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The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture , cartography , geology , forestry , regional planning , surveillance and education , and can ...
Landsat-7: Active NASA and USGS 1999 Images Earth's land surfaces and coastal areas with global coverage at high spatial resolution. [19] Landsat-8: Active NASA and USGS 2013 Follow on to Landsat-7 with improved imager OLI and thermal sensor TIRS. Landsat-9: Active NASA and USGS 2021 Follow on to Landsat-8 with OLI sensor and thermal sensor TIRS-2.
In 1977, the first real time satellite imagery was acquired by the United States' KH-11 satellite system. The most recent Landsat satellite, Landsat 9, was launched on 27 September 2021. [4] The first television image of Earth from space transmitted by the TIROS-1 weather satellite in 1960.
Amid a changing climate, the data collected provide scientists, city planners, farmers, and other stakeholders with information that can help them make better-informed choices for the future.
The satellite weighs 1973 kg, is 4.04 m long, and 2.74 m in diameter. Unlike its predecessors, Landsat 7 has a solid-state memory of 378 Gbits (roughly 100 images). The main instrument on board Landsat 7 is the Enhanced Thematic Mapper Plus (ETM+), a whisk broom scanner image sensor.
NASA's Landsat 9 satellite captured images of the Palasides Fire burn area, which has a visibly charred stretch from light brown to dark brown to the north and west of the Pacific Palisades community.
The picture is a satellite image of irrigated crops and Kahov irrigation canal. It was captured on 7 August 2015 by Landsat 8 (OLI). The image is created as a True Color Composite, where R – Red Band (0.64 - 0.67 μm), G – Green Band (0.53 - 0.59 μm) and B – Blue Band (0.45 - 0.51 μm). This band combination is suitable for crop monitoring.
It was the first satellite to capture colour images from space and acted significantly as a medium of communications. [1] After the success of TIROS-1 and ATS-3, NASA in conjunction with United States Geological Survey (USGS), progressed forward in Earth observation through a series of Landsat satellites launched