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Original question:

IWRL6432AOPEVM: Chirp Configuration of Level Sensing

IWRL6432: Doppler FFT of the level sensing application

chiachih chang
Prodigy 90 points
Part Number: IWRL6432

Tool/software:

Hi Expert,

I am dealing with the level sensing application using IWRL6432. Below are what I have done:

  1. I followed the steps in the level sensing user guide, using the IWRL6432 device.
  2. The prebuilt FW is fine and with the default configuration “high_accuracy_demo_xwrl64xx” the sensor is running well. The results can be shown in the industrial visualizer.

2350.high_accuracy_demo_xwrl64xx.cfg

My purpose is that I would like to increase the snr. Refer to other E2E Q&A, I configure the peak selection of doppler domain rather than non-coherent sum. Below is the result, it seems that the SNR is not increased.  high_accuracy_demo_xwrl64xx_peak.cfg

My questions are:

  1. As menitoned, the peak selection of doppler domain does not help with the increment on SNR in this application, am I right? or I configures the wrong CFG?
  2. Suppose 2D FFT will have higher SNR comaring to 1D FFT since the FFT processing gain will contribute to the increment on SNR. So, if the chirps numbers are increased, I expect that the SNR will also increase. However, I did not see the increment on SNR. Could help explain this situation?

Thanks!

Best regards,

ChiaChih