&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;



        </span>NRr:<span style="">&nbsp;&nbsp; </span>Number of
        receiver ranges.</p>
      <p style="font-family: monospace;" class="MsoPlainText"><span
          style="">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;



        </span>R():<span style="">&nbsp; </span>The receiver ranges
        (km)</p>
      <p style="font-family: monospace;" class="MsoPlainText"><span
          style="">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;



        </