Here we show a simulation for a site where the tides vary by 3 meters. High tide is then approximately 4 meters below the antenna; low tide is 7 meters. The GPS SNR data we would expect to see for these scenarios is also shown.
<a href="//commons.wikimedia.org/wiki/User:Kristinemlarson" title="User:Kristinemlarson">Kristinemlarson</a>
<span class="int-own-work" lang="en">Own work</span>