Landsat 1-7 The Landsat program is a joint USGS and NASA led enterprise for Earth Observation that represents the world's longest running system of satellites for moderate-resolution optical remote sensing for land, coastal areas and shallow waters. The approximate scene size is 170 km north-south and 183 km east-west (106 mi by 114 mi). Landsat 1 orbited the Earth in a sun-synchronous, near-polar orbit (99.2 degrees inclination) at an altitude of 917 km (570 miles), circling the Earth every 103.34 minutes, completing 14 orbits per day. The Details. The resolution for Band 8 (panchromatic) is 15 meters. All bands can collect one of two gain settings (high or low) for increased radiometric sensitivity and dynamic range, while Band 6 collects both high and low gain for all scenes. Involving three large American governmental organizations: NASA, NOAA and USGS launched on April 15, 1999. The Landsat Thematic Mapper (TM) sensor was carried on Landsat 4 and Landsat 5, and created images consisting of six spectral bands with a spatial resolution of 30 meters for Bands 1-5 and 7, and one thermal band (Band 6). Landsat 1 • Landsat 2 • Landsat 3 • Landsat 4 • Landsat 5 • Landsat 6 • Landsat 7 • Landsat 8. Launch Date: July 23, 1972; Status: expired, January 6, 1978; Sensors: RBV, MSS Altitude: nominally 900 km; Inclination: 99.2° Orbit: polar, sun-synchronous Landsat 7 Enhanced Thematic Mapper Plus (ETM+) images consist of eight spectral bands with a spatial resolution of 30 meters for Bands 1 to 7. Landsat 1 was launched on July 23, 1972; at that time the satellite was known as the Earth Resources Technology Satellite (ERTS).It was the first Earth-observing satellite to be launched with the express intent to study and monitor our planet’s landmasses.

About Landsat 7. Landsat 7 is equipped with ETM+ (Enhanced Thematic Mapper Plus), which provides a ground survey in four modes: VNIR (Visible and Near Infrared), SWIR (Shortwave Infrared), PAN (Panchromatic - Panchromatic range), TIR (Thermal infrared - Thermal infrared range).

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