Intersection of two Moving Objects with Latitude/Longitude Coordinates
<p>This issue I can't really solve till now although I read through several articles already - hope somebody can help here.</p>

<p>Facts (know variables):</p>

<ul>
<li>Two moving objects on earth surface, both with current know latitude/longitude coordinates.</li>
<li>The speed of both objects is know as well (in m/s).</li>
<li>The direction (angle) of one object is know.</li>
</ul>

<p>Now I want to calculate the direction (angle) of the second moving object needed to intersect with (hit) the other moving object.</p>

<p>As the distance between the objects is small (in the range of only 5-20 km) and no very high accuracy is needed, it is OK to consider the earth surface as plane.</p>

<p>Therefore I already tried working with this great library:
<a href="http://www.codeproject.com/Articles/990452/Interception-of-Two-Moving-Objects-in-D-Space" rel="nofollow">http://www.codeproject.com/Articles/990452/Interception-of-Two-Moving-Objects-in-D-Space</a></p>

<p>But I don't really get that to work as I don't know how to convert speed in m/s back and forth to latitude/longitude velocity vectors.</p>

<p>To better understand the problem here an example with values:</p>

<ul>
<li>Moving object 1 (runner):

<ul>
<li>Current location: latitude: 38.565, longitude: -98.513</li>
<li>Speed: 100 m/s</li>
<li>Direction: 270°</li>
</ul></li>
<li>Moving object 2 (chaser):

<ul>
<li>Current location: latitude: 38.724, longitude: -98.449</li>
<li>Speed: 150 m/s</li>
<li>Direction: <strong>To be calculated</strong></li>
</ul></li>
</ul>

<p>Any help on that would be highly appreciated, thanks in advance!</p>