本数据包括在盈科绿洲与花寨子荒漠加密观测区测量的光谱反射率与BRDF数据集。数据测量从2008年5月20号开始。\n
\n测量仪器与原理：利用ASD（Analytical Sepctral Devices）光谱仪测量了盈科绿洲与花寨子荒漠加密观测区及其观测区典型地物的反射率。 1. 测量基本原理为：R =（DN1/DN0）×R0。式中R0和DN0分别为参考反射灰板的定标光谱反射率和测量所得DN值；DN1为测量目标所得DN值。 \n
\n测量内容：测量样地与数据类型：盈科绿洲玉米地、盈科小麦地、花寨子荒漠玉米地、花寨子荒漠样地1，花寨子荒漠样地2，以及临泽草地加密观测区、扁都口加密观测区等。其中，盈科绿洲玉米地主要测量点，测量对象为玉米冠层光谱、小麦冠层光谱和条带光谱以及若干次玉米叶片组分光谱。在该样地还多次进行了玉米地BRDF的测量。花寨子荒漠样地1与花寨子荒漠样地2多采用条带测量方式，没有真正意义的组分光谱。盈科小麦地与花寨子荒漠玉米地与其他试验区也多为冠层和条带光谱。\n
\n测量仪器：盈科绿洲与花寨子荒漠前后共计4台ASD光谱仪，即北京大学、中国科学院遥感应用研究所、北京农林科学院和北京师范大学各自1台。其中北京大学和中国科学院遥感应用研究所的ASD光谱仪波长为350-2500nm，为主要测量仪器；北京农林科学院的ASD波长为350-1065nm，在试验前期用于卫星或飞行同步光谱在荒漠样地测量。北京师范大学的ASD光谱仪只测量了2008年05月20日花寨子荒漠样地2光谱数据。参考反射率板有40%，50%和99%。前两者为实际测量参考对象，后者主要用于仪器间相互比对。 \n
\n测量日期：2008-05-20， 2008-05-24， 2008-05-25， 2008-05-28， 2008-05-30， 2008-06-01， 2008-06-04， 2008-06-09， 2008-06-14， 2008-06-16， 2008-06-18， 2008-06-20， 2008-06-22， 2008-06-23， 2008-06-24， 2008-06-26， 2008-06-29， 2008-06-30， 2008-07-01， 2008-07-04， 2008-07-05， 2008-07-06， 2008-07-07， 2008-07-09， 2008-07-11。 2008-07-11为光谱仪之间的比对试验， 其中以下日期为北京大学和中国科学院遥感应用研究所的两台仪器在不同样地测量：2008-05-28，2008-06-16，2008-06-23；测量数据配合机载红外广角双模式成像仪WiDAS（Wide-angle Infrared Dual-mode line/area Array Scanner）航空飞行、成像光谱仪OMIS-II航空飞行以及多种星载传感器。\n
\n数据处理：包括原始数据与记录数据、处理后的反射率数据。 原始数据为ASD光谱仪标准格式，可利用其自带软件ViewSpec打开，本分数据集已导出为Excel格式。处理后的反射率数据以Excel格式保存。
", "ds_source": "数据测量从2008年5月20号开始。2008-05-20， 2008-05-24， 2008-05-25， 2008-05-28， 2008-05-30， 2008-06-01， 2008-06-04， 2008-06-09， 2008-06-14， 2008-06-16， 2008-06-18， 2008-06-20， 2008-06-22， 2008-06-23， 2008-06-24， 2008-06-26， 2008-06-29， 2008-06-30， 2008-07-01， 2008-07-04， 2008-07-05， 2008-07-06， 2008-07-07， 2008-07-09， 2008-07-11。 2008-07-11为光谱仪之间的比对试验， 其中以下日期为北京大学和中国科学院遥感应用研究所的两台仪器在不同样地测量：2008-05-28，2008-06-16，2008-06-23；测量数据配合机载红外广角双模式成像仪WiDAS（Wide-angle Infrared Dual-mode line/area Array Scanner）航空飞行、成像光谱仪OMIS-II航空飞行以及多种星载传感器。
", "ds_process_way": "测量仪器与原理：利用ASD（Analytical Sepctral Devices）光谱仪测量了盈科绿洲与花寨子荒漠加密观测区及其观测区典型地物的反射率。 1. 测量基本原理为：R =（DN1/DN0）×R0。式中R0和DN0分别为参考反射灰板的定标光谱反射率和测量所得DN值；DN1为测量目标所得DN值。测量仪器：盈科绿洲与花寨子荒漠前后共计4台ASD光谱仪，即北京大学、中国科学院遥感应用研究所、北京农林科学院和北京师范大学各自1台。其中北京大学和中国科学院遥感应用研究所的ASD光谱仪波长为350-2500nm，为主要测量仪器；北京农林科学院的ASD波长为350-1065nm，在试验前期用于卫星或飞行同步光谱在荒漠样地测量。北京师范大学的ASD光谱仪只测量了2008年05月20日花寨子荒漠样地2光谱数据。参考反射率板有40%，50%和99%。前两者为实际测量参考对象，后者主要用于仪器间相互比对。
", "ds_quality": "数据质量良好
", "ds_acq_start_time": "2008-05-20 00:00:00", "ds_acq_end_time": "2008-07-11 00:00:00", "ds_acq_place": "黑河流域,花寨子荒漠加密观测区,中游干旱区水文试验区,盈科绿洲加密观测区,临泽草地加密观测区,扁都口加密观测区", "ds_acq_lon_east": 101.03611111111111, "ds_acq_lat_south": 38.19194444444444, "ds_acq_lon_west": 100.03694444444444, "ds_acq_lat_north": 39.28611111111111, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 1215467642, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "日", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "2d05db0f-04c5-4c4d-bfbe-a570eee2144f.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.db1773.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-03-14 15:03:18", "last_updated": "2023-08-22 15:12:26", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1733", "i18n": { "en": { "title": "Heihe comprehensive remote sensing joint experiment: spectral reflectance observation data set of Yingke oasis and huazhaizi desert intensive observation area (2008)", "ds_format": "excel", "ds_source": "Data measurement began on May 20, 2008. 2008-05-20， 2008-05-24， 2008-05-25， 2008-05-28， 2008-05-30， 2008-06-01， 2008-06-04， 2008-06-09， 2008-06-14， 2008-06-16， 2008-06-18， 2008-06-20， 2008-06-22， 2008-06-23， 2008-06-24， 2008-06-26， 2008-06-29， 2008-06-30， 2008-07-01， 2008-07-04， 2008-07-05， 2008-07-06， 2008-07-07， 2008-07-09， 2008-07-11。 July 11, 2008 is the comparison test between spectrometers, in which the following dates are measured by two instruments of Peking University and Institute of remote sensing application, Chinese Academy of Sciences: May 28, 2008, June 16, 2008, June 23, 2008; The measured data are matched with airborne infrared wide-angle dual-mode imager widas (wide angle infrared dual-mode line / area array scanner) aviation flight, imaging spectrometer omis-ii aviation flight and a variety of spaceborne sensors.", "ds_quality": "
Good data quality
", "ds_ref_way": "", "ds_abstract": "This data includes spectral reflectance and BRDF data sets measured in Yingke oasis and huazhaizi desert intensive observation area. Data measurement began on May 20, 2008.\n
\nMeasuring instrument and principle: ASD (analytical Sepctral devices) spectrometer was used to measure the reflectivity of Yingke oasis and huazhaizi desert intensive observation area and typical features in the observation area. 1. Basic principle of measurement: r = (DN1 / dn0) × R0。 Where R0 and dn0 are the calibrated spectral reflectance of the reference reflective gray plate and the measured DN value respectively; DN1 is the DN value obtained from the measurement target.\n
\nSurvey content: survey sample plots and data types: Yingke oasis corn plot, Yingke wheat plot, huazhaizi desert corn plot, huazhaizi desert sample plot 1, huazhaizi desert sample plot 2, Linze grassland intensive observation area, biandukou intensive observation area, etc. Among them, the main measuring points of corn field in Yingke oasis are corn canopy spectrum, wheat canopy spectrum, strip spectrum and several times of corn leaf component spectrum. BRDF of corn field was measured many times in this sample plot. Huazhaizi desert sample 1 and huazhaizi desert sample 2 mostly adopt strip measurement, and there is no real component spectrum. Yingke wheat field and huazhaizi desert corn field and other experimental areas are also mostly canopy and band spectra.\n
\n& emsp; Measuring instruments: there are four ASD spectrometers before and after Yingke oasis and huazhaizi desert, i.e. one for Peking University, Institute of remote sensing application, Chinese Academy of Sciences, Beijing Academy of agricultural and Forestry Sciences and Beijing Normal University. The ASD spectrometer of Peking University and Institute of remote sensing applications, Chinese Academy of Sciences, with a wavelength of 350-2500 nm, is the main measuring instrument; The ASD wavelength of Beijing Academy of agricultural and Forestry Sciences is 350-1065nm. In the early stage of the experiment, it is used for satellite or flight synchronous spectrum measurement in desert samples. The ASD spectrometer of Beijing Normal University only measured the spectral data of huazhaizi desert sample 2 on May 20, 2008. The reference reflectance plates are 40%, 50% and 99%. The first two are the actual measurement reference objects, and the latter is mainly used for mutual comparison between instruments.\n
\nMeasurement date: 2008-05-202008-05-242008-05-252008-05-282008-05-302008-06-012008-06-042008-06-092008-06-142008-06-162008-06-182008-06-202008-06-222008-06-232008-06-242008-06-262008-06-292008-06-302008-07-012008-07-042008-07-052008-07-062008-07-072008-07-09, 2008-07-11。 July 11, 2008 is the comparison test between spectrometers, in which the following dates are measured by two instruments of Peking University and Institute of remote sensing application, Chinese Academy of Sciences: May 28, 2008, June 16, 2008, June 23, 2008; The measured data are matched with airborne infrared wide-angle dual-mode imager widas (wide angle infrared dual-mode line / area array scanner) aviation flight, imaging spectrometer omis-ii aviation flight and a variety of spaceborne sensors.\n
\nData processing: including original data, recorded data and processed reflectance data. The original data is in the standard format of ASD spectrometer, which can be opened by its own software viewspec. This sub data set has been exported to excel format. The processed reflectance data is saved in Excel format.
", "ds_time_res": "日", "ds_acq_place": "Heihe River Basin, intensive observation area of huazhaizi desert, hydrological test area of arid area in the middle reaches, intensive observation area of Yingke oasis, intensive observation area of Linze grassland and intensive observation area of biandukou", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Measuring instrument and principle: ASD (analytical Sepctral devices) spectrometer was used to measure the reflectivity of Yingke oasis and huazhaizi desert intensive observation area and typical features in the observation area. 1. Basic principle of measurement: r = (DN1 / dn0) × R0。 Where R0 and dn0 are the calibrated spectral reflectance of the reference reflective gray plate and the measured DN value respectively; DN1 is the DN value obtained from the measurement target. Measuring instruments: there are four ASD spectrometers before and after Yingke oasis and huazhaizi desert, i.e. one for Peking University, Institute of remote sensing application, Chinese Academy of Sciences, Beijing Academy of agricultural and Forestry Sciences and Beijing Normal University. The ASD spectrometer of Peking University and Institute of remote sensing applications, Chinese Academy of Sciences, with a wavelength of 350-2500 nm, is the main measuring instrument; The ASD wavelength of Beijing Academy of agricultural and Forestry Sciences is 350-1065nm. In the early stage of the experiment, it is used for satellite or flight synchronous spectrum measurement in desert samples. The ASD spectrometer of Beijing Normal University only measured the spectral data of huazhaizi desert sample 2 on May 20, 2008. The reference reflectance plates are 40%, 50% and 99%. The first two are the actual measurement reference objects, and the latter is mainly used for mutual comparison between instruments.", "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", "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": [ "红外广角双模式成像仪WiDAS", "ASD光谱仪", "BRDF", "多角度热红外与CCD相机", "反射率", "光谱定标", "条带反射率", "成像光谱仪OMIS-II", "冠层反射率" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "花寨子荒漠加密观测区", "黑河流域", "扁都口加密观测区", "盈科绿洲加密观测区", "临泽草地加密观测区", "中游干旱区水文试验区" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "true_name": "任华忠", "email": "renhuazhong@pku.edu.cn", "work_for": "北京大学遥感与地理信息系统研究所", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "任华忠", "email": "renhuazhong@pku.edu.cn", "work_for": "北京大学遥感与地理信息系统研究所", "country": "中国" } ], "ds_managers": [ { "true_name": "任华忠", "email": "renhuazhong@pku.edu.cn", "work_for": "北京大学遥感与地理信息系统研究所", "country": "中国" } ], "category": "遥感及产品" }