" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "祁连", "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" }