本数据集为L波段机载微波辐射计和红外热像仪传感器于2008年04月1日下午获取，地点在冰沟-阿柔飞行区。其中L波段频率为1.4GHz，后视35度观测，获取双极化（H和V）信息。飞机12:48（北京时间，下同）从张掖机场起飞，16:35降落。13:20-13:58在冰沟摄区工作，观测了8-2、8-6、8-11和8-17四条航线，飞行高度5000m左右，飞行速度260km/hr左右。14:04-15:27完成预定的阿柔10条航线飞行任务，15:33-15:53加飞了6-2、6-3和6-4线，飞行高度4100m左右，飞行速度260km/hr左右。16:12飞过7-9水库定标线，航高100m，但水面结冰，完成观测。\n
\n原始数据分为三部分，分别为微波辐射计数据、红外热像仪数据和GPS数据。其中微波辐射计L波段属非成像观测，由文本文件记录瞬时观测获得的数码值，GPS数据记录飞行时的经纬度以及飞机姿态参数等，热像仪波长范围7.5-13微米，视场角24×18º，320×240像元。\n
\n使用微波辐射计观测数据时需要根据定标系数将记录的数码值转换为亮温值（定标系数文件与原始观测数据归档在一起）。同时，通过微波辐射计和GPS各自的时钟记录，可以将微波观测与GPS记录联系起来，给微波观测匹配地理坐标信息。由于微波辐射计观测分辨率较粗，数据处理中一般忽略飞机的航偏、翻滚以及俯仰效应。根据使用目标及飞行相对航高（H），在定标和坐标匹配后，还可以将观测信息栅格化，L和K波段的分辨率（x）与观测足迹（footprint）可以认为一致，参考分辨率为：L波段，x=0.3H。\n
\n经过以上各步处理后，可以获得用户能够直接使用的产品。红外热像仪数据需要进行几何校正并镶嵌才能使用，但该日热像仪数据不完整且几何变形大，目前还难以使用。", "ds_source": "
原始数据分为三部分，分别为微波辐射计数据、红外热像仪数据和GPS数据。其中微波辐射计L波段属非成像观测，由文本文件记录瞬时观测获得的数码值，GPS数据记录飞行时的经纬度以及飞机姿态参数等，热像仪波长范围7.5-13微米，视场角24×18º，320×240像元。\n
\n使用微波辐射计观测数据时需要根据定标系数将记录的数码值转换为亮温值（定标系数文件与原始观测数据归档在一起）。同时，通过微波辐射计和GPS各自的时钟记录，可以将微波观测与GPS记录联系起来，给微波观测匹配地理坐标信息。由于微波辐射计观测分辨率较粗，数据处理中一般忽略飞机的航偏、翻滚以及俯仰效应。\n
\n根据使用目标及飞行相对航高（H），在定标和坐标匹配后，还可以将观测信息栅格化，L和K波段的分辨率（x）与观测足迹（footprint）可以认为一致，参考分辨率为：L波段，x=0.3H。经过以上各步处理后，可以获得用户能够直接使用的产品。红外热像仪数据需要进行几何校正并镶嵌才能使用，但该日热像仪数据不完整且几何变形大，目前还难以使用。", "ds_process_way": "
其中L波段频率为1.4GHz，后视35度观测，获取双极化（H和V）信息。飞机12:48（北京时间，下同）从张掖机场起飞，16:35降落。13:20-13:58在冰沟摄区工作，观测了8-2、8-6、8-11和8-17四条航线，飞行高度5000m左右，飞行速度260km/hr左右。14:04-15:27完成预定的阿柔10条航线飞行任务，15:33-15:53加飞了6-2、6-3和6-4线，飞行高度4100m左右，飞行速度260km/hr左右。16:12飞过7-9水库定标线，航高100m，但水面结冰，完成观测。", "ds_quality": "
数据质量良好", "ds_acq_start_time": "2018-11-30 00:00:00", "ds_acq_end_time": "2018-11-30 00:00:00", "ds_acq_place": "黑河流域,上游寒区水文试验区,阿柔加密观测区", "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": "apply-access", "ds_total_size": 18289772174, "ds_files_count": 124, "ds_format": "bil", "ds_space_res": null, "ds_time_res": "时", "ds_coordinate": "WGS84", "ds_projection": "", "ds_thumbnail": "8dea2fa0-5796-4cc4-875b-4a49d28ff408.png", "ds_thumb_from": 0, "ds_ref_way": "王树果, 车涛, 肖青，黑河综合遥感联合试验：冰沟-阿柔飞行区L波段机载微波辐射计和红外热像仪数据集（2008年4月1日），国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2019，doi：10.12072/ncdc.NIEER.db1835.2022", "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.db1835.2022", "subject_codes": null, "quality_level": 3, "publish_time": "2022-03-15 15:11:06", "last_updated": "2022-03-15 15:11:06", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.2021.1702", "i18n": { "en": { "title": "Heihe River Integrated Remote Sensing joint test: data set of L-band airborne microwave radiometer and infrared thermal imager in Binggou aquo flight area (April 1, 2008)", "ds_format": "", "ds_source": "
The original data is divided into three parts: microwave radiometer data, infrared thermal imager data and GPS data. The L-band microwave radiometer belongs to non imaging observation. The digital values obtained from instantaneous observation are recorded by text files, and the longitude and latitude during flight and aircraft attitude parameters are recorded by GPS data. The wavelength range of the thermal imager is 7.5-13 microns and the field angle is 24 × 18º，320 × 240 pixels.\n
\nWhen using microwave radiometer observation data, it is necessary to convert the recorded digital value into bright temperature value according to the calibration coefficient (the calibration coefficient file is archived with the original observation data). At the same time, through the respective clock records of microwave radiometer and GPS, microwave observation can be connected with GPS record to match geographic coordinate information for microwave observation. Due to the coarse observation resolution of microwave radiometer, the yaw, roll and pitch effects of aircraft are generally ignored in data processing.\n
\nAccording to the target and flight relative altitude (H), after calibration and coordinate matching, the observation information can also be rasterized. The resolution (x) of L and K bands can be considered consistent with the observation footprint. The reference resolution is L band, x = 0.3H. After the above steps, the products that users can use directly can be obtained. The infrared thermal imager data can only be used after geometric correction and mosaic, but the thermal imager data on that day is incomplete and has large geometric deformation, so it is difficult to use at present.", "ds_quality": "
Good data quality", "ds_ref_way": "", "ds_abstract": "
This data set was acquired by L-band airborne microwave radiometer and infrared thermal imager sensor on the afternoon of April 1, 2008, in Binggou ARJO flight area. The L-band frequency is 1.4GHz, and the back view is 35 degrees to obtain the dual polarization (H and V) information. The plane took off from Zhangye airport at 12:48 (Beijing time, the same below) and landed at 16:35. 13: At 20-13:58, he worked in the Binggou photography area and observed four routes 8-2, 8-6, 8-11 and 8-17. The flight altitude was about 5000m and the flight speed was about 260km / hr. 14: At 04-15:27, the scheduled flight mission of 10 routes in Aru was completed, and lines 6-2, 6-3 and 6-4 were added at 15:33-15:53. The flight altitude was about 4100m and the flight speed was about 260km / hr. 16: 12 flew over the 7-9 reservoir alignment, with a navigation height of 100m, but the water surface was frozen, so the observation was completed.\n
\nThe original data is divided into three parts: microwave radiometer data, infrared thermal imager data and GPS data. The L-band microwave radiometer belongs to non imaging observation. The digital values obtained from instantaneous observation are recorded by text files, and the longitude and latitude during flight and aircraft attitude parameters are recorded by GPS data. The wavelength range of the thermal imager is 7.5-13 microns and the field angle is 24 × 18º，320 × 240 pixels.\n
\nWhen using microwave radiometer observation data, it is necessary to convert the recorded digital value into bright temperature value according to the calibration coefficient (the calibration coefficient file is archived with the original observation data). At the same time, through the respective clock records of microwave radiometer and GPS, microwave observation can be connected with GPS record to match geographic coordinate information for microwave observation. Due to the coarse observation resolution of microwave radiometer, the yaw, roll and pitch effects of aircraft are generally ignored in data processing. According to the target and flight relative altitude (H), after calibration and coordinate matching, the observation information can also be rasterized. The resolution (x) of L and K bands can be considered consistent with the observation footprint. The reference resolution is L band, x = 0.3H.\n
\nAfter the above steps, the products that users can use directly can be obtained. The infrared thermal imager data can only be used after geometric correction and mosaic, but the thermal imager data on that day is incomplete and has large geometric deformation, so it is difficult to use at present.
", "ds_time_res": "时", "ds_acq_place": "Heihe River Basin, upstream cold region, hydrological test area", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The L-band frequency is 1.4GHz, and the back view is 35 degrees to obtain the dual polarization (H and V) information. The plane took off from Zhangye airport at 12:48 (Beijing time, the same below) and landed at 16:35. 13: At 20-13:58, he worked in the Binggou photography area and observed four routes 8-2, 8-6, 8-11 and 8-17. The flight altitude was about 5000m and the flight speed was about 260km / hr. 14: At 04-15:27, the scheduled flight mission of 10 routes in Aru was completed, and lines 6-2, 6-3 and 6-4 were added at 15:33-15:53. The flight altitude was about 4100m and the flight speed was about 260km / hr. 16: 12 flew over the 7-9 reservoir alignment, with a navigation height of 100m, but the water surface was frozen, so the observation was completed.", "ds_ref_instruction": " " } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/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, "belong_to_nieer": false, "ds_topic_tags": [ "大地测量/重力", "差分GPS", "热像仪", "机载", "地面遥感", "微波辐射计" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "黑河流域", "上游寒区水文试验区", "阿柔加密观测区" ], "ds_time_tags": [ 2008 ], "ds_contributors": [ { "true_name": "王树果", "email": "sgwang@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": "车涛", "email": "chetao@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": "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": "王树果", "email": "sgwang@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": "王树果", "email": "sgwang@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" }