IWR6843AOP: Need BeamForming information compared to IWR6843ISK

HI, there:

Here are some answers to your questions

• Can you confirm that IWR6843AOP antennas are compatible with BeamForming and BeamSteering and that SDK 3.05.00.04 can let me implement it?

Yes,  at device level, beamforming is supported for IWR6843AOP.  However, SDK OOB demo does not support beamforming for AOP board due to the limitation of the angle estimation module.  

• What detection cone could we obtain through combining 2TX Azimuth? And 3TX at the same time?

We do not have measurement data for this. 

• Is the calculation law described in “Enable TX BeamForming” document modifiable to use with the AOP version, did someone already did this? If you have an example, Python or Matlab script for example, I would really appreciate this.

For AOP board, if you cares about performance for elevation close to zero, then the phase rotation calculation is the same as described in the mentioned document.  But if you desired elevation angle is not zero, you can use the following equation for  phase rotation calculation

phaseTX_rad = 2*pi*(m_ind*sind(azimAngle_desired)*cosd(elevAngle_desired) + n_ind*sind(elevAngle_desired));

Where m_ind is the TX antenna spacing in unit of lambda in azimuth direction; n_ind is the TX antenna spacing in unit of lambda in elevation direction; azimAngle_desired is your desired steering direction in azimuth; and elevAngle_desired is your desired steering direction in elevation. 

If your elevAngle_desired = 0, then it goes back to the same equation as the one given in document. 

• Do you have specific recommendations or warnings into porting my current ISK app (derived from OOB Demo) into an AOP compatible one?

I would recommend you to go through radar studio to get raw data captured and check the performance first before working on your target code.

Best,

Zigang