Landsat8是美国陆地卫星计划（Landsat）的第八颗卫星，于2013年2月11号在加利福尼亚范登堡空军基地由Atlas-V火箭搭载发射成功，最初称为“陆地卫星数据连续性任务”（Landsat Data Continuity Mission，LDCM）。Landsat8上携带陆地成像仪（Operational Land Imager ，OLI）和热红外传感器（Thermal Infrared Sensor，TIRS）。\n
Landsat9是美国陆地卫星计划（Landsat）的第九颗卫星，2021年9月27日，Landsat9从加利福尼亚范登堡太空部队基地成功发射。Landsat 9将每隔16天对地球进行一次成像，与Landsat8存在8天的偏移。\n
OLI陆地成像仪包括9个波段，空间分辨率为30米，其中包括一个15米的全色波段，成像宽幅为185x185km。热红外传感器TIRS包括2个单独的热红外波段，分辨率100米。 本数据集包含中巴经济走廊（喀什至伊斯兰堡段）Landsat OLI的C2-L1级数据产品,数据均来源于美国地质调查局网站。\n
该数据产品空间分辨率为30m，云量小于20%。", "ds_source": "
数据均来源于美国地质调查局网站（https://earthexplorer.usgs.gov/)。", "ds_process_way": "
L1级数据产品只是通过几何校正过的数据。相对于Collection1 Level1的数据，采用了新的地面控制点GCPS phase2，GCPS phase2融合的是landsat8和sentinel-2两者的控制点。Collection2 Level1数据提高了几何校正和辐射定标的精度。特别是几何校正的精度很大的改善。", "ds_quality": "
云量小于20%，数据质量良好。", "ds_acq_start_time": "2013-01-01 00:00:00", "ds_acq_end_time": "2022-06-01 00:00:00", "ds_acq_place": "中巴经济走廊（喀什至伊斯兰堡段）", "ds_acq_lon_east": 79.56416666666667, "ds_acq_lat_south": 31.241944444444446, "ds_acq_lon_west": 69.96138888888889, "ds_acq_lat_north": 41.41972222222222, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "open-access", "ds_total_size": 1753933107572, "ds_files_count": 1321, "ds_format": "tif", "ds_space_res": "30m", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "UTM", "ds_thumbnail": "dc283cdf-c9bf-4175-8761-feb02ecbec1c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "52b7b79b-860c-49a5-9083-9a70cf8bed5a", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.NIEER.db2350.2022", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2022-07-17 22:28:15", "last_updated": "2025-04-23 09:55:45", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.NIEER.db2350.2022", "i18n": { "en": { "title": "China-Pakistan Economic Corridor (Kashgar to Islamabad Section) Landsat OLI/TIRS Remote Sensing Image Dataset (June 2013-2022)", "ds_format": "Raster", "ds_source": "
All data were obtained from the official United States Geological Survey (USGS) EarthExplorer platform (https://earthexplorer.usgs.gov/).", "ds_quality": "
The dataset contains only scenes with cloud cover below 20%, ensuring excellent data quality for analysis.", "ds_ref_way": "", "ds_abstract": "
Landsat 8 is the eighth satellite in the U.S. Landsat Program, successfully launched aboard an Atlas-V rocket from Vandenberg Air Force Base, California on February 11, 2013. Originally designated as the Landsat Data Continuity Mission (LDCM), the satellite carries two primary instruments: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS).\n
Landsat 9 is the ninth satellite in the U.S. Landsat Program. On September 27, 2021, Landsat 9 was successfully launched from Vandenberg Space Force Base in California. The satellite will conduct Earth imaging every 16 days, operating with an 8-day temporal offset from Landsat 8 to enhance observational coverage.\n
The Operational Land Imager (OLI) onboard the satellite acquires data in 9 spectral bands with a spatial resolution of 30 meters, including one 15-meter panchromatic band, and provides a swath width of 185×185 km. The Thermal Infrared Sensor (TIRS) collects data in 2 separate thermal infrared bands at 100-meter resolution.This dataset comprises Collection 2 Level-1 (C2-L1) data products from Landsat OLI covering the China-Pakistan Economic Corridor section between Kashgar and Islamabad. All data were obtained from the official United States Geological Survey (USGS) website.\n
This dataset features a spatial resolution of 30 meters with cloud coverage limited to less than 20% per scene.
", "ds_time_res": "", "ds_acq_place": "China-Pakistan Economic Corridor (CPEC) - Kashgar to Islamabad Section", "ds_space_res": "30m", "ds_projection": "UTM", "ds_process_way": "The Level-1 (L1) data products have undergone geometric correction processing. Compared to Collection 1 Level-1 data, Collection 2 Level-1 incorporates next-generation ground control points (GCPs Phase 2), which integrate control points from both Landsat 8 and Sentinel-2 satellites. This next-generation Collection 2 Level-1 dataset demonstrates significant improvements in both geometric rectification and radiometric calibration accuracy, with particularly notable enhancements in geometric correction precision.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "ds_topic_tags": [ "遥感影像", "TIRS", "OLI", "Landsat8", "Landsat9" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "中巴经济走廊（喀什至伊斯兰堡段）" ], "ds_time_tags": [ 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 ], "ds_contributors": [ { "true_name": "张耀南", "email": "yaonan@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": "李红星", "email": "lihongxing@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": "敏玉芳", "email": "myf@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" }