 name="l00018"></a><span class="lineno">   18</span><span class="comment">//  as well as on quality of navigation solution of GPS receiver. </span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">//  This quality can be estimated by GDOP and TDOP parameters received </span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">//  in NMEA-0183 message packet from GPS receiver.</span></di