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AWR1843BOOST: is it possible to configure the beam steering lab to detect objects with a field of view of 180 degrees?

Jairo Gallardo
Expert 1640 points
Part Number: AWR1843BOOST

Hi, I have changed the steering angle according to pages 20 and 21 of user`s guide in the beam steering lab to -90 , 90 degrees with steps of 10 degrees but the results are the same as the original code which have -60 to 60 degrees with steps of 20 degrees, in both scenarios I have to put the obstacle almost in front of the radar to get response, if I move the object outside the yellow elipse the radar misses the objective, I expected that changing the steering angle to -90 to 90 I could detect objects in the remaining space outside the yellow elipse but it does not works, am I doing something wrong?

thanks

  • 0
    TI__Guru*** 148954 points

    Hi,

    The field of view is defined by the antenna. The AWR1843BOOST antenna pattern is described in the EVM UG, Figure 11 and Figure 12

    As you can see in Figure 11 which provides the Azimuth Gain, at +/-90deg the gain is about -18dB compared to 0 deg. There  is not sufficient gain to detect the object at +/-90deg. This is a limitation of the antenna.

    What application are you interested in?

    Thank you

    Cesar

  • 0 in reply to Cesar
    Expert 1640 points

    I would like to modify the beam steering lab code to get some configurations running MRR,LRR and USRR with my own chirps profiles (USRR does not work in the MRR/USRR alternate frames demo (releases notes of lab says that) so this gives extra work to this project, I think), so I start changing the angle and now I am understanding the Cfg_AdvFrameCfgInitParams function, the user´s guide says this is where the chirp is configured, If you have any better idea, info or document useful please share it.

    Thanks

  • 0 in reply to Cesar
    Expert 1640 points

    Hi, would not be -10dB at +/-90deg 81GHz or -6dB in the other frequencies?, why do you say -18dB?

    Thanks

  • 0 in reply to Jairo Gallardo
    TI__Guru*** 148954 points

    -18dB is the delta from the Max value in the graph

    thank you

    Cesar

  • 0 in reply to Cesar
    TI__Guru*** 148954 points

    I will close this thread due to inactivity.

    If there are new questions please start a new thread

    thank you

    Cesar