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The next picture is a graph obtained making use of "Speed/Range" feature of the web radar application demo. It was obtained placing the radar on on a tripod close to a road on one side, with the radar oriented on a 15 to 30 meters field of view, as shown on below pictures:
[[Image:SPEED-RANGE-C_NEWsC NEWs.jpg]]
It can be clearly seen how radar tracks the target from 13 to 31 meters (linear green points) and how the target is slightly increasing the speed from 54 to 56Kmph.<br>
In the next picture several targets were detected in different time intervals:
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[[Image:SPEED-RANGE_multitarget-1.jpg]]<br>
Real measurements of 4 vehicles tracked in range (orange points) and speed (blue points)
The modulation used to make this measurement was:
-T 5000 -l 80 -r<br> -r ===> it means we want to make consecutive measurements without limitation<br> x 3000 -T 5000 ===> we apply a modulation sweep time of 5ms X 75000 -l 80 ===> this is the signal level threshold. If the radar detects a signal over this level it will start making measurements until level returns below this threshold, when the radar will stop taking measurements. Each time it detects a signal over this threshold it will present the results. This parameter is very important in order we obtain only desired signals and not noise that would provide unreadable results. There is not a fixed rule to obtain this threshold value because it depends on a lot of things, mainly of the modulation applied, the environment and the type of measurement, so the best is to make first some trials to adjust this value on an empirical way until the system works properly in your specific application and you obtain readable results.
-x 3000 ===> this is a limitation on the processing range, in order to avoid false measurements due to close objects, closer than 3m.<br>
-X 75000 ===> the same as before but applying for far objects, beyond 75m.
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Note that <u>'''an important thing to consider in this kind of measurements is the correct orientation of the radar'''</u>. This is something you also must empirically optimise for your specific application.
[[Image:SPEED-RANGE_multitarget-2.jpg]] <br>
Measurements obtained orienting the radar to get a wider range, up to 60m<br>