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Phase II Final Report - NASA's Institute for Advanced Concepts

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Chapter 4.0 Entomopter Flight Operations<br />

4.3 Entomopter-borne Active Emitters <strong>for</strong> Navigation and Communication<br />

Peak power (W)<br />

altitude = 10 m<br />

altitude = 200 m<br />

Figure 4-19: Peak Transmitter Power Required <strong>for</strong> Altimetry at 10 m and 200 m<br />

as a Function of Frequency<br />

Average power (W)<br />

1 . 10 4<br />

1 . 10 5<br />

1 . 10 6<br />

1 . 10 7<br />

1 . 10 8<br />

Figure 4-20: Average Transmitter Power Required <strong>for</strong> Altimetry at 10 m and 200 m<br />

as a Function of Frequency<br />

4.3.6.3 Communications Results<br />

10<br />

1<br />

0.1<br />

0.01<br />

1 . 10 3<br />

Peak power at 10 and 200 m<br />

0 20 40 60 80 100<br />

f (GHz)<br />

Average power at 10 and 200 m<br />

1.10 3<br />

1.10 4<br />

1.10 5<br />

1.10 6<br />

1.10 7<br />

1.10 8<br />

1.10 9<br />

1.10 10<br />

1.10 11<br />

1.10 12<br />

1.10 13<br />

1.10 14<br />

1.10 15<br />

0 20 40 60 80 100<br />

f (GHz)<br />

altitude = 10 m<br />

altitude = 200 m<br />

Table 4-3: Parameters <strong>for</strong> Communications Analysis<br />

Temperature of receiver To (Kelvin) 290<br />

Isotropic gain of transmitting antenna G T (dBi) 8<br />

Isotropic gain of receiving antenna G R (dBi) 8<br />

Signal-to-noise ratio (dB) 17.6<br />

Noise figure, F (dB) 2<br />

Bit energy to noise ratio, E b /N o (dB) 15.6<br />

Bit error rate (BER) 10 -5<br />

255

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