Hi,

I am using a DEMO BGT60TR13C with #MCU7 Baseboard and the Python3 ifxAvian package and am trying to understand the raw data coming from the sensor after acquiring a frame: 

from ifxAvian import Avian

with Avian.Device() as device:

config = Avian.DeviceConfig(

sample_rate_Hz=1_000_000,
rx_mask=1,
tx_mask=1,
if_gain_dB=33,
tx_power_level=31,
start_frequency_Hz=60e9,
end_frequency_Hz=61.5e9,
num_chirps_per_frame=128,
num_samples_per_chirp=64,
chirp_repetition_time_s=0.0005,
frame_repetition_time_s=0.25,
mimo_mode="off",

)
device.set_config(config)

f = device.get_next_frame()
print(f.shape)
print(f)

# (1, 128, 64)
# [[[0.45470086 0.41855922 0.4058608 ... 0.4859585 0.4893773 0.46984127]
# [0.45274726 0.41807082 0.4068376 ... 0.4869353 0.4893773 0.46984127]
# [0.45177045 0.41807082 0.4063492 ... 0.4859585 0.4888889 0.46886447]
# ...
# [0.45347986 0.41855922 0.4056166 ... 0.4888889 0.4903541 0.46837607]
# [0.45250306 0.41807082 0.4043956 ... 0.4884005 0.4908425 0.46837607]
# [0.45372406 0.41855922 0.4058608 ... 0.4884005 0.4901099 0.46788767]]]

I understand that the shape of the array is determined by (rx_antenna_count, num_chirps_per_frame, num_samples_per_chirp).
However I don't understand the individual cell values.
What do the numbers represent? Do they have a unit?

Thanks,

Jannik

Step 6 of getting started with the Distance2GoL board involves an optional firmware update. I am wondering what the purpose of this fimware update is/what (if any) additional functionality it provides? I have been trying to flash the firmware but am having difficulty debugging a J-Link installation issue, so I am wondering if I should just skip the firmware update and continue with developing. 

@Siddharth ,

Hi, 

Thanks for the last reply here https://community.infineon.com/t5/Radar-sensor/BGT60TR13C-data-to-csv-file/m-p/484400#M2822 .  By this code,  the plot should be of 1 frame and 1 antenna. My recorded signal has 128 chirps/frame and 64 samples/chirp.  so in my  .csv file, the columns are 64 and the rows are 128. I am attaching the file here. When I am trying to plot the columns, the plot looks like this: 

 But in the radar gui, the antenna plot shows like this:  

 When I am selecting single column, I can get a single plot but I want to understand how will i be able to get a single antenna plot like this? And, also this IF data is real but i am interested in retrieving the phase information and how would i do that?  I want to understand this system properly. 

Thanks Sddharth. 

Please tell me about the influence of AC fluctuation of the power supply to VCC of BGT24LTR11N16 on the oscillation frequency.
The phenomenon I observed was that when the VCC power supply fluctuated with a 13kHz sine wave at 50mVp-p centered at 3.3V, the oscillation frequency of TX output fluctuated over a width of 10MHz around the set value of 24GHz.
When the variation is small enough (<<10mVp-p), it varies within 1MHz.
(Other conditions)
・V_TUNE has ±1mVp-p variation at 1.5V input.

  The operating power supply specification is within 3.2 to 3.4V.
I have no idea the possible expected value of this phenomenon as a device behavior.
If the behavior is impossible, please let me know if there are other factors.
 Also, if there are any specifications regarding power supply ripple, please let me know.

Hello, I would like to ask for advice: I inserted the radar into the computer and ran the official demo (Python code). This radar transmits the raw data to the computer through USB, and then the computer executes the corresponding algorithm to achieve distance detection?