Satellite link budget Suppose a satellite receiver consists of a low-noise amplifier with G200 and F1.5, with

Satellite link budget Suppose a satellite receiver consists of a low-noise amplifier with G¼200 and F¼1.5, with subsequent stages having the noise figure 30. The satellite is in

geostationary orbit (r¼40 000 km), the carrier frequency is 7.5GHz, the bandwidth W is 5kHz, Gt¼200, Gr¼100, and the required SNR is 10 (all in absolute units) for 90% of time when the rate of rain fall is 50mm/h and the temperature is 300 K. A rainstorm disturbs 5 km of the transmission path. The standard deviation in the lognormal distribution is 10 dB. Compute the required transmission power.

Transcribed Image Text:

Submarine Submarine A 60 B Figure 3.14 Submarine tracking.