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DCA1000EVM: Seeking Radar Sensor Recommendations & Chirp Continuity Question

Jingqi Jiang
Prodigy 20 points
Part Number: DCA1000EVM
Other Parts Discussed in Thread: AWR1843BOOST

Tool/software:

Hi everyone,

I am currently using DCA1000EVM + AWR1843BOOST for my radar application, but I am wondering if there are other sensor combinations that can better meet my requirements. My key requirements are:

  1. Anti-interference support – The system needs to work in an environment where two or more radars operate simultaneously without significant mutual interference.

Are there any other TI radar sensor options that would be a better fit for these requirements?

Additionally, I have a special requirement regarding chirp transmission:

  • Can my current sensor setup support continuous chirp emission without stopping? Specifically, I want the radar to keep transmitting during the gap between two frames, instead of pausing and waiting for the next frame to start emitting.

Any insights or recommendations would be greatly appreciated! Thanks in advance.

  • 0
    TI__Guru**** 150594 points

    Hi,

    All our solutions using DCA1000 allow to capture ADC data on the PC, then process it offline.

    We don't offer real time solutions that can process the raw data on PC in real time. 

    Thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 20 points

    Thanks, how about the Anti-interference support and continuous chirp emission problems?

  • 0 in reply to Jingqi Jiang
    TI__Guru**** 150594 points

    Our devices support a mode called "Continuous Wave" that can be programmed with mmWave Studio. 

    Anti-interference would need to be implemented in the target code. 

    Some of our target demos, especially 29xx implement it.

    However if raw data is collected,  you would need to implement processing in matlab/python. The anti-interference would need to be implemented as part of that code

    thank you

    Cesar

  • 0 in reply to Cesar
    Prodigy 20 points

    Hi Cesar,

    I think there might be a misunderstanding regarding the continuous model. I still want to use FMCW rather than CW. My goal is to reduce or eliminate the gap time between two frames, making it closer to the gap time between two chirps, as illustrated in the figure.

    Regarding question 2, does this mean that anti-interference should be implemented in the radar signal post-processing algorithm rather than relying on specific hardware features? In other words, does this imply that BPM-MIMO or similar radar types are not required for interference mitigation?

    Thanks,
    jingqi

  • 0 in reply to Jingqi Jiang
    TI__Guru**** 150594 points

    Hi,

    For Question 1, this will not be possible since the firmware uses the interframe time (=gap) to perform some internal calibration, monitoring... If all these features are disabled, than one should be able to reduce the gap. You would need to perform testing.

    For Question 2. Please see following document that explains how we implement interference detection and mitigation as part of the processing

    https://www.ti.com/lit/an/swra725/swra725.pdf

    Thank you

    Cesar