Hi! Ti experts!
I have been studying an article of《development and demonstration of MIMO SAR mmwave imaging testbeds》writen by Muhammet Emin Yanik . Can I invite Mr.Yanik to help answer some of my questions? I would appreciate your help.
I'm trying to use RM algorithm and AWR2243 Cascade Radar to realize the dimention of range and azimuth imaging.My questions are as follows:
Is the purpose of "MIMO array calibration" (Fig.1) in part VI mentioned in the peper the same as the calibration (Fig.2,3) described in the cascaded radar user's guide? The two calibrations I understand are different: the MIMO array calibration mentioned in the article is to make the raw data closer to the ideal backscatter model.While the calibration mentioned in the cascaded radar user's guide is to calibrate the inter-channel mismatch?
So in the imaging experiment, do you choose one of them for calibration or both?
Moreover,in your paper, I can't understand the relationship between using antenna coupling calibration and ideal scattering model calibration mentioned. Are these two different calibration methods? One is to use the coupling between the transmitting and receiving antenna elements to calibrate, and the other is to use the least square fitting to estimate the precise position of the target, and then use the ideal backscatter model to extract the calibration signal? and the second method is selected in your open-source Matlab code, is that right?
I look forward to hearing from you!
Yours sincerely,
Weiwei Guo
