Design: Write a Link Budget

sconklin / openrotor

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Design: Write a Link Budget #4

Open Abraxas3d opened 5 years ago

Abraxas3d commented 5 years ago

Write a link budget with the information that we have.

Everything is preliminary, but we have enough to make some design assumptions and to build a worst cast budget and station prototype that should be Lunar Gateway capable.

This document will be dynamic.

Abraxas3d commented 5 years ago

Free space path loss to moon is 224.5dB at 10.45 GHz. 2m dish with 80% efficiency is 46dB gain. 100 Watts transmit power at Gateway. With no other gains or loss that is -128.5 dBm.

Typical received signal power from a GPS satellite is −127.5 dBm