IWR1843AOP: MRR Beamsteering

Part Number: IWR1843AOP
Other Parts Discussed in Thread: TIDEP-01021, AWR1843

Hello, 

I have some questions about MRR Beamsteering. 

I read the following your document, and I'm planning to use MRR Beamsteering on IWR1843AOP. 

www.ti.com/.../tiduev0.pdf

dev.ti.com/.../node

1) I would like to improve the angle resolution of not only Azimuth but also Elevation of IWR1843AOP. 

 Which has better Angle resolution of Elevation the following case a) and b) on IWR1843AOP's antenna array? 

 Also, please let me know the angle resolution about the following case a) and b). 

    a) Using only MRR Subframes with beamsteering between -60deg to +60deg(20deg step)  (Figure10 of "Beamsteering for Corner Radar Reference Design TIDEP-01021")

    b) Using USRR(TDM-MIMO) (non beamsteering)

2) If setting the chirp and subflame for short range radar, does MRR Subframes with beamsteering improve an angle resolution? 

Please advise. 

Thanks and regards, 

Shoko