GATE 2017 CE (CE1) – Question 29

Geomatics Engineering · Photogrammetry: scale, flying height, parallax, camera calibration · 1 mark · Multiple choice

The number of spectral bands in the Enhanced Thematic Mapper sensor on Landsat-7 is

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Correct answer: (C) 8

Explanation

Landsat-7’s Enhanced Thematic Mapper Plus provides eight spectral bands: six reflective multispectral bands, a thermal band and a panchromatic band. Different gain settings for the thermal measurements do not make separate spectral bands. The intended count is eight, C. The source abbreviates the sensor name to Enhanced Thematic Mapper.

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