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AWR1843: How to set frequency channels for AWR1843 MRR demo?

Lei
Expert 2050 points
Part Number: AWR1843

To avoid inteferences between closed radar sensor, we are going to use different frequency channel for each radar sensor. Can you please advise which parameters or the API we can use to set the frequency channel in Automotive MRR lab demo?

Kind regards

  • +1
    TI__Guru*** 148304 points

    Hi,

    You can slightly modify the starting frequency in

    labs\lab0007_medium_range_radar\src\common\mrr_config_chirp_design_MRR120.h

    #define PROFILE_MRR_START_FREQ_GHZ          (76.01f)

    Thank you

    Cesar

  • 0 in reply to Cesar
    Expert 2050 points

    Thank you very much. Can I also define the stoping frequency? So by doing that, we can set the different bandwidth for each Radar sensor.

    Kind regards 

  • +1 in reply to Lei
    TI__Guru*** 148304 points

    The stop frequency is determined by the Slope and the

    #define PROFILE_MRR_RAMP_END_TIME_VAL       (6000U)

    #define PROFILE_MRR_FREQ_SLOPE_MHZ_PER_US

    To understand these variable please see in the Radar Interface Control Document

    C:\ti\mmwave_dfp_01_02_06_03\docs\mmWave-Radar-Interface-Control.pdf

    Section 5.5.1 AWR_PROFILE_CONF_SET_SB

    It is also useful to read following appnote to understand the chirp configuration

    www.ti.com/.../swra553a.pdf

    Thank you

    Cesar