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Hello,
I have a question about "Theoretical Max Range" displayed on "Radar Fusion GUI".
I have measured Range under the following condition in Radar Fusion GUI.
Samples per Chirp: 256, Chirps per Frame: 1, Chirp Reptition Time: 506us, Frame rate: 10Hz
Start freq: 58GHz, End freq: 63.5GHz, Sampling BW: 5.5GHz
Tx Power Level: 31, Received IF Gain: 40dB, Cutoff freq of the HPF: 80kHz
Sampling Rate: 1000kHz
"Theoretical Max Range: 3.5m" is displayed below "Samples per Chirp" when I enter the above the condition in Radar Fusion GUI.
I understand Theoretical Max Range is calculated by the follwing formula;
Theoretical Max Range = (Sampling Rate * Speed of light) / (2 * (Sampling BW/Chirp Reptition Time))
Theoretical Max Range is 13.79m using the above formula, not 3.5m.
Please let me know why theose are different.
Please advise.
Regards, Shoko
Solved! Go to Solution.
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Hello @shoko_s ,
Chirp repetition time (in seconds): This is the time period that elapses between the beginnings of two consecutive chirps in a frame. The chirp repetition time is also commonly referred to as pulse repetition time or chirp-to-chirp-time).
Please refer to the SDK documentation (located at: \radar_sdk\doc) for all the explanation regarding the parameters used in Radar Fusion GUI
Hope this helps!
Best Regards,
Honey
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Hi @shoko_s
Please refer to this thread, that would help.
https://community.infineon.com/t5/Radar-sensor/Precisions-about-the-Radar-Fusion-GUI-and-the-BGT60TR...
BR,
Montassar.
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Hello @shoko_s ,
In addition to the above reply, you may also refer to the range calculations as described below:
Hope this helps!
Best Regards,
Honey
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Hello Montassar & Honey,
Thank you so much for your response!
I understand the cailcurate method of max range for Radar Fusion GUI.
I have an additional question about Radar Fusion GUI parametor.
What part of the following image does "Chirp repetition Time" refer to?
I think that it is the period between tx start and tx end per 1Chirp.
Please advise.
Best regards,
Shoko
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Hello @shoko_s ,
Chirp repetition time (in seconds): This is the time period that elapses between the beginnings of two consecutive chirps in a frame. The chirp repetition time is also commonly referred to as pulse repetition time or chirp-to-chirp-time).
Please refer to the SDK documentation (located at: \radar_sdk\doc) for all the explanation regarding the parameters used in Radar Fusion GUI
Hope this helps!
Best Regards,
Honey
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Hello Honey,
Thank you for quick response!
I understand the definition of Chirp repetition time.
Thank you, Shoko