ECE :: Satellite Communication
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In synchronous detection of an AM signal
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A typical signal strength received from a geosynchronous communication satellite is of the order of a few
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The expression for satellite link frequencies such as 4/6 GHz denotes that
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Assuming a minimum angle of elevation of 5°, a geosynchronous satellite remains in line-of-sight for __________ percentage of Earth's surface.
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Mark out the WRONG statement.
As compared to FDMA, the demand assignment system TDMA -
APPLE was into orbit on 19 th June 1981 by European Space Agency (ESA) from
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A telephone user while talking to a person via a satellite has to wait for reply for about __________ millisecond.
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Space communication links are being increasingly moved into Ka-band (200-30 GHz) because it
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Which of the following statement regarding link loss for a satellite is wrong?
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Depending on the technique used, digitized television requires a bit rate between __________ millions.
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A.
For fixed antenna, it is inversely proportional to f2
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B.
For fixed frequency, it is inversely proportional to the product of the antenna aperture areas
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C.
For a given satellite operating at a given frequency, it is inversely proportional to
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D.
Loss in down-link is negligible as compared to that in uplink
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