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Original question:

MMWCAS-RF-EVM: Angular and Elevation resolution

MMWCAS-RF-EVM: Azimuth angular resolution 1.4 degrees or 0.6 degrees

Alexander McInnes
Prodigy 30 points
Part Number: MMWCAS-RF-EVM

Hello,

I am seeking clarification on the azimuth angular resolution of the MMWCAS-RF-EVM, in the TIDUEN5A design document it is stated to be 1.4 deg. however there is this line:

"Using the TI Imaging Radar solution, we can distinguish between static objects 0.6 degrees apart with all antennae placed in single dimension linearly, and reach a 350-m object detecting range(angular resolution is dependent on the antenna configuration and the number of TX/RX antennae)."

Is this incorrect and should the 1.4 deg. value be used instead? 0.6 deg. also seems to make sense as it matches with the equation for angular resolution where: ang res = lambda/(d*N_tx*N_rx*cos(theta))*180/pi

assuming d = lambda/2, N_tx = 12, N_rx = 16, and theta = 0. That said while the spacing between receive sub-arrays is d = lambda/2, the receive arrays are separated by d > lambda/2. Therefore this 0.6 deg. angular resolution might be wrong.

Thanks,

Alex