In the MATLAB MIMO program included in the AWR2243 cascade board, the customer uses the third dimension FFT for stationary target imaging, and gets the following figure:
The customer would like to know that in general, it is necessary to add windows when handling FFT, when handling the first 2FFT, Hamm windows is added, but there is no Hamm windows when doing 3FFT. The customer then adds Hamm or blackman windows to the data before the 3FFT, which turns out to be worse, two near targets could not be separated, and the side flap seems to spread more. The customer would like to know the reason. And the following figure shows the results:
The customer also points out that imaging results are good on TI's manuals, but in practice imaging always has a lot of drag on angle. What should be done to deal with this kind of target-centered, angle-oriented loop smear like the following figure?
Best Regards,
Cherry Zhou
