Landsat8_OLI & TIRS遥感影像L1全球数据(USGS)

美国陆地卫星8号(Landsat-8 )于2013年2月11日由美国航空航天局(NASA)发射升空。Landsat-8卫星上携带两个传感器，分别是OLI陆地成像仪(Operational Land Imager)和TIRS热红外传感器(Thermal Infrared Sensor)。 Landsat-8在空间分辨率和光谱特性等方面与Landsat 1-7保持了基本一致，卫星一共有11个波段，波段1-7，9-11的空间分辨率为30米，波段8为15米分辨率的全色波段，卫星每16天可以实现一次全球覆盖。 OLI陆地成像仪有9个波段，成像宽幅为185 x 185km。与Landsat-7上的ETM传感器相比，OLI陆地成像仪做了以下调整：1. Band 5的波段范围调整为0.845–0.885 μm，排除了0.825μm处水汽吸收的影响;2. Band 8全色波段范围较窄，从而可以更好区分植被和非植被区域;3. 新增两个波段。Band 1蓝色波段(0.433–0.453 μm)主要应用于海岸带观测，Band 9短波红外波段(1.360–1.390 μm) 应用于云检测。LandSat-8上携带的TIRS热红外传感器主要用于收集地球两个热区地带的热量流失，目标是了解所观测地带水分消耗。 Landsat8遥感影像数据应用范围很广，包括：研究全球变化、农业、林业、地质、资源管理、地理学、制图、水质、海岸研究等领域。Landsat-8, a U.S. Landsat satellite, was launched on February 11, 2013 by the National Aeronautics and Space Administration (NASA). The Landsat-8 satellite carries two sensors: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). In terms of spatial resolution and spectral characteristics, Landsat-8 remains largely consistent with Landsat 1 to 7. The satellite has a total of 11 bands: the spatial resolutions of Bands 1–7 and 9–11 are 30 meters, while Band 8 is a 15-meter-resolution panchromatic band. The satellite can achieve global coverage once every 16 days. The OLI has 9 bands, with an imaging swath of 185 × 185 km. Compared with the ETM sensor on Landsat-7, the OLI has undergone the following adjustments: 1. The wavelength range of Band 5 has been adjusted to 0.845–0.885 μm, eliminating the impact of water vapor absorption at 0.825 μm; 2. The panchromatic Band 8 has a narrower wavelength range, which enables better distinction between vegetated and non-vegetated areas; 3. Two new bands have been added. Band 1, a blue band (0.433–0.453 μm), is mainly used for coastal zone observation, while Band 9, a shortwave infrared band (1.360–1.390 μm), is applied to cloud detection. The TIRS aboard Landsat-8 is primarily used to collect heat loss data from two thermal zones of the Earth, with the goal of understanding the water consumption of the observed regions. The remote sensing image data of Landsat-8 has a wide range of applications, including global change research, agriculture, forestry, geology, resource management, geography, cartography, water quality research, coastal research and other fields.

搜集汇总

背景与挑战

背景概述

该数据集是Landsat-8卫星的OLI和TIRS传感器获取的L1级全球遥感影像数据，覆盖时间从2013年至2024年，空间分辨率包括30米多光谱波段和15米全色波段，每16天实现全球覆盖。数据由美国地质调查局（USGS）提供，适用于全球变化、农业、林业等多个研究领域，具有长期、高分辨率和多波段的特点。