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IWR1443BOOST: rang_FFT

kelong zeng
Intellectual 380 points
Part Number: IWR1443BOOST
Other Parts Discussed in Thread: DCA1000EVM

Dear enginner,

I used IWR1443BOOST+DCA1000EVM+ mmwave studio to observe a steel water bottle 0.4 meters away from the radar.

The configuration of frame and chirp is shown as follows:

I captured 8 frames data and used matlab script rawDatareader.m to parse adc_data.bin and got radarCube.mat. Then I conducted an FFT process on the data of the first frame, the first antenna and the first chirp, and got the spectrum graph as shown in the figure below:

Unfortunately, what I got was this messy picture. I followed the TI training course:

https://training.ti.com/sites/default/files/docs/mmwaveSensing-FMCW-offlineviewing_0.pdf

Can you tell me the reason? How can I improve my practice?

  • +1
    TI__Mastermind 36485 points

    HI, there:

    Can you check through post processing plots at the radar studio GUI first?  You can check the range-doppler heatmap or range profile.   The information can be found at mmwave studio user guide section 21.

    By the way, radarCube data is already the 1D FFT output, right?

    Best,

    Zigang