IWR6843AOPEVM: Inaccurate Breath Rate Detection Using IWR6843AOPEVM

Tool/software:

Hi Experts,

I'm currently using the IWR6843AOPEVM to detect breathing rate, but the results are not ideal. The test subject is positioned 0.5 meters from the radar, with an actual breathing rate of approximately 20 BPM. However, the Industrial Visualizer shows the detected rate fluctuating randomly between 8 to 30 BPM.

My setup procedure is as follows:

1. Switch to Flashing mode, and use UniFlash to load the image: vital_signs_tracking_6843AOP_demo.bin

2. Switch to Functional mode, and use Industrial Visualizer to start and send configuration: vital_signs_AOP_2m.cfg
   (I pressed the NRST button when switching modes)

I would like to ask:
Is there anything wrong with my procedure? Or are there any settings I should modify to achieve accurate breathing rate detection?

Thank you!