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Xiangyu-Gao / mmWave-radar-signal-processing-and-microDoppler-classification

Codes and template data for paper "Experiments with mmWave Automotive Radar Test-bed"
MIT License
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Contents of .mat files #6

Closed atulpant closed 1 month ago

atulpant commented 2 years ago

Hello Xiangyu-Gao,

I was going through the paper along with the codes. I haven't finished up reading the paper but while going through the data from FMCW I had a question related to it. When I try to view the contents of .mat files I know it is a dictionary with arrays as one of the following values. After looking at those array values it seems they are mixed characters (not specifically integer or float). Example :- [-127.-17.j -63.-13.j -34. +3.j ... -10.-14.j -10. +8.j -26. +2.j] [ 81. +3.j 73. +6.j 69.+25.j ... 4. +5.j 3.+23.j -17.+11.j] [-129.+68.j -73.+43.j -62.+56.j ... 2. +0.j 2.+23.j -16.+18.j]

Keeping in mind you have knowledge about FMCW after working on it, can you explain what is the output format from FMCW and why the array has mixed characters?

Xiangyu-Gao commented 1 year ago

Thanks for reaching out. The data format is the complex number so when you see for example -127.-17.j. It means a complex number with real part -127.000000 and imag part -17.000000. Note that I keep each part as float double format.

Hope this helps.

Xiangyu