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Hello,
I’ve been looking at the documentation surrounding the BGT24LTR11 for use as a doppler speed sensor.
in the product application literature it says “suitable for speeds up to 100km/h”. In the datasheet I can’t find a specification for max speed or even IQ bandwidth which I guess is the limiting factor.
If the Doppler formula in the application note is used and the Tx is as low as possible (24.05GHz) and shifted Rx as high as possible (24.25GHz) then it would represent ~1.5 million m/s (assuming I could sample high enough).
I understand that the dev kit might have a lower limit due to baseband filtering and DSP/ADC sampling speed, but not the chip itself.
Is there a limit in the spec that I’m missing or not understanding?
Thanks!
Solved! Go to Solution.
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Radar Sensor
- Tags:
- BGT24LTR11
- doppler
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Hello @InfinityChips,
Please refer to below threads related to similar topic.
https://community.infineon.com/t5/Radar-sensor/Doppler-radar-sensor/td-p/343330
As already mentioned 24 GHz radars are designed and tested for human target (RCS) detection and they are not tested for such high velocities.
Yes you are right that higher sampling frequency enables higher velocity measurement as seen in the application note. Customizing the analog baseband and the firmware enables the measurement of such high velocities, but it is not tested.
Thanks and regards,
George
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Hello @InfinityChips,
Please refer to below threads related to similar topic.
https://community.infineon.com/t5/Radar-sensor/Doppler-radar-sensor/td-p/343330
As already mentioned 24 GHz radars are designed and tested for human target (RCS) detection and they are not tested for such high velocities.
Yes you are right that higher sampling frequency enables higher velocity measurement as seen in the application note. Customizing the analog baseband and the firmware enables the measurement of such high velocities, but it is not tested.
Thanks and regards,
George
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Thank you George. All understood.