Comments on: Determine the time delay between emission of a pulse and reception of the reflected pulse? http://www.thepulsartriyo.com/pulse/determine-the-time-delay-between-emission-of-a-pulse-and-reception-of-the-reflected-pulse Tue, 13 Jul 2010 04:04:59 -0400 http://wordpress.org/?v=2.8.4 hourly 1 By: Thomas Scherrer http://www.thepulsartriyo.com/pulse/determine-the-time-delay-between-emission-of-a-pulse-and-reception-of-the-reflected-pulse/comment-page-1#comment-2531 Thomas Scherrer Thu, 26 Nov 2009 15:03:59 +0000 http://www.thepulsartriyo.com/pulse/determine-the-time-delay-between-emission-of-a-pulse-and-reception-of-the-reflected-pulse#comment-2531 0.000106s = 106.47ms eh !! the right answer is 106.47uS today cheap electronic counters can measure time delays with 1nS resolution, giving you under 1m resolution ! good luck, Thomas Scherrer OZ2CPU webx.dk <br><b>References : </b><br> 0.000106s = 106.47ms

eh !! the right answer is 106.47uS

today cheap electronic counters can measure time delays with 1nS
resolution, giving you under 1m resolution !

good luck,
Thomas Scherrer
OZ2CPU webx.dk

References :

]]> By: Bill W http://www.thepulsartriyo.com/pulse/determine-the-time-delay-between-emission-of-a-pulse-and-reception-of-the-reflected-pulse/comment-page-1#comment-2530 Bill W Thu, 26 Nov 2009 14:18:59 +0000 http://www.thepulsartriyo.com/pulse/determine-the-time-delay-between-emission-of-a-pulse-and-reception-of-the-reflected-pulse#comment-2530 The speed of light (and all electromagnetic radiation, including microwave radiation) is 300,000 km/s. So you need to find the time for the microwave radiation pulse to be emitted, reach the plane, and return to the receiver at the radar antenna. The total distance is then 2 * 15.97 km = 31.94 km. Time = distance/speed = 31.94 km / 300,000 km/s = 0.000106s = 106.47ms Hope this helps Bill<br><b>References : </b><br> The speed of light (and all electromagnetic radiation, including microwave radiation) is 300,000 km/s.

So you need to find the time for the microwave radiation pulse to be emitted, reach the plane, and return to the receiver at the radar antenna. The total distance is then 2 * 15.97 km = 31.94 km.

Time = distance/speed = 31.94 km / 300,000 km/s = 0.000106s = 106.47ms

Hope this helps
Bill
References :

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