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AWR1642BOOST: How to calculate the maximum measurement range of radar?

user5223549
Intellectual 260 points
Part Number: AWR1642BOOST

Hi,

I'm using the AWR1642BOOST and Radar Studio.

According to the default configuration of RadarStudio, the radar measurement range is 25m.

and I've tested a target that can measure at least 24m.

The default configuration:

ADC config Format: Complex2x;

Sample Rate(ksps): 10000;

Slop : 30MHz/us.

According to the formula in document SWRA553->www.ti.com/.../swra553.pdf

In case of complex2x mode, the IF bandwidth is limited to 0.9*(Sample Rate)/2. The maximum of IF bandwidth is 4.5MHz.

Range max =  (IFmax * C)/(2*S)

IFmax -> maximum IF bandwidth supported;

C -> Speed of light;

S -> Solp of the transmitted chirp.

So get the maximum range is 22.5m.

This result contradicts the previous one.

Thank you in advance for your response.

Xian

  • 0
    TI__Mastermind 24955 points
    Where does it say in RadarStudio that the default configuration is designed for 25 meters?

    TI has released our new software tool, mmWave Studio, which can be downloaded here: www.ti.com/.../MMWAVE-STUDIO.

    Please ensure that you are using our latest software tools.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Intellectual 260 points

    Hi,

    Thanks for you response.

    I just tested the mmWave Studio with the default configuration.

    Draw the graph using mmWave Studio -> PostProc as follow:

     

    According to the figure, I can measure the target of 22.853m, which is over 22.5m.

    And in the first graph, the maximum vertical coordinate is 25m.

    Regards,

    Xian

  • 0 in reply to user5223549
    TI__Mastermind 24955 points
    Xian,

    While the MATLAB plot may be configured with the maximum point of 25 meters, this does not imply that the maximum chirp distance is 25 meters.

    Regards,
    Kyle
  • 0 in reply to Kyle Cousino
    Intellectual 260 points
    Kyle，
    According to the second figure,I detected the target of 22.853m, which is over 22..5m.
    And Measured distance is 22.82m by the laser range finder.
    Regards,
    Xian
  • 0 in reply to user5223549
    TI__Mastermind 24955 points
    What is the setup that you are using to obtain these results? Are you conducting these experiments in an anechoic chamber? What kind of objects are you using for detection? Are you using an ideal reflector (i.e. corner reflector)?

    Please keep in mind that the equations you refer to in your original post are theoretical equations and actual implementation can vary. When designed the chirp you want to implement for your target application, TI recommends designing your chirp with a maximum range of at least 10% greater than the maximum distance of the object you are intending to detect.

    Regards,
    Kyle