Probe to Relay Satellite Link Budget
The following are the engineering calculations for the power received from the Probe to the Relay Satellite:
Here power and noise is calculated for each stage:
As can be seen, the final SNR achieved is 60.53 dB. This high gain is achieved through the combined use of CDMA and high quality low noise amplifiers. It is important to mention that these amplifiers are power limited and thus a smaller SNR is possible.
Bit Error Rate (BER)
Turbo coding is used throughout the links. As such, the following graph from the textbook (see links page for citation) illustrates the expected BER:
Thus, no errors are expected to be received in this link.
Probe to Relay Satellite - Relay Satellite to Earth