本数据为大满超级站玉米地（测点经纬度：100.372°E，38.855°N；时间：2012-06-29）及机场附近荒漠（测点经纬度：100.700°E，38.762°N；时间：2012-07-08）的BRDF数据集。
测量仪器：中科院遥感所SVC-HR1024光谱仪和参考板、北师大研制多角度自动观测架
测量方式：测量多角度数据以观测平面为单位，即确定观测平面的方位角后，在该平面下以不同的观测天顶角测量地物的光谱。观测平面以平行太阳主平面和垂直太阳主平面观测为主，大满站行播玉米观测了垂直垄和平行垄，荒漠还有正南、正北等平面。每个观测平面，观测天顶角以10°为间隔测量-60°~60°之间的方向反射率。多角度观测架最大测量高度可达5m，利用视场为25°的SVC-HR1024光谱仪观测,光谱范围400nm-2500nm。每个观测平面，先测量参考板的辐射亮度，再将光谱仪探头对准地物，对地物观测按照设定的观测平面每间隔10°天顶角进行观测，观测平面完成后，再对参考板进行测量。由此，完成一次观测平面的测量。
BRDF数据集包括原始数据与记录数据、处理后的BRDF数据。处理后的数据以txt保存，文件中包括角度信息和反射率信息(相对于参考板的反射率)，以及每个平面的三个波长上的BRF随观测角度分布图。
", "ds_source": "本数据为大满超级站玉米地（测点经纬度：100.372°E，38.855°N；时间：2012-06-29）及机场附近荒漠（测点经纬度：100.700°E，38.762°N；时间：2012-07-08）的BRDF数据集。
", "ds_process_way": "测量多角度数据以观测平面为单位，即确定观测平面的方位角后，在该平面下以不同的观测天顶角测量地物的光谱。观测平面以平行太阳主平面和垂直太阳主平面观测为主，大满站行播玉米观测了垂直垄和平行垄，荒漠还有正南、正北等平面。每个观测平面，观测天顶角以10°为间隔测量-60°~60°之间的方向反射率。多角度观测架最大测量高度可达5m，利用视场为25°的SVC-HR1024光谱仪观测,光谱范围400nm-2500nm。每个观测平面，先测量参考板的辐射亮度，再将光谱仪探头对准地物，对地物观测按照设定的观测平面每间隔10°天顶角进行观测，观测平面完成后，再对参考板进行测量。由此，完成一次观测平面的测量。
", "ds_quality": "数据质量良好", "ds_acq_start_time": "2018-11-23 00:00:00", "ds_acq_end_time": "2018-11-24 00:00:00", "ds_acq_place": "黑河流域, 中游人工绿洲试验区, 机场, 大满超级站", "ds_acq_lon_east": 100.37194444444444, "ds_acq_lat_south": 38.855000000000004, "ds_acq_lon_west": 100.37194444444444, "ds_acq_lat_north": 38.855000000000004, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 46051615, "ds_files_count": 5, "ds_format": "txt", "ds_space_res": "/", "ds_time_res": "日", "ds_coordinate": "WGS84", "ds_projection": "/", "ds_thumbnail": "553b9192-cfa1-4a5e-874c-426017d5af4e.png", "ds_thumb_from": 2, "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": "2021-09-14 09:55:44", "last_updated": "2025-06-30 16:34:42", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NIEER.DB2857.2023", "i18n": { "en": { "title": "Heihe River eco hydrological remote sensing experiment: BRDF observation data set in the middle reaches of Heihe River Basin (2018)", "ds_format": "txt", "ds_source": "
This data is the corn field of Daman super station (longitude and latitude of measuring point: 100.372 ° e, 38.855 ° n); Time: June 29, 2012) and desert near the airport (longitude and latitude of measuring point: 100.700 ° e, 38.762 ° n; Date: July 8, 2012)
", "ds_quality": "Good data quality", "ds_ref_way": "", "ds_abstract": "
This data is the corn field of Daman super station (longitude and latitude of measuring point: 100.372 ° e, 38.855 ° n); Time: June 29, 2012) and desert near the airport (longitude and latitude of measuring point: 100.700 ° e, 38.762 ° n; Date: July 8, 2012)
Measuring instrument: svc-hr1024 spectrometer and reference plate of Institute of remote sensing, Chinese Academy of Sciences, multi angle automatic observation frame developed by Beijing Normal University
Measurement method: take the observation plane as the unit for measuring multi angle data, that is, after determining the azimuth of the observation plane, measure the spectrum of ground objects with different observation zenith angles under the plane. The observation plane is mainly parallel to the main plane of the sun and vertical to the main plane of the sun. The vertical ridge and parallel ridge are observed in the row sowing corn of Daman station, and there are due south and due north planes in the desert. For each observation plane, observe the zenith angle and measure the directional reflectance between - 60 ° ~ 60 ° at an interval of 10 °. The maximum measurement height of the multi angle observation frame can reach 5m. The svc-hr1024 spectrometer with a field of view of 25 ° is used for observation, and the spectral range is 400nm-2500nm. For each observation plane, first measure the radiance of the reference plate, then aim the spectrometer probe at the ground object, observe the ground object according to the set observation plane every 10 ° zenith angle, and then measure the reference plate after the observation plane is completed. Thus, a measurement of the observation plane is completed
BRDF data set includes original data, recorded data and processed BRDF data. The processed data is saved in txt. The file includes angle information and reflectivity information (reflectivity relative to the reference plate), as well as BRDF distribution with observation angle at three wavelengths of each plane
", "ds_time_res": "日", "ds_acq_place": "Heihe River Basin, artificial oasis experimental area in the middle reaches, airport, Daman super station", "ds_space_res": "/", "ds_projection": "/", "ds_process_way": "The measurement of multi angle data takes the observation plane as the unit, that is, after determining the azimuth of the observation plane, the spectrum of ground objects is measured at different observation zenith angles under the plane. The observation plane is mainly parallel to the main plane of the sun and vertical to the main plane of the sun. The vertical ridge and parallel ridge are observed in the row sowing corn of Daman station, and there are due south and due north planes in the desert. For each observation plane, observe the zenith angle and measure the directional reflectance between - 60 ° ~ 60 ° at an interval of 10 °. The maximum measurement height of the multi angle observation frame can reach 5m. The svc-hr1024 spectrometer with a field of view of 25 ° is used for observation, and the spectral range is 400nm-2500nm. For each observation plane, first measure the radiance of the reference plate, then aim the spectrometer probe at the ground object, observe the ground object according to the set observation plane every 10 ° zenith angle, and then measure the reference plate after the observation plane is completed. Thus, a measurement of the observation plane is completed
", "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": [ "大气辐射", "反射系数", "光谱仪" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "中游人工绿洲试验区", "机场", "大满超级站" ], "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" }, { "true_name": "马明国", "email": "mmg@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": "马明国", "email": "mmg@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": "马明国", "email": "mmg@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" }