What Is Landsat 7?
Landsat 7 Is the Seventh Satellite of the Landsat Program. Launched on 15 April 1999, Landsat 7'S Primary Goal Is to Refresh the Global Archive of Satellite...
Landsat 7 is the seventh satellite of the Landsat program. Launched on 15 April 1999, Landsat 7's primary goal is to refresh the global archive of satellite photos, providing up-to-date and cloud-free images.
What does Landsat 7 measure?
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).
How does Landsat 7 work?
The Landsat 7 satellite orbits the the Earth in a sun-synchronous, near-polar orbit, at an altitude of 705 km (438 mi), inclined at 98.2 degrees, and circles the Earth every 99 minutes. The satellite has a 16-day repeat cycle with an equatorial crossing time: 10:00 a.m. +/- 15 minutes.
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