本数据集针对昆仑山岗日嘎布地区，数据内容为2014年岗日嘎布地区数字高程模型，数据格式为GeoTIFF格式。数据集包含2014年岗日嘎布地区数字高程模型GeoTIFF文件，文件为单波段文件，包含的内容为2014年岗日嘎布地区数字高程模型。采集地区为念青唐古拉山东段岗日嘎布地区。
", "ds_source": "2014年欧空局TanDEM-X和TerraSAR-X姊妹雷达卫星像对数据。
", "ds_process_way": "该DEM的生成采用GAMMA软件进行预处理和干涉测量（以2014年TanDEM-X/TerraSAR-X雷达卫星遥感资料），然后利用《多功能DEM校正器》软件，参考2000年30米分辨率SRTM数据，对其进行反复配准和校正，确保其与该地区其它DEM数据具有统一的高程基准和最小的坐标偏差，并使用ICESat卫星激光测高数据对成果数据进行精度评估。
", "ds_quality": "通过使用搭载TerraSAR-X和TanDEM-X传感器的平台，同时观测，获取地面同一地物目标的复数数据（包括振幅和相位信息），组成干涉对。经过精确配准后对复数图像进行共轭相乘可得到复干涉纹图。利用飞行平台、波束视及基线之间的几何关系，对复干涉纹图中的相位信息进行解缠，从而得到地面高程信息。其垂直方向的绝对精度优于10 m，相对精度在局部坡度角>20%时达到4 m，<20%时精度达到2 m。
", "ds_acq_start_time": "2014-01-01 00:00:00", "ds_acq_end_time": "2014-12-31 00:00:00", "ds_acq_place": "岗日嘎布", "ds_acq_lon_east": 97.10944444444443, "ds_acq_lat_south": 28.912777777777777, "ds_acq_lon_west": 96.38972222222223, "ds_acq_lat_north": 29.522499999999997, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 61498439, "ds_files_count": 3, "ds_format": "TIFF", "ds_space_res": "10.0m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "b3fc2f5e-a94c-47f7-a7a3-b84242fd2ed6.jpg", "ds_thumb_from": 2, "ds_ref_way": "使用申明建议采用如下方式： 2014年岗日嘎布地区数字高程模型数据集来源于科技基础性工作专项“中国西部主要冰川作用中心冰量变化调查（2013FY111400）”。 引用方式建议采用如下方式：郭万钦, 魏俊锋, 吴坤鹏，刘时银, 等.中国科学院西北生态环境资源研究院. 2014年岗日嘎布地区数字高程模型数据集. 2019。郭万钦, 蒋宗立，2014年岗日嘎布地区数字高程模型数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2019，doi：10.12072/DIMaC.0047.2020.db", "paper_ref_way": "", "ds_ref_instruction": "收集数据产权属于原数据所有单位，调查数据产权属于中国科学院西北生态环境资源研究院。数据为Geotif格式，通常的地理信息系统软件、遥感处理软件、图像处理软件均可使用，如ARCGIS,ERDAS IMAGINE, ENVI。", "ds_from_station": "中国西部主要冰川作用中心冰量变化调查", "organization_id": "75b2f6d5-c7ed-438c-b7be-98672c057ed5", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "lihongxing@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-17 17:53:22", "last_updated": "2023-05-16 17:35:31", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.DIMaC.2020.111", "i18n": { "en": { "title": "DEM data set of Gangri Gabu area in 2014", "ds_format": "", "ds_source": "Satellite image pair data of TanDEM-X and TerraSAR-X sister radars of ESA in 2014.
", "ds_quality": "By using the platform equipped with TerraSAR-X and TanDEM-X sensors, the complex data (including amplitude and phase information) of the same ground object are obtained at the same time to form an interference pair. After accurate registration, complex interferograms can be obtained by conjugate multiplication of complex images. Based on the geometric relationship among flight platform, beam view and baseline, the phase information in complex interferogram is unwrapped to obtain the ground elevation information. The absolute accuracy in the vertical direction is better than 10 m, and the relative accuracy is 4 m at & gt; 20% and 2 m at & lt; 20%.
", "ds_ref_way": "\nIt is suggested that the following methods should be adopted in the statement: the data set of DEM in Gangri Gabu area in 2014 is derived from the special project of basic work of science and technology \"ice quantity change survey of major glaciation centers in Western China (2013fy111400)\". The following citation methods are recommended: Guo wanqin, Wei Junfeng, Wu Kunpeng, Liu Shiyin, etc. Northwest Institute of ecological environment and resources, Chinese Academy of Sciences. 2014 Gangri Gabu digital elevation model data set. 2019. Guo wanqin, Jiang Zongli, 2014 digital elevation model data set of Gangri Gabu area, national glacier frozen soil desert scientific data center（ www.ncdc.ac.cn )，2019，doi：10.12072/DIMaC.0047.2020.db", "ds_abstract": "This data set focus on the gangrigab area of Kunlun mountain. The data content is digital elevation model of Gangri Gabu area in 2014, and the data format is GeoTIFF format. The data set contains the GeoTIFF file of 2014 Gangri Gabu digital elevation model, which is a single band file, and contains the 2014 Gangri Gabu digital elevation model. The collection area is Gangri Gabu area in the eastern section of nyainqentanglala.
", "ds_time_res": "", "ds_acq_place": "Gangri Gabu", "ds_space_res": "10.0m", "ds_projection": "", "ds_process_way": "Gamma software is used for preprocessing and interferometry (based on the 2014 TanDEM-X / TerraSAR-X radar satellite remote sensing data), and then the multi-functional DEM corrector software is used to repeatedly register and correct the DEM with reference to the 30 meter resolution SRTM data in 2000, so as to ensure that it has a unified elevation datum and minimum coordinate deviation with other DEM data in the region, and to make sure that it has the same elevation datum and minimum coordinate deviation with other DEM data in the area ICESat satellite laser altimetry data are used to evaluate the accuracy of the results.
", "ds_ref_instruction": "\nThe property right of the collected data belongs to the original data owner, and the property right of the survey data belongs to the Northwest Institute of ecological environment and resources, Chinese Academy of Sciences. The data is in geotif format, which can be used by common GIS software, remote sensing processing software and image processing software, such as ArcGIS, ERDAS image, envi." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "岗日嘎布", "DEM", "雷达干涉" ], "ds_subject_tags": [], "ds_class_tags": [], "ds_locus_tags": [ "岗日嘎布" ], "ds_time_tags": [ 2014 ], "ds_contributors": [ { "true_name": "郭万钦", "email": "guowq@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": "蒋宗立", "email": "jiangzongli@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_meta_authors": [ { "true_name": "吴坤鹏", "email": "wukunpeng2008@lzb.ac.cn", "work_for": "云南大学国际河流与生态安全研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "郭万钦", "email": "guowq@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": "冰川" }