FORESTRY
REMOTE SENSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Orbit at the same rotational speed as the Earth’s rotation
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Orbits in the high latitude region
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The image obtained is a real time image
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Orbits at an altitude of 35800 km above the earth’s surface.
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Detailed explanation-1: -Necessary conditions for a geostationary satellite: It should revolve in an orbit concentric and coplanar with the equatorial plane of the earth. Thus option 1 is correct. Its direction of rotation is same as that of the earth i.e., from west to east. Thus option 2 is incorrect.
Detailed explanation-2: -Geostationary satellite: The satellite having time period equal to 24 hours is called geostationary satellite. The geostationary satellite revolve in an orbit such that it completes the one revolution with the earth. So time period is equal to the time period of earth. So statement 1 is correct.
Detailed explanation-3: -Geostationary orbit (GEO) This makes satellites in GEO appear to be ‘stationary’ over a fixed position. In order to perfectly match Earth’s rotation, the speed of GEO satellites should be about 3 km per second at an altitude of 35 786 km. This is much farther from Earth’s surface compared to many satellites.