Wednesday, October 22, 2008

DISADVANTAGES

The disadvantage of the lower perigees is that they encounter more atmospheric friction, and unless the satellite has fuel to adjust its orbit, gives it a short lifetime.

The disadvantage to polar orbit is that no one spot on the Earth's surface can be sensed continuously from a satellite in a polar orbit.

The space shuttle avoids polar orbits, because flying through the aurora exposes astronauts to radiation and creates other problems.

No one spot on the Earth's surface can be sensed continuously from a satellite in a polar orbit.

One disadvantage of geostationary satellites is a result of their high altitude

Another disadvantage of geostationary satellites is the incomplete geographical coverage,

The coverage is limited to a particular area.

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