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Original question:

IWR1443BOOST: Is it possible to do 3D modeling with IWR1443?

AWR1443BOOST: Is it possible to get 3D Heatmap with AWR 1443 Boost

Shiwei Fang
Prodigy 80 points
Part Number: AWR1443BOOST
Other Parts Discussed in Thread: AWR1443, AWR1642

Hello,

I have three questions regarding the AWR 1443 EVM.

1. Can we get 3D heat map? Like the Range Azimuth Heat Map in mmWave Demo Visualizer but in 3D?

2. Can the mmWave perform SAR operation?

3. Can the above two be achieved by only the AWR 1443 EVM alone? By just connect to PC through USB cable. 

Thanks so much for the help!

  • 0
    TI__Guru*** 148824 points
    Hi,

    Please check the mmwave sdk demo documentation. It will provide the data output from the sensor.

    SAR operation is not supported

    thank you
    Cesar
  • 0 in reply to Cesar
    Prodigy 80 points
    Hi Cesar,

    Thanks for your reply.

    I read that the demo provides 2D azimuth heat map, and the sdk demo doc only discussed this in xwr16xx html. I'm wondering if I configure xwr14xx to be 3D, will I be getting the 3D heat map? and the data format still follows the same?

    Imag(ant 0, range 0), Real(ant 0, range 0),...,Imag(ant N-1, range 0),Real(ant N-1, range 0)

    The antenna number would be 0 to 11? (3Tx and 4 Rx which gives you 12 virtual antennas.) And seems the cfg only has "rangeAzimuthHeatMap" command. Use this command to enable 3D heat map?

    If the device can produce 3D heat map, what would be the elevation angle resolution? Seems 3D which utilize 3 Tx and 4 Rx can increase azimuth angular resolution to 10 degrees. I'm not sure about elevation.

    Thanks,
    Shiwei
  • 0 in reply to Shiwei Fang
    TI__Mastermind 24955 points
    Shiwei,

    A heat map is by nature 2D since the heat map projects a plane with intensity as the third variable. So you can have two 2D heatmaps, one for azimuth-range, and a second for range-elevation.

    What you are referring to as a 3D heat map is actually the Radar Cube that is described in the mmw demo doxygen. In the AWR1443 mmw demo, the web-based GUI Visualizer switches to a 3D point cloud output that you can see.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Prodigy 80 points

    Hi Kyle, 

    Thanks for the reply! So if I'm going to calculate the x,y,z as the MmwDemo_XYZestimation function in the mmwave demo MSS. Do I get the intensity of that location by just calculate the square root of real^2 and imag^2 of the corresponding bins in the azimuth FFT? Do I need to add the intensity calculated the same way from the elevation FFT? Based on my understanding that the 3D point cloud is just the point where the intensity over a threshold? 

    For a static scene, I only need to care about the zero doppler bin from the Radar Cube right? I tried and seems the full radar cube is too large to transmit over USB under one second which seems to be the longest one can configure using the "frame periodicity in ms" under the "frameCfg". 

    Thanks,

    Shiwei

  • 0 in reply to Shiwei Fang
    TI__Mastermind 24955 points
    Shiwei,

    The dss_data_path.c file has a function called MmwDemo_magnitudeSquared() that can be used to get the intensity.

    Yes for a static scene, you would only need to consider the zero doppler bin. And yes, the full radar cube is too large to transmit over USB since the UART protocol is used. The UART protocol is designed to just send out post processed data.

    TI has a solution, the DCA1000 EVM for capturing raw ADC data and transmitting it out over Ethernet to a host PC, which then can be used for post processing algorithms in MATLAB.

    Regards,
    Kyle
  • 0 in reply to Cesar
    Prodigy 100 points

    Hi Cesar,

    You mean that TI does not provide SAR related support or theoretically can not achieve SAR with AWR1443/1642?

    I am sorry to bother you, I am very concerned about this issue.

    thank you

    eehzux

  • 0 in reply to eehzux
    TI__Mastermind 24955 points
    Eehzux,

    At this point in time, TI does not provide SAR related support. The AWR1443 and AWR1642 are not SAR capable devices.

    Regards,
    Kyle