本数据集为机载OMIS-II传感器于2008年06月06日获取，地点在临泽站-草地站飞行区。\n
\n因为OMIS-II为扫描成像传感器，原始数据受辐射畸变比较明显，且飞机姿态变化的影响，图像内相邻像元空间位置关系不稳定，所以这里发布的是经过辐射校正，辐射定标和几何粗校正后的数据。辐射校正采用矩匹配（moment match）方法，可以消除辐射响应非均匀性、条带噪声和smile现象。\n
\n辐射定标采用飞行前实验室内测量的定标系数，定标单位是W/(m^2·sr·um)。几何粗校正利用了与图像同步获取的POS数据进行了航带图像的重建，图像目视质量有了很大的提高。\n
\n几何粗校正图像需要利用几何控制点进行几何精校正之后才能与其他带地理坐标的数据配套，这里提供每一条航带的几何控制点，用户可以自己进行几何精校正。作为例子，这里提供临泽站和临泽草地站周边的几何精校正和大气校正图像。另外，因为OMIS-II传感器扫描总视场达到73°，而飞机的窗口较小，所以扫描线左右两端受到机舱的遮挡，虽然经过辐射校正对图像有所恢复，但还是推荐只使用中部未受遮挡的图像。\n
\n未经几何粗校正的OMIS-II原始数据和同步获取的短波红外高光谱（SWPHI）原始数据存档，需提交申请并通过审批后才能获得。几何粗校正处理时间为2008年10月，辐射校正和定标处理时间为2010年1月。", "ds_source": "
2008年6月6日，在临泽草地加密观测区开展了成像光谱仪OMIS-II航空飞行试验。地面同步观测变量主要为地表温度。本数据可为机载－星载遥感数据的地表温度反演和验证提供基本的数据集。", "ds_process_way": "
几何粗校正处理时间为2008年10月，辐射校正和定标处理时间为2010年1月。", "ds_quality": "
本数据集经过辐射校正，辐射定标和几何粗校正后，数据质量良好。", "ds_acq_start_time": "2008-06-06 00:00:00", "ds_acq_end_time": "2008-06-06 00:00:00", "ds_acq_place": "黑河流域,中游干旱区水文试验区,临泽草地飞行观测区", "ds_acq_lon_east": 100.44305555555556, "ds_acq_lat_south": 38.04333333333333, "ds_acq_lon_west": 100.58972222222222, "ds_acq_lat_north": 38.973888888888894, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 12528160232, "ds_files_count": 68, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "ae6bf17a-5cd0-4a1f-be49-e8ce03711c52.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.db1730.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2021-09-14 09:58:28", "last_updated": "2023-09-04 17:54:44", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.14", "i18n": { "en": { "title": "Heihe integrated remote sensing joint test: omis-ii data set of airborne imaging spectrometer in flight area of Linze station Linze grassland station (June 6, 2008)", "ds_format": "Excel", "ds_source": "
On June 6, 2008, the aerial flight test of imaging spectrometer omis-ii was carried out in Linze grassland intensive observation area. The main variable of ground synchronous observation is surface temperature. This data can provide a basic data set for surface temperature inversion and verification of airborne satellite remote sensing data.", "ds_quality": "
After radiometric correction, radiometric calibration and geometric coarse correction, the data quality of this data set is good.", "ds_ref_way": "", "ds_abstract": "
This data set was acquired by the airborne omis-ii sensor on June 6, 2008, in the flight area of Linze station caochao station.\n
\nBecause omis-ii is a scanning imaging sensor, the original data is obviously affected by radiation distortion and the change of aircraft attitude, and the spatial position relationship of adjacent pixels in the image is unstable, so the data released here is the data after radiation correction, radiation calibration and geometric coarse correction. The radiation correction adopts the moment match method, which can eliminate the non-uniformity of radiation response, strip noise and smile phenomenon.\n
\nRadiometric calibration adopts the calibration coefficient measured in the laboratory before flight, and the calibration unit is w / (m ^ 2 · SR · UM). Geometric coarse correction uses POS data obtained synchronously with the image to reconstruct the aerial belt image, and the visual quality of the image has been greatly improved.\n
\nThe geometric coarse correction image can only be matched with other data with geographical coordinates after geometric fine correction by using geometric control points. The geometric control points of each navigation belt are provided here, and the user can carry out geometric fine correction by himself. As an example, the geometric fine correction and atmospheric correction images around Linze station and Linze grassland station are provided here. In addition, because the total scanning field of view of omis-ii sensor reaches 73 ° and the window of the aircraft is small, the left and right ends of the scanning line are blocked by the cabin. Although the image is restored after radiation correction, it is recommended to only use the image in the middle that is not blocked.\n
\nThe omis-ii original data without geometric coarse correction and the synchronously obtained short wave infrared hyperspectral (swphi) original data shall be archived, which can be obtained only after the application is submitted and approved. The processing time of geometric rough correction is October 2008, and the processing time of radiation correction and calibration is January 2010.
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, arid area in the middle reaches, hydrological experimental area, Linze grassland flight observation area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The processing time of geometric rough correction is October 2008, and the processing time of radiation correction and calibration is January 2010.", "ds_ref_instruction": "This data was generated by the \"Heihe Comprehensive Remote Sensing Joint Experiment\". 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": [ "手持式红外温度计", "地面同步观测", "成像光谱仪OMIS-II", "地表辐射温度" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "中游干旱区水文试验区", "黑河流域", "临泽草地飞行区" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "true_name": "李新", "email": "lixin@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": "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" }