DTU Satellite Systems and Design Course CubeSat Communication
DTU Satellite Systems and Design Course CubeSat Communication
DTU Satellite Systems and Design Course CubeSat Communication
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Danish Space Research Institute<br />
Danish Small <strong>Satellite</strong> Programme<br />
Problem # 2<br />
Path Loss<br />
Calculate the path loss for the radio link to<br />
the satellite at horizon using the following<br />
frequencies:<br />
f 1 = 145.8 MHz (typical amateur sat. uplink)<br />
f 2 = 2215 MHz (Ørsted downlink)<br />
Path loss formula:<br />
d<br />
Lp = 32.45 + 20 ⋅log⎜<br />
⎟ + 20 ⋅log<br />
1km ⋅<br />
Solution<br />
L p1 = 144.76 dB<br />
L p1 = 168.40 dB<br />
⎛<br />
⎝<br />
FH 2001-08-27 Cubesat_<strong>Communication</strong>.ppt<br />
⎞<br />
⎠<br />
⎛<br />
⎜<br />
⎝<br />
f<br />
1⋅ MHz<br />
⎞<br />
⎟<br />
⎠<br />
h<br />
Re<br />
Ground<br />
Station<br />
d<br />
Slide # 13<br />
Cubesat
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