CN0566 Real-time data processing and beamforming control to track targets

Hi HelloQiLin ,

It is certainly possible to improve upon the software examples provided with the phaser - we provide a baseline set of examples to facilitate the exercises in the lab manual, further experimentation and development is up to the user.

GNURadio might be able to help you out here, but you might want to connect the PlutoSDR to a remote host computer, rather than the Raspberry Pi, due to its limited power. Also connect the Raspberry Pi to the remote host via wired Ethernet - the Raspberry Pi's only job then is to control the PLL and beamformers.

Note that the limiting factor for the PlutoSDR's data bandwidth is the USB connection, see:

 Maximum Continuously Receiving Sample Rate of Pluto SDR 

You can also disconnect the Pluto entirely, and use your own SDR - just carefully disconnect the U.FL RX connectors from the phaser board, and connect your device.

-Mark

Best wishes, and thank you very much!
I am now much faster when connected to the computer！ However, there is still one issue that confuses me greatly: when the interval between each acquisition is too short, the amplitude sometimes becomes unstable. Even if I unplug the transmitting antenna, it still happens. Specifically, I set the ramp_time to 300 microseconds, the rest time to 200 microseconds, the sampling rate to 1e6, and for each loop, I send and receive 32 chirps for cyclic acquisition. But I found that sometimes the amplitude of all 32 chirps suddenly becomes very large. This also happens even when the transmitting antenna is unplugged. However, if I add some delay between each loop acquisition, the sudden amplitude increase does not occur. Therefore, it should be caused by the internal hardware, right? But I want to understand why this happens. I look forward to your help in resolving my confusion. Thank you very much!

The following is the result of flickering. When I unplug the transmitting antenna and continuously transmit and receive 32 chirps, flickering occurs randomly, and the amplitude suddenly increases.

Best wishes, and thank you very much!
I am now much faster when connected to the computer！ However, there is still one issue that confuses me greatly: when the interval between each acquisition is too short, the amplitude sometimes becomes unstable. Even if I unplug the transmitting antenna, it still happens. Specifically, I set the ramp_time to 300 microseconds, the rest time to 200 microseconds, the sampling rate to 1e6, and for each loop, I send and receive 32 chirps for cyclic acquisition. But I found that sometimes the amplitude of all 32 chirps suddenly becomes very large. This also happens even when the transmitting antenna is unplugged. However, if I add some delay between each loop acquisition, the sudden amplitude increase does not occur. Therefore, it should be caused by the internal hardware, right? But I want to understand why this happens. I look forward to your help in resolving my confusion. Thank you very much!

The following is the result of flickering. When I unplug the transmitting antenna and continuously transmit and receive 32 chirps, flickering occurs randomly, and the amplitude suddenly increases.