Questions about beamsteering in lab0011_mrr_beamsteering

Hi Jitendra, 

Thanks for your answer.

I have another question, I found in this link a script to calculate the value of the phaseshifter in the cfg file but I wonder how this value can affect the detection.

Link  :  e2e.ti.com/.../iwr6843isk-txphaseshifter-values

Is there a demo that uses this parameter because in the OOB demo it sets egual to 0 but it does not use it ? if yes I want to know how to use it.

Regards,

Mohamed

Hi Mohamed,

This MRR beam forming uses Phase shift feature to form a beam at specific angle and further same info is being used during the processing of ADC data to object result.

here is the reference from the source code, (dss_data_path.c)

/* Compensation of Doppler phase shift in the virtual antennas, (correponding
* to second Tx antenna chirps). Symbols corresponding to virtual antennas,
* are rotated by half of the Doppler phase shift measured by Doppler FFT.
* The phase shift read from the table using half of the object
* Doppler index value. If the Doppler index is odd, an extra half
* of the bin phase shift is added. */

Hope this helps.

Regards,

Jitendra