AWR1843AOP: There is no azimuth data for 4Rx/1Tx antenna configuration

I meant detected points results only in range direction.

I realized that I also have a problem with the 2Tx (2Tx works properly in oob). Only if I use 3Tx I get azimuth resolution.

In order to work with awr1843aop, I made the following changes before:

C:\ti\mmwave_industrial_toolbox_4_12_0\labs\common\src\dpu\aoaproc\src\aoa2dprocdsp.c line 809:

    /*Arrange the complex output across virtual antennas in 2D grid based on 1843_AOP ES2 antenna placement*/
    /* Channels are arranged as (because the chirps are sent in this order: TX1, TX2 and TX3)
     *
     * 
     * ch-3   ch-2   ch-1   ch-0
     * ch-7   ch-6   ch-5   ch-4
     * ch-11  ch-10  ch-9   ch-8
     * 
     */
    doa_2D->DOA_2D_storage[0][0]= temp_rearrange[3];
    doa_2D->DOA_2D_storage[0][1]= temp_rearrange[2];
    doa_2D->DOA_2D_storage[0][2]= temp_rearrange[1];
    doa_2D->DOA_2D_storage[0][3]= temp_rearrange[0];
    
    doa_2D->DOA_2D_storage[1][0]= temp_rearrange[7];
    doa_2D->DOA_2D_storage[1][1]= temp_rearrange[6];
    doa_2D->DOA_2D_storage[1][2]= temp_rearrange[5];
    doa_2D->DOA_2D_storage[1][3]= temp_rearrange[4];

    doa_2D->DOA_2D_storage[2][0]= temp_rearrange[11];
    doa_2D->DOA_2D_storage[2][1]= temp_rearrange[10];
    doa_2D->DOA_2D_storage[2][2]= temp_rearrange[9];
    doa_2D->DOA_2D_storage[2][3]= temp_rearrange[8];

    doa_2D->DOA_2D_storage[3][0]= cmplx_zero;
    doa_2D->DOA_2D_storage[3][1]= cmplx_zero;
    doa_2D->DOA_2D_storage[3][2]= cmplx_zero;
    doa_2D->DOA_2D_storage[3][3]= cmplx_zero;

Can these changes cause this problem?

I need dsp version of the aoa2d for 1843aop, please.

Hi Faruk,

Can you please confirm that you are using the OOB demo for the AWR1843AOP without any modifications?

Regards,

Kaushik

Yes there is no modification in oob and obb demo works well. But oob demo use this,

		<!-- Device specific Configuration -->
        <configuration name="aop"  
        compilerBuildOptions="
        -DUSE_2D_AOA_DPU
        -DXWR18XX_AOP_ANTENNA_PATTERN"
        linkerBuildOptions="
        -I${COM_TI_MMWAVE_SDK_INSTALL_DIR}/packages/ti/datapath/dpc/dpu/aoa2dproc/lib 		
        -llibaoa2dproc_hwa_xwr68xx.ae674
        "/>   	

Do you think it makes sense to use the aoa2d_6843_hwa proc for 1843aop?

I need dsp version of the aoa2d and the library says "virtual antenna pattern define is needed with AOA_TYPE_2D" so I made those modifications for our demo, not for oob.

When I use aoaproc_dsp instead of aoa2dproc_dsp this makes the sensor works with 4Rx/1Tx and 4Rx/2Tx configurations. 

This solved the issue but not answering my question. If I want to work with 1843aop and tracker algorithm with it, what AoA dpu should I use?

Hi Faruk,

 I would like for you to answer the following questions:

• Are you using "C:\ti\mmwave_industrial_toolbox_4_12_0\labs\common\src\dpu\aoaproc\src\aoa2dprocdsp.c" for the OOB demo or some application in the industrial toolbox?
• When you are using the visualizer to observe your output, can you confirm what the exact problem is (Empty plots, incorrect points, ...)? I didn't quite get what you mean by detections in range direction only.
• Is it possible to send a csv of the point cloud you are getting after your changes from the visualizer?

Regards,

Kaushik

Hi, 

• I rebuilt the "C:\ti\mmwave_industrial_toolbox_4_12_0\labs\common\src\dpu\aoaproc\src\aoa2dprocdsp.c" for 1843aop device and used the binary for my demo (it includes same process chains of the area scanner).
• I am using area scanner visuliazer. When I use 2Tx/4Rx or 1Tx/4Rx configurations, dynamic points in the point clouds do not have a resolution on the azimuth angle (all points are stacked on the line of the axis which same direction as the range).  
  when I switched to the "libaoaproc_dsp_xwr18xx.ae674" from the "libaoa2dproc_dsp_aop_xwr18xx.ae674" of the prebuild binaries, my problem was resolved.
  
• I don't have a csv file.

Why OoB demo uses "libaoa2dproc_hwa_xwr68xx.ae674"? Is this normal or a mistake?

I need to use dsp version of the dpu, which one I can use?

Hi,

If you are using 1Tx, than you should not use aoa2d because the aoa2d is used when there is azimuth and elevation. With 1 Tx there is no elevation information.

Thank you

Cesar

Hi 

I did not get an answer to my question. I am also using 2Tx/4Rx and 3Tx/4Rx configurations. And you don't have a prebuild aoa library for the awr1843aop.

I edited aoa2d for 1843aop and it works for only 3Tx/4Rx configurations. 

So I switched it with aoa library but it's not working well, detected points output is mirrored. 

I want to use advanced frame config which includes 2D and 3D frames. And I don't know which aoa should I use. 

say nothing like "did you try to use the Out of Box demo?" I said you there is a problem with that demo, too.