Dear TI：
The manual states that when calibrating the AWR2243 four-chip cascade board （AWR2243 DSP-EVM+RF-EVM） MIMO and BF, the corner reflector should be placed in the center of the board （as shown in figure 1,2）.
figure1 figure2
We have some questions about the above instructions:
1）How is the center position (elevation center/azimuth center) defined? Whether it refers to the center of the board?What determines the center position？
2) Is the center position related to the antenna array position?
3）We want to modify the antenna layout according to our own needs, so when recalibrating after modification, does the center point need to be changed?
