This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MMWCAS-RF-EVM: After calibration, the signal has spurious peaks

Part Number: MMWCAS-RF-EVM

Hi team,

Here's an issue from the customer may need your help:

1) A 2-m roof was measured as a calibration matrix, and this echo data was processed using cascade_MIMO_antinnaCalib.m after calibration, using cascade_MIMO_signalProcessing.m. The 5 m in cascade_MIMO_antinnaCalib was modified to 2 m at calibration. The result has 7 frames, but only 1 frame is good, as shown in the following figure: 

The results of the other frames are shown in the following figure, there are so many strange glitches, what is the reason for that? 

It should be not related to the calibration matrix, the customer has handled it with invalid calibration matrix calibrrateResults_dummy and the same result was obtained. 

2) What does the green curve in the figure above refer to? 

Could you help check this case? Thanks.

Best Regards,

Cherry