IWR6843ISK-ODS: the distance between antenna and object is not correct

Part Number:IWR6843ISK-ODS

Thanks for your supports.

We are working on IWR6843ISK-ODS EVM board.  the firmware is "ti\\mmwave_industrial_toolbox_3_3_1\labs\lab0025_ods_point_cloud_demo_68xx\prebuilt_binaries\ods_point_cloud_68xx.bin"

the configs is "\mmwave_industrial_toolbox_3_3_1\labs\lab0025_ods_point_cloud_demo_68xx\chirp_configsprofile_iwr6843_ods_3d.cfg"

according to "ods_point_cloud_demo_68xx_user_guide.pdf", Navigate to C:\ti\<mmwave_industrial_toolbox_install_dir>\labs\lab0016_zone_occ_14xx\gui\Click run_zone_occupancy.exe to run the visualizer

can get the x,y,z; we can cacluate the distance is sqrt(x*x+y*y+z*z), but the distance is not correct.

example, in fact, the distance is 2.55m; but the get data is about 2.05m (x=0,z=0,y=2.05m);

example,in fact, the distance is 1.9m; but the get data is about 1.7m ;

could you please help us how to debug this issue?