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  1. I just stumbled across another question...: ...

    I just stumbled across another question...:



    If I rearrange the formula it is (calling Max_distance=R_max):
    R_max = (f_Sampling*c*T_chirp)/(4*Bandwidth).
    With f_Sampling=167 kHz (as mentioned...
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    Thank your for your detailed explanation!

    Thank your for your detailed explanation!
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    Distance2Go IF scale understanding

    Hey there,

    in D2G v1.2.0 (Radar_D2G_Doppler_FMCW project in DAVE) there are two IF scale factors defined, one for FMCW range processing and another one for Doppler/speed evaluation.

    In...
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    Yeah thanks, figured that out now with that 44.4 ...

    Yeah thanks, figured that out now with that 44.4

    Sounds bad, hope you get a new connector soon.
  5. Hello murshadi, you said that the sampling...

    Hello murshadi,

    you said that the sampling frequency for FMCW chirps is SamplesPerChirp/ChirpDuration. But why is it DataSize/ChirpDuration in config.h (Doppler_FMCW project, config.h line 72)???...
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    Update: I now realised that the 44.4 is the...

    Update:

    I now realised that the 44.4 is the signal frequency (24 GHz) divided by 1.8 times the speed of light c. So it has to do with the velocity resolution and it has the unit 1/m. The factor...
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    Distance2Go Doppler evaluation

    Hey there,

    I'm using the Distance2Go board with the Doppler and FMCW firmware (Radar_D2G_Doppler_FMCW in DAVE) and in /Algorithm/src/doppler.c line 130 it is said:

    g_doppler_velocity = ...
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    If you want to work with the IQ data then you...

    If you want to work with the IQ data then you need to do FFT and further calculations to get the range to a target. In general, I data is the real part and Q data is the imaginary part.

    You don't...
  9. As far as I know it is set by...

    As far as I know it is set by min_frame_interval_us. This value is calculated in Distance2Go\src\firmware_api.c, function is called 'int32_t radar_get_min_frame_interval(Radar_Handle_t device,...
  10. You can set the minimum frame interval to the...

    You can set the minimum frame interval to the value that is calculated by the formulas you find in DAVE or you read the value in MATLAB.
    E.g. for FMCW mode with 1 chirp per frame and 1500 us chirp...
  11. Hi murshadi, I got some more questions: 1) Is...

    Hi murshadi,

    I got some more questions:
    1) Is it always 1 doppler chirp that is sent per frame within the frame period? So the variable number of chirps only affects the number of FMCW chirps,...
  12. Hey, thank you very much for your answer! 1....

    Hey,
    thank you very much for your answer!

    1. During my measurements in the meantime I noticed that the calculated Doppler speed cannot be assigned to any of the possible 16 targets (target IDs)...
  13. Distance2Go Doppler and FMCW mode (range and speed)

    Hey there,

    I can't figure out how the Distance2Go processes I and Q data to get values for both range and speed within a single (or multiple?) measurement. What I know from theory so far is that...
  14. Hey, sorry for the late respone, but it is...

    Hey,
    sorry for the late respone, but it is working fine. I'm using the fftdata as A.
    I understand that the threshold 10 might be a bit too low but I'm still having a problem that when I set the...
  15. Hello Vaishnav, thank you for your reply, I...

    Hello Vaishnav,

    thank you for your reply, I guess this really helps me!
    Just one question: What is 'A' supposed to be? You are using it for plotting but it is not defined anywhere before?
    I'll...
  16. Distance2Go Evaluate recorded data from RadarGUI

    Hello,

    I'm trying to evaluate data I recorded with the RadarGUI to get the same results as the RadarGUI shows me. I'm working with a Distance2Go Demo Board.
    The D2G board detects two targets and...
  17. I am not using the C interface but by looking at...

    I am not using the C interface but by looking at the sizes it would mean you have 255 I (0-254) and 245 Q (255-499) data which doesn't look correct.
    In the config.h (DAVE) it says 250 is the...
  18. Well I agree that a frame period of 50 ms is...

    Well I agree that a frame period of 50 ms is still too high compared to a chirp duration of 1,5 ms (or max 3 ms)...
    Maybe anyone else has an idea?

    Did you get the information about heat...
  19. Which pin did you use to look at the PLL output?...

    Which pin did you use to look at the PLL output?
    Aren't the 250 ms due to the FRAME_PERIOD_ms (also in config.h)?
  20. OK I found an answer why, it is explained in...

    OK I found an answer why, it is explained in algo_api.h:
  21. Infineon Distance2Go horizontal angle is always zero

    Hey there,

    I am working with the Infineon Distance2Go 24 GHz radar demo kit for ranging, movement and presence detection. I have a question about the horizontal angle which is 42° as mentioned in...
  22. Hey, yes thank you, I found it in the meantime...

    Hey,
    yes thank you, I found it in the meantime :)
  23. MATLAB interface plugin Distance2Go 24 GHz radar demo kit

    Hi,

    I am working with the Infineon Distance2Go 24 GHz radar demo kit for ranging, movement and presence detection (with a XMC 4200 microcontroller and BGT24MTR11 for radar purposes). The board and...
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