I would like to know the Demorad modulations in more detail to be able to calculate range and velocity resolutions etc.
Can you describe the different modulations and specify each modulation in detail?
The current software for the Demorad supports FMCW radar scheme. The maximum ramping frequency range is 24.0GHz to 24.30GHz. However, due to the frequency regulation, you may want to limit the use for from 24.0GHz to 24.25GHz (250MHz bandwidth), or from 24.05GHz to 24.25GHz (200MHz bandwidth), which is different from area to area. You can always use smaller ramping frequency bandwidth if your system does not require fine range resolution. The applied ramping frequency bandwidth will set your range resolution, and the number of the signal sampling together with the ramping frequency bandwidth will dictate the overall range ambiguity. The velocity resolution depends on the overall sampling time for the whole frame in stake. In fast chirp FMCW mode, the chirp repeating time defines the velocity ambiguity. The default data acquisition time at 1MHz sampling rate is
You can acquire 128 frames of data with 256 samples for each chirp with current memory capability of the Demorad. Moreover, the Demorad provides the sampling rate also at 1.2MHz and 1.8MHz. However, please make sure that the ramp period divided by the sample period is an integer in order to maintain coherent data.
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