Landsat 3 is the third satellite of the Landsat program. Die wichtigsten Sensorsysteme der Landsat-Missionen waren: Landsat 1-3: RBV (Return Beam Vidicon), MSS (Multi Spectral Scanner), Landsat 4-5: TM (Thematic Mapper), MSS, Landsat … The first satellite of the Landsat program, Landsat 1 (originally designated ERTA-1), took and transmitted over 100,000 photos during its lifetime. The Amundsen Sea segment of the ice sheet has begun a melting process that will result in its loss, possibly within the next few hundred years. The MSS continued to systematically collect images of Earth using four spectral bands. "Landsat 3". [4], Landsat 3 was built by GE Aerospace.
The MSS sensor on Landsat 3 originally had five spectral bands, but one failed shortly after launch. The cameras were structurally isolated from the satellite so that they could maintain their alignment.
A fifth thermal band was also part of the Landsat 3 MSS, however, the channel failed shortly after launch.
[4], Landsat 3 carried a Multispectral Scanner, built by Hughes Aircraft Corporation. Published May 16, 2014. Retrieved March 18, 2014.
Countries that cannot afford their own satellite are able to use the data for ecological preservation efforts and to determine th… Landsat 1-3 use WRS-1, but Landsats 4 and after used WRS-2. Landsat 1-3 use WRS-1, but Landsats 4 and after used WRS-2. [4] It contained two cameras to cover the 0.53 to 0.75 micrometer spectral band. Start Date: Due to the orbit of the satellite, data could be obtained at a minimum of every 12 hours. [4], "Landsat 1–5 Multispectral Scanner (MSS) Image Assessment System (IAS) Radiometric Algorithm Description Document (ADD)", https://en.wikipedia.org/w/index.php?title=Landsat_3&oldid=962092281, Creative Commons Attribution-ShareAlike License, This page was last edited on 12 June 2020, at 01:54. Landsat 3 completed 14 orbits of the Earth daily, and its cycle repeated every 18 days. No data processing or signal multiplexing occurred on the satellite. The cross-track scanning was accomplished by an oscillating mirror; six lines were scanned simultaneously in each of the four spectral bands for each mirror sweep. The first was the data collection platforms (DCPs), which could consist of ocean buoys, constant pressure balloons, or automatic ground stations. Landsat 3 is the third satellite of the Landsat program. [2] Landsat 3 was decommissioned on September 7, 1983. Unlike later Landsat satellites, Landsat 3 was managed solely by NASA.
The satellite was placed in standby mode on March 31, 1983. [5], The spacecraft used an attitude control system (ACS) with freon gas as the propellant. The cameras contained an optical lens, RBV sensor, thermoelectric cooler, deflection and focus coils, a mechanical shutter, and erase lamps.
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