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User:Crecasens

114 bytes added, 09:30, 23 July 2013

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== What is Time domain signal ==

The time domain signal window shows the 2048 samples captured of the IF radar signal on the last measurementeach frame captured.

Y axis represents the signal voltage.

X axis is represents the time in microseconds or also it can be the sample number.

In the picture a measurement using the default a -T 600 modulation over a wall about 3m 2m distance from radar is shown. As we will see later, modulation parameters can be changed. Considering that the time to get 2048 samples with the default modulation is 3,471ms and we can see about 16 periods of the sinusoidal signal this means that the dominant sinus shown below is about 4,609KHz frequency. The frequency of the IF radar signal is proportional to the distance from the radar to the target (in this case the wall).

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== Basic FMCW Radar Theory ==

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Carles Recasens

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