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9 GHz doppler radar [Project]
posted October 9 2013 13:53.34 by spic0m




Basically a Doppler radar is a type of radar which measures speed of objects in front of it. The transmitted signal is mixed with the received frequency in a frequency mixer. If an object moves in front of the radar, the received frequency is slightly changed due to the Doppler effect. When these two frequencies are mixed together you end up with a spectrum which contains the frequency difference of the two signals which is directly related to the speed of the objects in front of the radar.


[Link: dgk electronics]
 
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