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AWR1843: Know how to configure AWR1843 radar chip in order to generate TX beam and receive reflected RF signal and calculate its angle of arrival and distance of the object from the reflecting surface

ilanchezhian Thingalkodi
Intellectual 350 points
Part Number: AWR1843

Hi Team, 

We are using the AWR1843 radar chip. One of our use cases is to find the ground speed with accuracy +/- 0.1 miles per hour. 

We understood from the datasheet that it has 3 TX and 4 RX antenna. My objective is to generate a RF signal beam via TX antenna and 

measure the received signal via the RX antenna. I would like to know how to accomplish this do you have a sample application.

I would like to interpret the data received via RX antenna, could you suggest documentation regarding this for better understanding. 

  • 0
    TI__Mastermind 19620 points

    Hello.

    The current true ground speed implementation is designed for the xWRLx432 devices, for both 60 and 77 GHz.  However, if your goal is to just be able to send out a chirp from the Tx and receive and interpret the data, you can do this on a variety of levels.  You can perform raw data capture using mmWave Studio, and the process to do that is linked here.  However, if you want the processed data that is outputted from the radar device, you can read this data via UART and see it visualized on the industrial visualizer.  You can flash any demo, such as the out-of-box demo for the xWRx843 devices and read the TLVs from the UART stream as stated in this guide.

    Sincerely,

    Santosh

  • 0 in reply to Santosh Krishnan
    Intellectual 350 points

    Hi Santosh, 

    Thanks for the quick reply. We are having AWR1843 do we have the UART based application for this  device as well,similar to what you have mentioned  [ Application: The current true ground speed implementation is designed for the xWRLx432 devices, for both 60 and 77 GHz. ]

    Another question, The AWR1843 itself having the Cortex RF4 core MCU. Can this be programmed by user. Say for example take the data and send it via CAN I/F to the external world. Do we have sample program in this regard ? 

    Does the DSP core inside AWR1843 has factory programmed or we need to do it from our end. In that case how should we do?

    Also, can the user has provision to configure the various chirp parameters, like MMR mode say for example. Once the system gets turned on will it automatically starts its operation and calculate the data range, velocity, angle of reflected signal from the transmitted signal etc. 

    With Regards

    Ilanchezhian T 

  • 0 in reply to ilanchezhian Thingalkodi
    TI__Mastermind 19620 points

    Hello.

    ilanchezhian Thingalkodi said:
    Thanks for the quick reply. We are having AWR1843 do we have the UART based application for this  device as well,similar to what you have mentioned  [ Application: The current true ground speed implementation is designed for the xWRLx432 devices, for both 60 and 77 GHz. ]

    Currently, this is not available for the AWR1843 devices.  However, the demo does include the algorithm used to compute the velocity and can be applied to AWR1843 out-of-box demo.  However, the implementation may be a bit different due to the differences in the SDK.

    ilanchezhian Thingalkodi said:
    Also, can the user has provision to configure the various chirp parameters, like MMR mode say for example. Once the system gets turned on will it automatically starts its operation and calculate the data range, velocity, angle of reflected signal from the transmitted signal etc. 

    The devices can be configured by the user via a configuration file.  I would recommend going through the out-of-box user guide and getting familiar with how to run a demo on the device.

    ilanchezhian Thingalkodi said:
    Another question, The AWR1843 itself having the Cortex RF4 core MCU. Can this be programmed by user. Say for example take the data and send it via CAN I/F to the external world. Do we have sample program in this regard ? 

    It can be programmed by the user.  You can look at our CAN integration guide for a starting point.

    ilanchezhian Thingalkodi said:
    Does the DSP core inside AWR1843 has factory programmed or we need to do it from our end. In that case how should we do?

    Let me look into this and provide an update by the end of the day tomorrow.

    Sincerely,

    Santosh

  • 0 in reply to Santosh Krishnan
    TI__Mastermind 19620 points

    Hello.

    Santosh Krishnan said:
    Does the DSP core inside AWR1843 has factory programmed or we need to do it from our end. In that case how should we do?

    Do you mean if you have to flash this core with code?  If the project has a DSS application, you will have to flash it with this application code, but I believe no other calibration is required.

    Sincerely,

    Santosh