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AWR1843BOOST: Custom platform

Marvn Arcangel
Genius 12555 points
Part Number: AWR1843BOOST
Other Parts Discussed in Thread: AWR1843,

Hi Team,

Can you please help with the questions below?

- I want to read that information via another software platform with an application that is designed on my own (Matlab, python, C, ...). How can I do that?

- I have found in the file: Programming Chirp Parameters in TI Radar Devices application.PDF that you mentioned an application ( LRR (225 m as Max unambiguous range)) with its parameters ( see the attachment). It indicates that the total time of acquiring a data frame is approximately 9 ms. My question is: What will be the processing time for one frame of data using the built-in hardware accelerator + DSP on the board?

- If the processing time is more than the time of acquiring the frame of data, will this be considered as not a real-time system? 

Thank you kindly.

Regards,

Marvin

  • 0
    TI__Guru*** 148974 points

    Hi,

    Do you already have an EVM? Were you able to run the mmWave SDK demo?

    What is the information you would like to read?

    Thank you

    Cesar

  • 0 in reply to Cesar
    TI__Genius 12555 points

    Hi Cesar,

    Thank you for waiting. The information they need to obtain from the board is the output data generated by the processing unit, including range, velocity, and angle of arrival of detected targets.

    The EVM is still in queue for purchase.

    Regards,

    Marvin

  • 0 in reply to Marvn Arcangel
    TI__Guru*** 148974 points

    Thank you for the additional information.

    Please take a look at the following picture

    The Frame Period is the Processing time unit.

    There are two main parts in the Frame

    1) Acquisition Time - during this time the ADC data is received for each chirp and the 1D fft is performed for each chirp

    2) Inter Frame Idle Time - during this time 2D FFT, CFAR... processing happens

    Marvn Arcangel said:
    I want to read that information via another software platform with an application that is designed on my own (Matlab, python, C, ...). How can I do that?

    The mmWave SDK demo sends the processed data (x,y,z,velocity) through the UART to a PC. A GUI running on the PC is used to display the data. The standard GUI is based on javascript. However we have an internal Matlab Gui that we can share with you. Let us know when you receive your board.

    Marvn Arcangel said:
    I have found in the file: Programming Chirp Parameters in TI Radar Devices application.PDF that you mentioned an application ( LRR (225 m as Max unambiguous range)) with its parameters ( see the attachment). It indicates that the total time of acquiring a data frame is approximately 9 ms.

    Please note that the examples provided in this document are based on theoretical estimates with special antenna design. In our experience the AWR1843 is used for corner radar applications with max range of around 120-150m.

    With the AWR1843BOOST board we have measured max range detection of about 120m.

    The 9 ms correspond to the Acquisition time below. For processing one would need to add Idle time

    thank you
    Cesar

  • 0 in reply to Cesar
    TI__Genius 12555 points

    Hi Cesar,

    Thank you. Can I share the Matlab GUI to the customer?

    Regards,

    Marvin

  • +1 in reply to Marvn Arcangel
    TI__Guru*** 148974 points

    Hi,

    I will provide you a link

    Thank you

    Cesar

  • 0 in reply to Cesar
    TI__Genius 12555 points

    Hi Cesar,

    I have a follow-up question.

    Cesar said:
    Please note that the examples provided in this document are based on theoretical estimates with special antenna design. In our experience the AWR1843 is used for corner radar applications with max range of around 120-150m.

    What do you mean by using a specific antenna? Are you referring to the one that is already designed on AWR1843BOOST? What would be the consequences of changing the antenna?

    Cesar said:
    The 9 ms correspond to the Acquisition time below. For processing one would need to add Idle time

    what is the maximum and minimum period for inter-idle frame ?

    Thanks again!

  • 0 in reply to Marvn Arcangel
    TI__Guru*** 148974 points

    Hi,

    Marvn Arcangel said:
    What do you mean by using a specific antenna? Are you referring to the one that is already designed on AWR1843BOOST? What would be the consequences of changing the antenna?

    With the boost antenna, the max range would be around 100-120m. With an antenna that has higher gain it would be possible to achieve higher range.

    Marvn Arcangel said:
    what is the maximum and minimum period for inter-idle frame ?

    This will depend on how much processing has to be performed. The processing time depends on the number of chirps and the number of ADC samples.

    The frame period can be as low as 10ms if there are only a few chirps in the frame

    What application are you interested in? What frame rate are you considering?

    thank you

    Cesar