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IWR1443: Range resolution for level sensing field transmitter

Nomo
Guru 16800 points
Part Number: IWR1443

Hello,

We're referring the following chirp database of IWR1443.
dev.ti.com/.../node
(100meter Optimized Level Sensing Field Transmitter)

The range resolution is 0.1086m in this lab; however, our target is 0.002 m (2mm) as range resolution.
How can we achieve this requirement?

Best Regards,
Nomo

  • 0
    TI__Guru 50240 points

    Hi Nomo

    It is important to distinguish between "Range Resolution" and "Range Accuracy" as these are two different (but related) concepts.

    Resolution refers to the minimum distance between two objects that is needed by the sensor to distinguish them apart. As of now the minimum range resolution of mmWave Sensors is just under 3 cm.

    Accuracy refers to the error in actual distance compared to what is detected by the sensor. As of now mmWave sensors have seen accuracy to within .1 mm under certain conditions.

    Regards,

    AG

  • 0 in reply to Akash Gondalia
    Guru 16800 points

    Hi Akash-san,

    Thank you for your reply and I had some misunderstandings.
    However, the Range accuracy also shows 0.1085m in the following chirp configuration.
    dev.ti.com/.../node

    We want to achieve the maximum range = 100m and the range accuracy = 2mm simultaneously.
    Is there any ways or settings for this requirement?

    Best Regards,
    Nomo

  • 0 in reply to Nomo
    TI__Guru 50240 points

    Hi Nomo

    The High Accuracy Range Measurement Lab can provide measurements with accuracy to about 1 mm at distances less than 20 meters. The zoom-fft algorithm would need to be altered in order to enable similarly accurate measurements at further distances. The .1085 m accuracy listed in the 100m Level Sensing chirp configuration does not assume the use additional fft processing (i.e. zoom fft).

    Regards,

    AG

  • 0 in reply to Akash Gondalia
    Guru 16800 points

    Hi Akash-san,

    Thank you for your reply.
    And I could understand what you mentioned.

    Best Regards,
    Nomo