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IWR6843ISK-ODS: Resolution doesn't make sense

Tom Paraschuk
Prodigy 240 points
Part Number: IWR6843ISK-ODS
Other Parts Discussed in Thread: IWR6843

Hello,

I'm working with the Area Scanner Demo, toolbox 4.2.0. I get an output like this from a person standing: 

After studying the resolution of the IWR6843, this doesn't make sense. The azuthimal and elevation resolution are 28.6 degrees by the formula in the application note, since they each have four virtual antennas spaced by lamba/2. 28.6 degrees resolution is approximately represented by the polar grid in the x,y plane. So how can we have detected points at tighter resolution than the theoretical limit?

  • Former Member
    0 Former Member

    If points can be separated in range or doppler than the angular resolution is not the limit. If the objects are in the same range and doppler bins then the angular resolution comes into play.